2.2 Chemistry Plus

576 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES JUST 01. wb‡¤œi †Kvb weKvi‡Ki gva¨‡g m¤ú„„³ nvB‡WªvKve©b Ges Am¤ú„³ nvB‡WªvKve©‡bi g‡a¨ cv_©K¨ Kiv hvq? [JUST. 2015-16] A. AgNO3 + NH4OH B. CuSO4 + NaOH C. Br2/H2O D. Br2 M¨vm mwVK DËi: C. Br2/H2O MBSTU 01. cvi A·vB‡Wi Dcw¯
wZ‡Z †cÖvwc‡bi mv‡_ HBr Gi ms‡hvRb wewµqvi g~j Drcv` †KvbwU? [BSMRSTU-H. 2019-20] A. 1-†eªv‡gv‡cÖv‡cb B. 2-†eªv‡gv‡cÖv‡cb C. DfqB D. †KvbwUB bq mwVK DËi: A. 1-†eªv‡gv‡cÖv‡cb e¨vL¨v: cvi A·vB‡Wi cÖfv‡e gvK©wbK‡fi bxwZ Lviv‡mi bxwZ bv‡g cwiwPZH2O2 CH3CH2CH2Br (99%) CH3CH(Br)CH3 (1%) CH3CH = CH2 + HBr 02. 2CH3CH = CH2 + 2HBr ROOR ––––– A(99%); A †h․MwU wK? [MBSTU-A. 2019-20] A. CH3CH2CH2Br B. CH3CH(Br)CH2 C. CH3CH(Br)CH2Br D. CH3C(Br) = CH2Br mwVK DËi: A. CH3CH2CH2Br e¨vL¨v: CH3CH2CH2Br (99%) CH3CH(Br)CH3(1%) 2CH3CH= CH2+2HBr ROOR 03. †eªvwgb `ªe‡Yi mvnv‡h¨ †Kvb †h․MwU kbv³ Kiv hvq? [MBSTU-A1.17-18] A. CH3CHO B. CH3COCH3 C. CH3OCH3 D. CH2 = CH2 mwVK DËi: D. CH2 = CH2 e¨vL¨v: ‣Re †h․‡Mi Am¤ú„³Zv wbY©q cixÿv (i) Br2 `ªeY cixÿv (ii) †eqvi cixÿv| 04. ÿvixq KMnO4 `ªe‡Yi mvnv‡h¨ wb‡Pi †Kvb †h․MwU kYv³ Kiv hvq? [MBSTU-B1.2017-18, 2016-17; CU.2008-09, 2010-11] A. CH3COCH3 B. CH3OCH3 C. CH2 = CH2 D. C2H5OC2H5 mwVK DËi: C. CH2 = CH2 e¨vL¨v: ÿvixq KMnO4 Øviv Am¤ú„³ •Re †h․M kbv³ Kiv hvq| BSMRSTU 01. wb‡Pi †Kvb †h․MwU‡K KMnO4 Øviv kbv³ Kiv hvq? [BSMRSTU-H.2017-18 CVASU:2018-19] A. CH3COOH B. CH3CH = CH2 C. CH3OCH3 D. CH3CHO mwVK DËi: B. CH3CH = CH2 e¨vL¨v: ÿvixq KMnO4 †K †eqvi weKviK e‡j| GwUi mvnv‡h¨ Am¤ú„³ †h․M kbv³ Kiv nq| HSTU 01. GKwU M¨vm x †K ‡cvov‡j `ywU M¨v‡mi wgkªY cvIqv hvq| GKwU M¨vm Pz‡bi cvwb‡Z †Nvjv K‡i Ges Ab¨wU Abv`ª© Kcvi (II) mvj‡dU‡K mv`v †_‡K bx‡j cwiYZ K‡i| x †Kvb M¨vm? [HSTU-A.2016-17] A. óxg B. Kve©b WvB A·vBW C. B_vbj D. Bw_b mwVK DËi: D. Bw_b e¨vL¨v: CH2 = CH2+3O2 2CO2 + 2H2O CO2 Pz‡bi cvwb‡K †Nvjv K‡i| H2O CuSO4 ‡K mv`v †_‡K bxj K‡i| DU Technology 01. •Re cvi-A·vB‡Wi Dcw¯
wZ‡Z †cÖvwcwjb Gi mv‡_ HBr †hvM Ki‡j †KvbwU gyL¨ Drcv` n‡e? [DU-Projukti. 2019-20] A. n-†cÖvcvBj †eªvgvBW B. AvB‡mv †cÖvcvBj †eªvgvBW C. n-†cÖvcvBj A¨vj‡Kvnj D. AvB‡mv †cÖvcvBj A¨vj‡Kvnj mwVK DËi: A. n-†cÖvcvBj †eªvgvBW STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION KUET 01. RCH2CH = CH2+ICl [A] wewµqvq gviKwbK‡fi Drcv`, [A] n‡jv- [KUET-2016-17] A. RCH=CHCH2I B. RCH2CHlCH2Cl C. RCH2Cl = CH2 D. RCH2CHClCH2I E. RCHClCH2CH2I mwVK DËi: D. RCH2CHClCH2I e¨vL¨v: RCH2CH = CH2 +IClRCH2CHCl-CH2I BUTex 01. weï× Bw_b M¨vm cÖ¯‧wZ‡Z Mvp H2SO4 Gi cwie‡Z© †Kvb GwmW e¨envi Ki‡j AwaKZi weï× Bw_b cv‡e? [BUTex. 2015-16] A. Mvp (conc) HCl B. Mvp (conc) H3PO4 C. Mvp (conc) HNO3 D. Mvp (conc) HNO2 mwVK DËi: B. Mvp (conc) H3PO4 e¨vL¨v: Mvp mvjwdDwiK Gwm‡Wi cwie‡Z© Mvp dmdwiK GwmW e¨envi Ki‡j AwaKZi weï× Bw_b M¨vm cvIqv hvq| STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. wb‡gœi †Kvb wbiæ`K Gi cÖfv‡e 1600C ZvcgvÎvq B_vbj †_‡K Am¤ú„³ †h․M Bw_wjb Drcbœ nq? [MAT 2011-2012] A. H3PO4 B. H2SO4 C. HCl D. HNO3 mwVK DËi: B. H2SO4 02. Bw_wj‡bi e¨envi wb‡gœi †KvbwU? [MAT. 2009-2010,2007-2008] A. AvB‡mv-‡cÖvcvBj A¨vj‡Kvnj •Zwi‡Z B. ‡PZbvbvkK iƒ‡c C. cøvw÷K wk‡í D. A¨vwm‡Uvb •Zwi‡Z mwVK DËi: B Ges C. 03. †Uwiwjb Drcv`‡bi Rb¨ WvBwg_vBj †Uwi_¨v‡jU Gi mv‡_ wb‡gœi †KvbwU cÖ‡qvRb nq? [MAT 2009-2010] A. ‡cÖvwcwjb MøvBKj B. Bw_wjb A·vBW C. Bw_wjb nvB‡WªvA·vBvW D. Bw_wjb MøvBKj mwVK DËi: D. Bw_wjb MøvBKj e¨vL¨v: †Uwiwjb Drcv`‡bi Rb¨ WvBwg_vBj†Uwi_¨v‡j‡Ui mv‡_ Bw_wjb MøvBKj cÖ‡qvRb nq| DAT 01. cÖvq 150C ZvcgvÎvq wb‡¤œi †Kvb cÖfve‡Ki Dcw¯
‡Z B_vBb †_‡K Bw_b Drcbœ nq? [DAT. 2009-10] A. wb‡Kj B. A¨vwmwUwjb C. H2SO4 D. wfbvBj A¨vj‡Kvnj mwVK DËi: A. wb‡Kj

CHEMISTRY PLUS •Re imvqb 577 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES PART 03 A¨vjKvBb Item- 01: A¨vjKvB‡bi †f․Zag©tÑ ‡f․Z Ae¯
v: C2-C4 M¨vmxq, C5-C12 Zij Ges C13 I Zvi cieZ©x¸‡jv KwVb, eY©nxb, MÜnxb| Item- 02: A¨vjKvB‡bi cÖ¯‧wZ I ivmvqwbK wewµqvtÑ Ah_v cwji RyZv Rvwib Av‡bAh_v I‡RvbxKiY cwji cwjgviKiY RyZv hyZ Rvwib RviY Av‡b A¤øag©x CH2 = CH – OH cybwe©b¨vm CH3 – CHO H – C – C – H O O (MøvB A·vj) COOH COOH (A·vwjK GwmW) CH3COOH Cu – C C – Cu (jvj Aat) Ag – C C – Ag (mv`v Aat) Na – C C – Na (Aèagx©) CO2 + H2O + 3500C + H2O, 60˚C 2% HgSO4, 20% H2SO4 HC ≡CH CaC2+H2O (i) O3/ CCl4 (ii) Zn/H2O ÿvixq RviY [O] KMnO4, KOH A¤øxq RviY [O] K2Cr2O7 + H2SO4 Cu(NH3)2Cl +Ag(NH3)2 NO3 + Na + Br2 (jvj) CCl4 + O2, bxjvf wkLv H2(150-200˚C) Ni/Pt/Pd, CH2 = CH2 A¨vjwKb H2 Ni, CH3 – CH3 A¨vj‡Kb H2, 25˚C Pd, BaSO4 CH2 = CH2 A¨vjwKb 1500C ZvcgvÎvq AvswkK `nb wg‡_b nvB‡Wªv‡Rb ms‡hvRb wewµqv nvB‡Wªv‡Rb ms‡hvRb wewµqv cvwb ms‡hvRb (nvB‡Wªkb) I‡RvbxKiY wewµqv RviY wewµqv A¤øag©xZvi cÖgvY CHCH (eY©nxb) n¨v‡jv‡Rb ms‡hvRb Br Br Br Br Aw· A¨vwmwUwjb wkLv Cl Item- 03: A¨vjKvB‡bi I‡RvbxKiY wewµqv: `yB ai‡bi cÖkœ Av‡m- Drcv‡`i bvg ⇌wewµq‡Ki bvg| (i) wewµqK †_‡K Drcv` wbY©q- A¨vjKvBbmg~‡ni m‡½ CCl4 G `ªexf~Z I‡Rvb hy³ n‡q I‡RvbvBW MwVZ nq hv Zn Gi Dcw¯
wZ‡Z cvwb †hv‡M Av`ª© we‡køwlZ n‡q WvB Kve©wbj †h․M Drcbœ K‡i wKš‧ Zn Gi Abycw¯
wZ‡Z `yB AYy GKB ev wfbœ Kve©w·wjK GwmW MVb K‡i| RC CH + O3 Zn/H2O RCCH + ZnO + H2O O O H2O RCCH O O H2O2 RCOOH + HCOOH (ii) Drcv` †_‡K wewµq‡Ki ms‡KZ wbY©q ev IUPAC wbY©qD`vniY: GKwU A¨vjKvBb‡K I‡Rv‡bvjvBwmm Kivi d‡j B_vbwqK GwmW cvIqv hvq| †h․MwUi IUPAC bvg Kx? mgvavb: cÖ_gZ- †h․M `ywU‡K cvkvcvwk Ggbfv‡e emv‡Z n‡e †hb C MÖæc cvkvcvwk O _v‡K| evwK MÖæc¸‡jv‡K cv‡k Qvwo‡q w`‡Z n‡e| wØZxqZ- Kve©w·wjK MÖæ‡ci ‘C’ Gi mv‡_ hy³ ‘O’ I OH MÖæc ev` w`‡Z n‡e Ges ‘C’ ؇qi g‡a¨ wÎ-eÜb w`‡q w`‡Z n‡e| Z…ZxqZ- †h․MwUi IUPAC bvg †ei Ki‡Z n‡e| A¨vjKvB‡bi I‡Rv‡bvjvBwmm Gi d‡j `yB AYy (GKB ev wfbœ) Kve©w·wjK GwmW Drcbœ nq| †h‡nZz ïay B_vbwqK GwmW cvIqv wM‡q‡Q †m‡nZz †evSv hv‡”Q †h B_vbwqK Gwm‡Wi `yB AYy Drcbœ n‡q‡Q| (i) CH3C CCH3 O O OH OH (ii) CH3C CCH3 (iii) weDUvBb-2

578 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES Item- 04: ÿvixq KMnO4 `ªeY Øviv: ÿvixq KMnO4 Øviv A¨vjKvB‡bi RviY‡K GKwU mvaviY wbqg I gvÎ `yBwU e¨wZµg Øviv AwZ mn‡RB e¨vL¨v Kiv hvq| wbqg: ÿvixq KMnO4 Øviv Rvi‡Yi d‡j (C C) †f‡½ hvq Ges (C C) Gi `yB cv‡k¦©i Kve©b wb‡q `ywU Kve©w·wjK GwmW •Zwi nq| RC CR + [O] + H2O KMnO4 KOH ––––––––––– RCOOH + RCOOH e¨wZµg-01: hw` R = H nq, Zvn‡j HCOOH Drcbœ bv n‡q eis CO2 M¨vm Drcbœ nq| RC CH + [O] KMnO4 KOH –––––––––– RCOOH + CO2+ H2O e¨wZµg-02: hw` R = R = H nq, Zvn‡j A·vwjK GwmW Drcbœ nq| HC CH + [O] KMnO4 KOH ––––––––––– COOH COOH Z_¨ KwYKv: A¨vjKvBb-1 ev cÖvwšÍK A¨vjKvBb ev B_vBb A¤øag©x n‡jI Giv NaOH ev KOH Gi mv‡_ wewµqv K‡i bv| Aw· A¨vwmwUwjb wkLvi ZvcgvÎv 3000-3500C| ïaygvÎ A¨vjKvBb-1 ev cÖv‡šÍ wÎ-eÜb _vK‡j A¨vjKvBbwU mwµq ev A¤øag©x ev wewµqv K‡i| Short Ans Question SAQWRITTEN SUGGESTION BAQ Broad Ans Question cÖkœ-01: k~b¨¯
vb c~iY Ki: + O2 KMnO4 KOH COOH | COOH [BUET. 2019-20] DËi: HC CH (B_vBb) cÖkœ-02: ivmvqwbK wewµqv¸‡jv m¤ú~Y© Ki: CH3CCCH3 + Ag+ (NH3)2NO3 (aq) – ? [KUET. 2019-20] DËi: CH3C CCH3 + Ag+ (NH3)2NO3 (aq) No Reaction KviY, Alkyle Gi cÖvšÍxq Kve©b¸‡jv‡Z H †bB| cÖkœ-03: K¨vjwmqvg Kve©‡bU‡K wKfv‡e A¨vwmwUwj‡b iƒcvšÍwiZ Ki‡e, wewµqvi gva¨‡g †`LvI| [BUET. 2001-02] DËi: CaCO3 1000C –––– CaO + CO2 ; 5C + 2CaO 2000C –––––––– •e`y¨wZK Pzjøx 2CaC2 + CO2 ; C Ca + 2H2O HC CH + Ca(OH)2 C cÖkœ-04: cÖvšÍxq A¨vjKvBb¸‡jv A_ev A¨vjKvBb-1 A¤øag© cÖKvk K‡i †Kb? [BUET. 2014-15, iv.‡ev. 2019; Awfbœ cÖkœ 2018; h.‡ev. 2017, 2016; Awfbœ cÖkœ 2018] DËi: cÖvšÍxq A¨vjKvBb¸‡jvi cÖvšÍxq C cigvYy sp msKwiZ nq| d‡j e܇b Ave× AiweUv‡j s PwiÎ (50%) †ewk nq Ges AiweUv‡ji AvKvi ÿz`ª nq| F 1 d 2 m~Îvbymv‡i cÖvšÍxq C cigvYy ZLb eÜb e ‡Rv‡oi Dci †ekx AvKl©Y ej cÖ‡qvM K‡i| d‡j H + Avqb gy³ nq Ges A¤øxq •ewkó¨ cÖKvk cvq| cÖkœ-05: Aw·-GwmwUwjb wkLv wKfv‡e Drcbœ nq? ivmvqwbK wewµqvi gva¨‡g †`LvI| [RUET. 2012-13] DËi: Aw· A¨vwmwUwjb wkLv: miæ avZe b‡ji gy‡L A¨vwmwUwjb M¨vm‡K cÖPzi evqy ev Aw·‡R‡b cÖR¡wjZ Ki‡j A¨vwmwUwj‡bi c~Y© `n‡bi d‡j bxjvf wkLvmn R¡‡j D‡V| ZLb cÖvq 3500C ZvcgvÎvq Drcbœ nq| G wkLv‡K Aw· A¨vwmwUwjb wkLv e‡j| C2H2 + O2 CO2 + H2O + 3500C e¨envi: avZz Mjv‡bv I †Rvov jvMv‡bvi Kv‡R e¨eüZ nq| cÖkœ-06: A¨vjwKb I A¨vjKvB‡bi ivmvqwbK cv_©K¨ †jL| DËi: A¨vjwKb A¤øag©x bq Aciw`‡K ïaygvÎ A¨vjKvBb (A¨vjKvBb-1) A¤øag©x I ¯^wµq| A¨vjKvB‡bi cÖvšÍxq A¤øag©x †cÖvUb _vK‡j A¨v‡gvwbqv hy³ Cu2Cl2 Gi mv‡_ Kcvi A¨vjKvbvB‡Wi/Kcvi A¨vwmwUjvB‡Wi jvj Aat‡ÿc m„wó nq| CHCH+2Cu(NH3)2Cl Cu–CC–Cu (jvj Aat‡ÿc) + NH4Cl+NH3 A¨vjKvBb (A¨vwmwUwjb) A¨v‡gvwbqv hy³ AgNO3 Gi mv‡_ wewµqv K‡i mv`v e‡Y©i wmjfvi A¨vjKvbvBW/wmjfvi A¨vwmwUjvB‡Wi Aat‡ÿc m„wó K‡i| HCCH+2Ag(NH3)2NO3 Ag–CC–Ag (mv`v Aat‡ÿc) + NH4Cl+NH3 cÖkœ-07: wb‡¤œiwewµqvwUc~Y© Ki: CH3C CH + O3 H2O –– ... [BUTex. 2018-19] DËi: CH3C CH O3 – CH3C O CH O O H2O –– CH3CCH + H2O2 CH3CCOOH O O O cÖkœ-08: A I B wbY©q Ki, hLb C3H6 Br2 (CCl4) A KOH(alc) B [BUTEX: 19-20] DËi: CH2 = CH – CH3 Br2 (CCl4) CH2 | Br – CH | Br – CH3 KOH(alc) CH C – CH3 + 2HBr A ‡h․MwU n‡e CH2Br – CHBr – CH3 (1,2-WvB‡eªv‡gv †cÖv‡cb) B ‡h․MwU n‡e CH C – CH3 (‡cÖvcvBb-1)

CHEMISTRY PLUS •Re imvqb 579 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES cÖkœ-09: CnH2n–2 n=3 H2O 2% HgSO4 20% H2SO4 A B Zn.Hg HCl C cÖ`Ë wewµqvwU m¤úbœ Ki| [BUTEX: 19-20] DËi: CH3C CH + H2O 2%HgSO4 20%H2SO4 CH3–C | HO (A) = C | H – H CH3 – C || O (B) – CH3 Zn–Hg.HCl CH3CH2CH3 (C) REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION DU 01. Av`ª© evZv‡mi ms¯ú‡k© K¨vjwmqvg Kve©vBW wb‡¤œi †Kvb †h․MwU Drcbœ K‡i? [DU. 2019-20; DU-Projukti. 2019-20] A. Ethene B. Ethane C. Ethyne D. Ethanal mwVK DËi: C. Ethyne e¨vL¨v: CaC2 + H2O Ca(OH)2 + CH CH 02. GwmwUwjb‡K CCl4 `ªe‡Y ‡i‡L Zv‡Z †eªvwgb M¨vm Pvjbv Ki‡j †h Drcv` nq- [DU. 2010-2011] A. Br2CH – CHBr2 B. BrCH = CHBr C. Br2CH – CHCl2 + CHCl3 D. Cl2CH – CHBr2 + CHBr3 mwVK DËi: A. Br2CH – CHBr2 e¨vL¨v: HC CH + Br2 Br2CH – CHBr2 03. 1-weDUvBb Ges 2-weDUvBb Gi cv_©K¨Ki‡Y †Kvb wewµqKwU e¨eüZ nq? [DU.2009-2010, 2006-2007] A. Br2/CCl4 B. H2/Pt C. I2/KOH D. Cu2+/HOmwVK DËi: D. Cu2+/HOe¨vL¨v: A¨vjKvBbmg~n A¤øag© cÖ`k©b K‡i| Z‡e ïay 1-A¨vjKvBb A_v©r cÖvwšÍK R–CC–H g~jK hy³ A¨vjKvBb A¤øxq| ZvB G‡`i nvB‡Wªv‡Rb cigvYy avZz Øviv cÖwZ¯
vwcZ nq Ges avZe A¨vjKvBbvBW Drcbœ nq| G wewµqv `yÕai‡bi weKviK Øviv N‡U| D`vnib- A¨v‡gvwbqv hy³ wKDcÖvm †K¬vivBW ïay gvÎ A¨vjKvBb-1(1-weDUvBb) Gi mv‡_ wewµqv K‡i| CH3CH2HC CH+2Cu(NH3)2Cl Cu–C C–Cu + 2NH4Cl + 2NH3 Dc‡iv³ kZ© 2-weDUvBb Gi †ÿ‡Î cÖ‡hvR¨ bq| 04. Kÿ ZvcgvÎvq cvwbi mv‡_ K¨vjwmqvg Kve©vB‡Wi wewµqvi d‡j wb‡Pi †Kvb †h․MwU Drcbœ nq? [DU.2002-03; JnU. 2012-13 & 2014-15; RU. 2008- 09, 2010-11, 2016-17, JU-A. 2012-13, SUST-A. 2011-12, MBSTU-A. 2011-12, BAU. 2011-12] A. Bw_wjb B. wg‡_b C. A¨vwmwUwjb D. B‡_b mwVK DËi: C. A¨vwmwUwjb e¨vL¨v: KÿZvcgvÎvq cvwbi mv‡_ K¨vjwmqvg Kve©vB‡Wi wewµqvq •Zwi nq A¨vwmwUwjb| CaC2 + H2O CH CH + Ca(OH)2 JU 01. †Kvb †h․MwU A¤øag©x? [JU-D5.2017-18; HSTU.A.2017-18] A. RCH2CH2CH = CH2 B. RCH2C CH C. RCH2 = CH2 D. RCH2CH2CH3 mwVK DËi: B. RCH2C CH e¨vL¨v: cÖvšÍxq A¨vjKvBb mg~n A¤øag©x| 02. A¨vjKvBb-1 Gi g„`y A¤øag©xZv cixÿvq e¨eüZ weKviK †KvbwU?[JU.14-15] A. A¨v‡gvwbqv wgwkÖZ AgNO3 `ªeY B. †dwjs `ªeY C. AgNO3 `ªeY D. Ba(NO3)2 `ªeY mwVK DËi: C. AgNO3 `ªeY e¨vL¨v: A¨vjKvBb-1 Gi g„`y A¤øag©xZv cixÿvq e¨eüZ weKviK n‡jv: (i) Zij A¨v‡gvwbqvq `ªexf~Z Na avZz (ii) A¨v‡gvwbqvhy³ AgNO3 (iii) A¨v‡gvwbqvhy³ Cu2Cl2| 03. wb‡¤œi †Kvb †h․MwU wmjfvi bvB‡Uª‡Ui mv‡_ jeY Drcbœ K‡i?[JU. 2011-12] A. 1-cÖwcb B. 2-weDUvBb C. 2-cÖwcb D. 1-weDUvBb mwVK DËi: D. 1-weDUvBb e¨vL¨v: 1-weDUvBb †h․MwU cÖvwšÍK A¨vjKvBb A_©vr A¨vjKvBb-1 nIqvq GwU A¨v‡gvwbqvhy³ wmjfvi bvB‡Uª‡Ui mv‡_ jeY Drcbœ K‡i| 04. †KvbwU A¨v‡gvwbqvhy³ wKDcÖvm †K¬vivB‡Wi mv‡_ jvj Aat‡ÿc m„wó Ki‡e? [JU. 2009-10] A. CH3CH = CHCH3 B. CH3CH2C CH C. CH3CH2CH2 = CH3 D. CH3C CCH3 mwVK DËi: B. CH3CH2C CH e¨vL¨v: 1-weDUvBb (CH3CH2C CH) †h․MwU cÖvwšÍK A¨vjKvBb A_©vr A¨vjKvBb-1 nIqvq A¨v‡gvwbqvhy³ wKDcÖvm †K¬vivB‡Wi mv‡_ jvj Aat‡ÿc m„wó Ki‡e| RU 01. ‡KvbwU A¨vjKvB‡bi ms‡KZ? [RU. 2019-20] A. C2H4 B. C3H6 C. C3H8 D. C4H6 mwVK DËi: D. C4H6 02. †KvbwU A¨v‡gvwbqvhy³ AgNO3 Gi mv‡_ wewµqv K‡i? [RU. 06-07, 09-10] A. Bw_wjb B. A¨vwmwUjb C. B‡_b D. B_vBj Av‡qvWvBW mwVK DËi: B. A¨vwmwUjb e¨vL¨v: A¨vwmwUwjb A¨v‡gvwbqvhy³ AgNO3 Gi mv‡_ wewµqv K‡i| 03. A¨v‡gvwbqvhy³ wmjfvi bvB‡UªU `ªe‡Yi ga¨ w`‡q A¨vwmwUwjb Pvjbv Ki‡j †Kvb e‡Y©i A¨vwmUvBjvBW MwVZ nq? [RU. 2008-09] A. jvj B. mv`v C. bxj D. †Mvjvcx mwVK DËi: B. mv`v e¨vL¨v: A¨v‡gvwbqvhy³ wmjfvi bvB‡UªU `ªe‡Yi ga¨ w`‡q A¨vwmwUjb Pvjbv Ki‡j mv`v e‡Y©i †h․M MwVZ nq| 04. †Kvb †h․MwU A¨v‡gvwbqvhy³ wmjfvi bvB‡Uª‡Ui mv‡_ wewµqv K‡i Aat†ÿc †`q? [RU. 2006-2007; IU. 2006-07] A. C2H6 B. C2H2 C. C2H4 D. C3H6 mwVK DËi: B. C2H2 05. CHCH Gi mv‡_ HI Zv wewµqvq †Kvb †h․M Drcbœ nq? [RU.06-07] A. CH3CHI2 B. CH2I CH2I C. CH3CH2I D. C2H6 mwVK DËi: A. CH3CHI2 e¨vL¨v: A¨vjKvB‡bi mv‡_ nvB‡Wªv‡Rb n¨vjvBW `yB av‡c wewµqv K‡i| cÖ_g av‡c AcÖwZmg g‡bvn¨v‡jv‡Rb RvZK Ges cieZ©x av‡c gvK©wbKf wbqgvbyhvqx ms‡hvRb N‡U I WvBn¨vjvBW MwVZ nq| R–CC–R HX – R–CH=CRX HX – R–CH2–CRX2 R–CCH HX – R–CX=CH2 HX – R–CX2–CH3 H–CC–H HI – H2C = CHI HI – CH3–CHI2

580 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES CU 01. †Kvb †h․MwU AwaK A¤øxq? [CU-A, 2007-08, MBSTU-C. 2019-20, 17-18; CVASU. 13-14, SylAU. 06-07] A. CH3CH3 B. CH2 = CH2 C. CH CH D. CH3CH2CH3 E. CH3 + CH = CH2 mwVK DËi: C. CH CH e¨vL¨v: A¨vwmwUwjb (CH CH) GwmWxq cÖK…wZi Ges A¨v‡gvwbqvhy³ AgNO3 Gi mv‡_ jeY •Zix K‡i| 02. A¨v‡gvwbqv wgwkÖZ wKDcÖvm †K¬vivBW I HC CH Gi wewµqvq Drcbœ jvj e‡Y©i Drcv`bwU g~jZ- [CU-A. 2004-05] A. Cu B. CuC = CCl C. CuC = CCu D. CuCl2 mwVK DËi: C. CuC = CCu e¨vL¨v: A¨v‡gvwbqv wgwkÖZ wKDcÖvm †K¬vivBW I HC CH Gi wewµqvq Drcbœ jvj e‡Y©i Drcv`bwU g~jZ Cu.C = C.Cu| KU 01. A¨vwmUvBwjb‡K ÿvixq KMnO4 Øviv RvwiZ Ki‡j †KvbwU cvIqv hvq? [KU. 2012-13] A. diwgK GwmW B. A¨vwmwUK GwmW C. A·vwjK GwmW D. B_vBwjb MøvBKj mwVK DËi: C. A·vwjK GwmW e¨vL¨v: A¨vwmUvBwjb‡K ÿvixq KMnO4 Øviv RvwiZ Ki‡j •Zix nq A·vwjK GwmW| HC CH + [O] KMnO4/OH ––––––––– HOOCCOOH (A·vwjK GwmW) 02. wb‡¤œi †Kvb †h․MwU GwmW cÖK…wZi A_©vr jeY Drcbœ K‡iÑ [KU. 2001-02] A. 2-weDUvBb B. 2-‡c›UvBb C. 3-‡c›UvBb D. 1-‡c›UvBb mwVK DËi: D. 1-‡c›UvBb e¨vL¨v: 1-‡c›UvBb †h․MwU cÖvwšÍK A¨vjKvBb nIqvq GwU GwmW cÖK…wZi Ges A¨v‡gvwbqvhy³ AgNO3 Gi mv‡_ jeY •Zix K‡i| CoU 01. wb‡¤œv³ wewµqvq X †h․MwUi bvg Kx? [CoU–A. 2019-20] CHCH 20% H2SO4 2% HgSO4 60C X + H2O A. BDwiqv B. B‡_b C. B_vb¨vj D. B_vbj mwVK DËi: C. B_vb¨vj Agriculture 01. Kcvi je‡Yi Dcw¯
wZ‡Z A¨vwmwUwjb nvB‡WªvmvqvwbK Gwm‡Wi mv‡_ †h wewµqv †`q, ZvÑ [SAU. 2009-10] A. hyZ wewµqv B. AcmviY C. cwjgviKiY D. cÖwZ¯
vcb mwVK DËi: D. cÖwZ¯
vcb e¨vL¨v: Kcvi je‡Yi Dcw¯
wZ‡Z A¨vwmwUwjb nvB‡WªvmvqvwbK Gwm‡Wi mv‡_ cÖwZ¯
vcb wewµqv †`q| STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION SUST 01. A¨v‡gvwbqv wgwkÖZ wKDcÖvm †K¬vivBW `ªe‡Y †KvbwU •ewkó¨c~Y© jvj Aat‡ÿc †`q? [SUST-B. 2013-14] A. ‡c‡›Ub B. 1-‡cw›Ub C. 2-‡cw›Ub D. 1-‡c›UvBb E. 2-‡c›UvBb mwVK DËi: D. 1-‡c›UvBb e¨vL¨v: 1-†c›UvBb †h․MwU cÖvwšÍK A¨vjKvBb nIqvq GwU A¨v‡gvwbqv wgwkÖZ wKDcÖvm †K¬vivBW `ªe‡Y •ewkó¨c~Y© jvj Aat‡ÿc †`q| 02. GKwU †evZ‡j Zij nvBv‡WªvKve©b Av‡Q, hv A¨v‡gvwbqv wgwkªZ CuCl2 `ªe‡Yi mwnZ jvj Aat‡ÿc †`q| nvB‡WªvKve©bwU wK? [SUST 2009-10] A. RCH = CHR B. RC CR C. RC CH D. RCH CH2 mwVK DËi: C. RC CH e¨vL¨v: A¨vjKvBb-1 kbv³KiYt cÖ_‡g M¨vm wgkªY‡K A¨v‡gvwbqv hy³ wKDcÖvm †K¬vivBW `ªe‡Yi ga¨ w`‡q cÖevwnZ Ki‡j `ªe‡Y 1- A¨vjKvBb †kvwlZ n‡q jvj e‡Y©i wKDcÖvm A¨vjKvBbvB‡Wi Aat‡ÿc Dcbœ nq| G Aat‡ÿc‡K c„_K K‡i jNy HCl mn‡hv‡M DËß Ki‡j cybivq A¨vjKvBb cvIqv hvq| RCCH + CuCl + 2NH4OH R–CC–Cu+NH4Cl +H2O jvj Aat‡ÿc R – C Cu + HCl RC CH + CuCl JUST 01. GwmUvBwjb RviY Ki‡j Drcbœ nq- [JUST-B: 2019-20] A. GwmUvBjwWnvBW B. MøvB‡KvKwjK GwmW C. A·vwjK GwmW D. GwmwUK GwmW mwVK DËi: C. A·vwjK GwmW 02. CH3C CH + H2 Pb + BaSO4 ––––––––– ? [JSTU-B. 2013-14] A. CH3CH2CH3 B. CH3CH2CH2OH C. CH4 + C2H6 D. CH3CH = CH2 mwVK DËi: D. CH3CH = CH2 e¨vL¨v: CH3C CH + H2 Pb + BaSO4 ––––––––– CH3CH = CH2 GB wewµqvq e¨eüZ Pb + BaSO4 weKvi‡K ejv nq †iv‡RÛ gvÛ weKviK| GLv‡b e¨eüZ BaSO4 cÖfveK wel wnmv‡e KvR K‡i Ges Pb Gi cÖfveY ÿgZv Kwg‡q †`q| STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION 01. 2-weDUvB‡bi I‡Rv‡bvjvBwm‡m cvIqv hvq- [BUTex. 2015-16] A. Formic acid B. Propanoic acid C. Acetic acid D. Butanoic acid mwVK DËi: C. Acetic acid e¨vL¨v: A¨vjKvBb mg~‡ni m‡½ CCl4 `ªexf‚Z I‡Rvb hy³ n‡q I‡RvbvBW †h․M MwVZ nq| hv wRs‡Ki Dcw¯
‡Z cvwb †hv‡M Av`©ª we‡køwlZ n‡q WvBKv‡e©vwbj †h․M Drcbœ K‡i| wKš‧ wRs‡Ki Abycw¯
wZ‡Z WvB-wK‡Uvb I H2O2 Drcbœ nq| Drcbœ H2O2 Øviv WvB-wK‡Uvb Avevi RvwiZ n‡q `yB AYy GKK ev wfbœ Kv‡e©vw·wjK GwmW MVb K‡i| Z‡e B_vBb I‡Rvb Øviv RvwiZ n‡q MøvB-A·vj MVb K‡i| †h‡nZz wewµqvwU‡Z wRsK Abycw¯
Z ZvB A¨vwmwUK GwmW Drcbœ n‡q‡Q| STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. wb‡¤œi †KvbwU nvB‡WªvKve©‡bi Rb¨ mwVK bq? [MAT. 2009-10] A. A¨vjKvB‡bi eÜb †KvY 180 B. A¨vj‡K‡bi cÖ¯‧wZ‡Z •Re Gwm‡Wi jeY cÖ‡qvRb nq C. A¨vjKvBb Kg mwµq D. A¨vjwKb AYyi MVb w·KvYxq mgZjxq mwVK DËi: C. A¨vjKvBb Kg mwµq 02. Kÿ ZvcgvÎvq cvwbi mv‡_ K¨vjwmqvg Kve©vB‡Wi wewµqvi d‡j wb‡Pi †Kvb †h․MwU Drcbœ nq? [MAT. 2006-06] A. Bwjwjb B. wg‡_b C. A¨vwmwUwjb D. B‡_b mwVK DËi: C. A¨vwmwUwjb

CHEMISTRY PLUS •Re imvqb 581 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES PART 04 A¨vwj‡dwUK I A¨v‡iv‡gwUK nvB‡WªvKve©‡bi n¨v‡jv‡Rb RvZKmg~n A¨vj‡Kb AYyi nvB‡Wªv‡Rb n¨v‡jv‡Rb Øviv cÖwZ¯
vwcZ n‡q n¨v‡jv‡Rb RvZK MwVZ nq| HCH3 X2 HCH2X X2 HCH.X2 X2 HCX3 A¨vj‡Kb g‡bvn¨v‡jv‡Rb RvZK WvBn¨v‡jv‡Rb RvZK UªvBn¨v‡jv‡Rb RvZK CHCl3 (†K¬v‡ivdig) CHBr3 (†eªv‡gvdig) CHI3 (Av‡qv‡Wvdig) n¨v‡jvdig wMÖMbvW© weKviKt ï®‥ B_v‡ii Dcw¯
wZ‡Z A¨vjKvBj ev A¨vivBj n¨vjvBWmg~n‡K (X = Cl , Br , I ) g¨vM‡bwmqvg mn wid¬v· Ki‡j A¨vjKvBj ev A¨vivBj g¨vM‡bwmqvg n¨vjvBW (RMgX/ArMgX) bvgK GKwU AZ¨šÍ wµqvkxj I g~j¨vevb weKviK •Zwi nq| RX/ArX + Mg Dry Ether –––––––– RMgX/ArMgX ; Avwe®‥vi‡Ki bvg Abymv‡i G weKviK‡K wMÖMbvW© weKviK ejv nq| Item-01: A¨vjKvBj n¨vjvBW Gi cÖ¯‧wZ I ivmvqwbK wewµqvtÑ A¨vjKvBj n¨vjvB‡Wi cÖ¯‧wZ: * wPwýZ wewµqv¸‡jv ¸iæZ¡c~Y© H2O CH4 (nvB‡WªvKve©b) CH3OH CH3 – CH3 (nvB‡WªvKve©b) H–CHO CH3 – CH2 – OH (1˚ A¨vj‡Kvnj) OH CH3 – CHO CH3 – CH – CH3 (2˚ A¨vj‡Kvnj) OH CH3 CO CH3 CH3 – C – CH3 (3˚ A¨vj‡Kvnj) CH3 CO2 CH3 – COOH (Kve©w·wjK GwmW) CH3–MgX wMÖMbvW© weKviK jÿ¨ Ki: RX+Na Dry Ether –––––– RR + NaX DU©R wewµqv RX + Mg Dry Ether –––––– RMgX wMÖMbvW© weKviK Zvn‡j †`Lv hv‡”Q, DU©R wewµqvq Na avZz Ges wMÖMbvW© weKviK •Zwi‡Z Mg avZz e¨eüZ nq| ** ** ** *** ** * * A¨vjKvBj n¨vjvB‡Wi ¸iæZ¡c~Y© wewµqv: R – C N + KCl LiAlH4 B_vi 1 A¨vwgb A¨vgvBW HCl H2O H2O H2O2 LiAl(OC2H5) B_vi R–CH+NH R–CO–NH2 R–COOH–NH3 R–CH2–NH2 GwmW 2 A¨vwgb Item-02: n¨v‡jvdig wewµqv eySvi †K․kjt Kve©wbj Ges A¨vj‡Kvn‡ji †ÿ‡Î - †h mKj †h․‡M CH3CO- (A¨vwm‡Uvg~jK) we`¨gvb Ges GB MÖæ‡ci Lvwj eÜbwU Øviv ÔKve©bÕ wKsev ÔnvB‡Wªv‡RbÕ Gi ms‡M hy³ _v‡K †Kej †m me †h․M n¨v‡jvdig wewµqv cÖ`k©b K‡i| †hgb- A¨vwmU¨vjwWnvBW(CH3CHO),A¨vwm‡Uvb(CH3COCH3), B_vbj (CH3CH2OH), AvB‡mv†cÖvcvBj A¨vj‡Kvnj (CH3CH(OH)CH3) BZ¨vw` †UKwbKt Kve©wbj Ges A¨vj‡Kvn‡ji †ÿ‡Î 2 bs Kve©‡b Aw·‡Rb (O) _v‡K| ? mZK©Zv: CH3CO MÖæc _vKv m‡Ë¡I n¨v‡jvdig wewµqv †`q bv- (i) CH3CONH2 (A¨vwmUvgvBW) (ii) CH3COCl (A¨vwmUvBj †K¬vivBW) (iii) CH3COOC2H5 (B_vBj A¨vwm‡UU) (iv) (CH3CO)2O (A¨vwmwUK A¨vbnvBWªvBW) (v) CH3COOH (A¨vwmwUK GwmW)| KviY G †h․M¸‡jv‡Z CH3CO Gi mv‡_ C ev H hy³ bq| A_©vr, n¨v‡jvdig wewµqvi †ÿ‡Î g‡b ivL‡e, A¨vjwWnvBW, wK‡Uvb Ges A¨vj‡Kvn‡ji †ÿ‡Î N‡U| Item-03: mvB‡Rd bxwZ: †h -Kve©‡b Kg msL¨K nvB‡Wªv‡Rb cigvYy hy³ _v‡K †m Kve©b †_‡KB †ewki fvM nvB‡Wªv‡Rb cigvYy AcmvwiZ nq| RCHCHCH3 A¨vj‡Kvnjxq (alc) mvB‡Rd bxwZ H X RCH = CHCH3 + RCH2CH = CH2 Rjxq (aq) cÖwZ¯
vcb RCHCH3 + KX OH 80% 20% †hLv‡b †`wL‡e Rj †mLv‡bB A¨vj‡Kvnj KOH

582 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES Item-04: A¨vjKvBj n¨vjvBW Gi e¨envi: (i) `ªveK iƒ‡c CCl4, CH2Cl2, CHCl3 (ii) wngvqK hš¿ ev †iwd«Rv‡iU‡i Zijiƒ‡c Freon-11, Freon-12, Freon-121 (iii) G‡ivmj †¯úª Gi `ªveKiƒ‡c welv³ c`v‡_©i `ªveK I Ilya wQUv‡bvi Kv‡R Freon e¨eüZ nq| (iv) AwMœ wbe©vcKiƒ‡c CCl4, CBr2ClF eZ©gv‡b DËg AwMœwbe©vcKiƒ‡c CBr2ClF e¨envi Kiv nq, hvi evwYwR¨K bvg BCF| (v) Kvco-†Pvc‡oi WªvB Iqvwks Zijiƒ‡c I‡q‡÷ªvmj (CHCl = CCl2)| (vi) ivevi, fvwb©m, †cB›U, †Zj I Pwe©i `ªveKiƒ‡c I‡q÷ªb (CHCl2CHCl2)| (vii) KxUbvkK wn‡m‡e Gammexane ev Lindane ev †n·v‡K¬v‡iv mvB‡K¬v‡n‡·b ev †ebwRb †n·v‡K¬vivBW (BHC), wWwWwU, A¨vjwWªb, †K¬vi‡Wb, wWjwWªb| Short Ans Question SAQWRITTEN SUGGESTION BAQ Broad Ans Question cÖkœ-01: wb‡¤œi wµqvmg~n msNU‡b mnvqK ivmvqwbK c`v‡_©i bvg ms‡KZmn wjL: Ô†PZbvbvkKÕ| [BUTex. 2003-04] DËi: †K¬v‡ivdig (CHCl3)| cÖkœ-02: RwÛm, wjfvi wm‡ivwmm †iv‡Mi Rb¨ `vqx wK? [BUTex. 2008-09] DËi: nvB‡WªvKve©b¸‡jvi n¨v‡jv‡Rb RvZK mg~‡ni e¨env‡ii d‡j| cÖkœ-03: wMÖMbvW© weKviK cvwbi Abycw¯
wZ‡Z •Zwi Kiv nq †Kb? [Kz.‡ev. 2019] DËi: wMÖMbvW© weKviK cvwbi Dcw¯
wZ‡Z •Zix Ki‡j GwU cvwbi mv‡_ wewµqv K‡i RH (A¨vj‡Kb) I Mg(OH)2 ‣Zix Ki‡e| ZvB GwU ether Gi Dcw¯
wZ‡Z •Zix Kiv nq| Ges RMgX cieZ©x‡Z B_vi Gi mv‡_ wewµqv K‡i bv| R–X Mg Ether RMgX R–X Mg H2O R–MgX + H2O RH+Mg(O2H) S–S+S– cÖkœ-04: D‡jøwLZ †h․‡Mi evwYwR¨K bvg wjL| CCl3-NO2 [BUET. 2011-12] DËi: †K¬v‡ivwcwµb| cÖkœ-05: wWwWwU (DDT) Kx? Gi cÖ¯‧wZ I e¨envi wjL| [RUET. 2011-12, BUET. 2007-08] DËi: 4,4-WvB‡K¬v‡iv WvBwdbvBj UªvB‡K¬v‡iv B‡_b‡K ms‡ÿ‡c wWwWwU e‡j| cÖ¯‧wZ: Mvp H2SO4 Gi Dcw¯
wZ‡Z `y-AYy †K¬v‡iv‡ebwRb I GK AYy †K¬vivj‡K DËß Ki‡j GK AYy cvwb AcmviY Øviv wWwWwU Drcbœ nq| Cl3CC=O H H Cl H Cl + Conc. H2SO4 100C Cl3CC Cl Cl H + H2O (c¨viv-c¨viv-WvB‡K¬v‡iv-WvBwdbvBj UªvB‡K¬v‡iv B‡_b) (C14H9Cl5) e¨envi: 1874 mv‡j Avwe®‥…Z g¨v‡jwiqv I UvBd‡qW †iv‡Mi RxevYy aŸsm Kivi Rb¨ 1946 mv‡j cÖ_g wW,wW,wU e¨envi Kiv nq| GwU kw³kvjx RxevYybvkK I KxUbvkK wnmv‡e e¨eüZ nq| Z‡e cvk¦cÖwZwµqvi Kvi‡Y eZ©gv‡b Gi e¨envi mxwgZ| REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION DU 01. wb‡Pi wewµqv w¯‥‡g X I Y Kx? [DU. 2018-19] CH3CH2CH2Br – X CH3CH2CH2CN – Y CH3CH2CH2COOH A. X = NH3 Y= HCl(aq) B. X = KCN in C2H5OH, Y=NaOH(aq) C. X = KCN in C2H5OH, Y= HCl(aq) D. X = HCN, Y = NaOH(aq) mwVK DËi: C. X = KCN in C2H5OH, Y= HCl(aq) e¨vL¨v: CH3CH2CH2Br CH3CH2CH2CN + KBr CH3CH2CH2COOH + NH3 + KCN HCl (aq) 02. wMÖMbvW© weKviK n‡jv- [DU.2012-13, 2001-02; JnU. 2009-10; RU. 2011-12; BSMRSTU-C. 2019-20; MBSTU-A. 2017-18] A. CH3ONa B. R BaCl C. RMgX D. R CaX mwVK DËi: C. RMgX e¨vL¨v: wMÖMbvW© weKviK n‡jv: R-MgX/ Ar-MgX 03. A¨vj‡Kvn‡ji mv‡_ wMÖMbvW© weKvi‡Ki (RMgX) wewµqvq Drcbœ nq- [DU. 03-04, 06-07; CU, 07-08, 08-09; CoU. 13-14; MBSTU. 13-14 PUST. 17-18] A. A¨vjwKb B. B_vi C. A¨vj‡Kb D. GwmW mwVK DËi: C. A¨vj‡Kb e¨vL¨v: A¨vj‡Kvn‡ji (ROH) mv‡_ wMÖMbvW© weKvi‡Ki (RMgX) wewµqvq Drcbœ nq A¨vj‡Kb| RMgX + OHR H2O H + RR + Mg(OH)X A¨vj‡Kb

CHEMISTRY PLUS •Re imvqb 583 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 04. wb‡Pi wewµqvi Drcv` Q wK? [DU.2005-06; JUST-B. 2013-14] CH3–CHO+CH3–MgBr P H2O –– Q A. CH3–CH2OH B. CH3COOH C. (CH3)2CH(OH) D. CH3–O–CH3 mwVK DËi: C. (CH3)2CH(OH) e¨vL¨v: digvjwWnvBW (HCHO) e¨ZxZ Ab¨ †h †Kvb A¨vjwWnvBW, CH3MgBr Gi mv‡_ wewµqv K‡i AšÍeZ©x †h․M (P) MVb K‡i hv Av`ª© we‡køwlZ n‡q Secondary or 2° Alcohol (Q) Drcbœ K‡i| C=O+CH3MgBr H3C H C H3C H OMgX CH3 H2O H + H3CCOH+Mg(OH)Br CH3 H JnU 01. wb‡Pi †Kvb †h․MwU wMÖMbvW© weKviK bq? [JnU. 2005-06] A. Mg(OH)Br B. CH3MgBr C. CH3MgI D. CH3CH2MgBr mwVK DËi: A. Mg(OH)Br e¨vL¨v: wMÖMbvW© weKviK n‡jv A¨vjKvBj g¨vM‡bwkqvg n¨vjvBW| Mg(OH)Br GwU wMÖMbvW© weKviK bq| JU 01. wMÖMbvW© wewµqv n‡jv - [JU.2010-2011] A. CH3CH2I+NaOH (Rjxq)CH3CH2OH+NaI B. CH3CH2I+NaOH(&A¨vj‡Kvnjxq) CH2=CH2+HI C. 2CH3CH2I+2Na (ï®‥ B_vi) CH3CH2CH2CH3+2NaI D. CH3CH2I+Mg (ï®‥ B_vi)CH3CH2MgI mwVK DËi: D.CH3CH2I+Mg (ï®‥ B_vi)CH3CH2MgI e¨vL¨v: DUR© wewµqvq †mvwWqvg avZz Ges wMÖMbvW© wewµqvq g¨vM‡bwmqvg avZz e¨envi nq| 02. wfwmb¨vj WvBn¨vjvBW n‡jv- [JU.2010-2011] A. FCH2CH2CH2CH2F B. F2CHCH2CH3 C. H3CCHFCHFCH3 D.FCH3CH2CH2CHFCH3 mwVK DËi: C. H3CCHFCHFCH3 e¨vL¨v: n¨v‡jv‡RbØq GKB Kve©‡bi mv‡_ _vK‡j Zv‡K †Rg WvBn¨vjvBW Ges cvkvcvwk Kve©‡bi mv‡_ _vK‡j Zv‡K wfwmb¨vj WvBn¨vjvBW e‡j| 03. ? + CH3CH2MgBr (CH3CH2)2C(CH3)OH + Mg(OH)Br [JU-D. 2009-10] A. H3CCH2COCH3 B. H3CCH2COCH2CH3 C. H3CCH2(CH3)CHOH D. H3CCOCH3 mwVK DËi: A. H3CCH2COCH3 e¨vL¨v: H3CCH2COCH3 + CH3CH2MgBr (CH3CH2)2C(CH3)OH + Mg(OH)Br 04. CO2 Gi mv‡_ wb‡gœi †Kvb weKvi‡Ki wewµqvq ‣Re GwmW •Zwi K‡i? [JU.2009-10, RU. 2010-11, CU. 2003-04; BSMRSTU:2018-19] A. RX B. RCN C. RCOX D. RMgX mwVK DËi: D. RMgX e¨vL¨v: wMÖMbvW© weKviK‡K Kve©‡bkb I Av`ª©we‡kølY Ki‡j ‣Re GwmW cvIqv hvq| RMgX+CO2 H2O/H+ ––––– RCOOH 05. H3C–CH2–CO–CH3 +? H2O/H+ ––––– (CH3– CH2)2C(CH3)OH + Mg(HO)Br [JU.2009-2010] A. H3C-CH2-MgRr B.H3C-MgBr C. H2C2-CH-MgBr D. H2C-CH2(H3C)CH-MgBr mwVK DËi: B. H3C-MgBr e¨vL¨v: H3C – CH2 – CO – CH3 + H3C – MgBr H2O/H+ ––––– (CH3–CH2)2C(CH3)OH+Mg(HO)Br 06. Av‡qv‡Wvdig cixÿv Øviv wbgœwjwLZ †h․M kbv³KiY Kiv hvq bvt [JU 2009-10, JnU. 2013-14, BRU-D.2017-18] A. CH3OH B. CH3CHOHCH3 C. CH3–CH(CH3)–CH(OH)CH3 D. CH3CH2OH mwVK DËi: A. CH3OH 07. CH3Cl ‡K CH3OH G cwiYZ Ki‡Z e¨eüZ weKviK n‡jvt [JU.05-06] A. AlCl3/H2O B. ZnCl2/H2O C. Rjxq KOH D. NaNH2 mwVK DËi: C. Rjxq KOH e¨vL¨v: CH3Cl+KOH(aq)→CH3OH + KCl RU 01. Av‡qv‡Wvdig wewµqv †`q bv- [RU. 2017-18, JU. 2009-10] A. CH3COCH3 B. HCHO C. CH3CHO D. CH3CH2OH mwVK DËi: B. HCHO e¨vL¨v: ‡h mKj †h․‡M CH3–CO– ev, CH3–CH(OH)- g~jK we`¨gvb Zviv Av‡qv‡Wvdig wewµqv †`q| 02. wb‡Pi †KvbwU n¨v‡jvdig wewµqv †`q bv? [RU-H1.2017-18] A. CH3CH2O B. C6H5CHO C. CH3CHO D. CH3COCH3 mwVK DËi: B. C6H5CHO e¨vL¨v: †h mKj †h․‡M CH3-CO- ev CH3CH(OH)- g~jK we`¨gvb _v‡K ZvivB †Kej gvÎ n¨v‡jvdig wewµqv †`q| 03. wMÖMbvW© weKviK •Zwi‡Z †KvbwU AcÖ‡qvRbxq? [RU-H. 2013-14] A. RX B. Na C. ï®‥ B_vi D. Mg mwVK DËi: B. Na e¨vL¨v: A¨vjKvBj n¨vjvBW ï®‥ B_vixq `ªe‡Y g¨vM‡bwkqvg avZzi mv‡_ wewµqv K‡i •Zix K‡i wMÖMbvW© weKviK| Na avZzi cÖ‡qvRb †bB| 04. RX Gi mv‡_ Na, Mg avZzi wewµqvKv‡j `ªveKiƒ‡c e¨envi Ki‡Z nq- [RU. 2006-07] A. †K‡ivwmb B. ï®‥ B_vi C. A¨vj‡Kvnj D. wg_vbj mwVK DËi: B. ï®‥ B_vi e¨vL¨v: RX Gi mv‡_ Na, Mg avZzi wewµqvKv‡j `ªveKiƒ‡c e¨envi Ki‡Z nq ï®‥ B_vi| CU 01. wb‡Pi †Kvb& wewµqvi mvnv‡h¨ †Kvb †h․‡MCOCH3 Kvh©Kix MÖæ‡ci Dcw¯
wZ kbv³ Kiv hvq? [CU. 2014-15] A. wd«‡Wj-µvdUm& wewµqv B. K¨vwbRv‡iv wewµqv C. DU©R wewµqv D. n¨v‡jvdg© wewµqv E. †nj-†fvjnvU©-†Rwjb&w¯‥ wewµqv mwVK DËi: D. n¨v‡jvdg© wewµqv e¨vL¨v: n¨v‡jvdg© wewµqvq A¨vwm‡Uv g~jK _v‡K (COCH3) KU 01. wMÖMbvW© weKvi‡Ki mvnv‡h¨ †m‡KÛvix A¨vj‡Kvnj cÖ¯‧Z Ki‡Z cÖ‡qvRb nq? [KU. 2002-03] A. wK‡Uvb B. A¨vjwWnvBW C. digvjwWnvBW D. A¨vjKvBj n¨vjvBW mwVK DËi: B. A¨vjwWnvBW e¨vL¨v: digvjwWnvB‡Wi mv‡_ wMÖMbvW© weKvi‡Ki wewµqvq cÖvBgvix A¨vj‡Kvnj Ges B_vb¨v‡ji mv‡_ wMÖMbvW© weKvi‡Ki wewµqvq †m‡KÛvix A¨vj‡Kvnj •Zix nq| C=O+CH3MgBr H3C H C H3C H OMgX CH3 H2O H + H3CCOH+Mg(OH)Br CH3 H B_vb¨vj wMÖMbvW© weKviK †m‡KÛvix A¨vj‡Kvnj

584 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 02. †Kvb †h․MwU wMÖMbvW© weKvi‡Ki mwnZ wewµqv K‡i Uviwmqvix A¨vj‡Kvnj Drcbœ K‡i? [KU. 2001-02; MBSTU-C, 2013-14] A. digvjwWnvBW B. A¨vwmUvjwWnvBW C. †cÖvcvbvj D. A¨vwm‡Uvb mwVK DËi: D. A¨vwm‡Uvb e¨vL¨v: A¨vwm‡Uv‡bi mv‡_ wMÖMbvW© weKvi‡Ki wewµqvq Uviwmqvix A¨vj‡Kvnj Drcbœ nq| C=O+CH3MgBr H3C C H3C OMgXBr CH3 H2O H + H3CCOH+Mg(OH)Br CH3 A¨vwm‡Uvb wMÖMbvW© weKviK Uviwmqvix A¨vj‡Kvnj H3C H3C CH3 CoU 01. CH3CH2MgBr+(CH3)2CO H2O/H + ––––– Drcv`wU n‡e- [CoU-A. 2016-17] A. GwmW B. 3° A¨vj‡Kvnj C. 2° A¨vj‡Kvnj D. B_vi mwVK DËi: B. 3° A¨vj‡Kvnj e¨vL¨v: wMªMbvW© weKviK + wK‡Uvb 3 A¨vj‡Kvnj| BRU 01. wMÖMbvW© weKviK cvwbi ms¯ú‡k© Av`ª©we‡køwlZ n‡q Kx Drcbœ K‡i? [BRU-D. 2013-14] A. •Re GwmW B. 1-A¨vj‡Kvnj C. wK‡Uvb D. A¨vj‡Kb mwVK DËi: D. A¨vj‡Kb e¨vL¨v: wMÖMbvW© weKviK cvwbi ms¯ú‡k© Av`ª© we‡køwlZ n‡q Drcbœ K‡i A¨vj‡Kb| RMgX + OHH H2O H + RH + Mg(OH)X A¨vj‡Kb wMÖMbvW© weKviK cvwb 02. HCHO + CH3MgBr H2O + H+ ––––––– ? [BRU-F. 2013-14] A. CH3CHO B. CH3CH2OH C. CH3COOH D. CH3OCH3 mwVK DËi: B. CH3CH2OH e¨vL¨v: digvjwWnvB‡Wi mv‡_ wMÖMbvW© weKvi‡Ki wewµqvq B_vbj A_©vr cÖvBgvix A¨vj‡Kvnj •Zix nq| C=O+CH3MgBr H C OMgBr CH3 H2O H + HCOH + Mg(OH)Br CH3 digvjwWnvBW B_vbj H H H H 03. cÖvBgvix, †m‡KÛvix I Uviwmqvix A¨vj‡Kvnj cÖ¯‧Z Kiv hvq †h weKviK e¨envi K‡i? [BRU-F. 2012-13] A. Acetaldehyde B. Grignard reagent C. Fehling solution D. Schiff’s base mwVK DËi: B. Grignard reagent e¨vL¨v: wMÖMbvW© weKvi‡Ki mvnv‡h¨ digvjwWnvBW, B_vb¨vj I A¨vwm‡Uvb †_‡K h_vµ‡g cÖvBgvix, †m‡KÛvix I Uviwmqvix A¨vj‡Kvnj cÖ¯‧Z Kiv hvq| 04. †Kvb †h․‡Mi mwnZ wg_vBj g¨vM‡bwmqvg †eªvgvB‡Wi wewµqvi d‡j AvB‡mv †cÖvcvBj A¨vj‡Kvnj Drcbœ nq- [BRU-B, 2010-11] A. wg_vBj B. A¨vwmwUK A¨vwmW C. A¨vwmUvjwWnvBW D. A¨vwm‡Uvb mwVK DËi: C. A¨vwmUvjwWnvBW e¨vL¨v: A¨vwmUvjwWnvBW Gi mv‡_ wg_vBj g¨vM‡bwmqvg †eªvgvB‡Wi wewµqvi d‡j AvB‡mv †cÖvcvBj A¨vj‡Kvnj Drcbœ nq| BU 01. CH3MgX Gi mv‡_ wb‡gœi †Kvb †h․‡Mi wewµqvq AvB‡mv‡cÖvcvbj Drcbœ nq? [BU. 2015-16] A. HCHO B. CH3CHO C. CH3COCH3 D. CH3OH mwVK DËi: B. CH3CHO e¨vL¨v: MÖxMbvW© weKviK + digvjwWnvBW = 1° Alcohol MÖxMbvW© weKviK + digvjwWnvBW ev‡` Ab¨ †h †Kvb A¨vjwWnvBW = 2° Alcohol MÖxMbvW© weKviK + wK‡Uvb = 3° Alcohol STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION SUST 01. 2-†eªv‡gv-3-wg_vBj weD‡Ub‡K A¨vj‡KvnwjK KOH `ªe‡Y DËß Kiv n‡j †h Drcv` cvIqv hvq Zv‡K HBr Gi mv‡_ ms‡hvM wewµqv Kiv n‡j †Kvb †h․MwU Drcbœ Ki‡e? [SUST-B.2016-17] A. 2-†eªv‡gv-3-wg_vBjweD‡Ub B. 2-wg_vBj 3-†eªv‡gvweD‡Ub C. 2-†eªv‡gv-2-wg_vBjweD‡Ub D. 1-†eªv‡gv-1-wg_vBjweD‡Ub E. 1-†eªv‡gv‡c‡›Ub mwVK DËi: C.2-‡eªv‡gv -2-wg_vBjweD‡Ub e¨vL¨v: KOH (alc) H H CH H Br H3C HC HC C H 3 H3C – CH = 3 CH C CH 3 (mvq‡Rd) HBr H C H C C C H H H Br H CH 3 3 (gvK©wbKf) 02. wg_vBj g¨vM‡bwmqvg Av‡qvWvB‡Wi m‡½ †Kvb wewµqK wewµqv Ki‡j 2- wg_vBj‡cÖvcvbj-2 Drcbœ nq? [SUST 10-11] A. wg_vbvj B. B_vbvj C. weDUv‡bvb D. ‡cÖvcv‡bvb mwVK DËi: D. ‡cÖvcv‡bvb e¨vL¨v: ‡cÖvcv‡bvb Gi mv‡_ wg_vBj g¨vM‡bwmqvg Av‡qvWvBW wid¬v· Ki‡j 2- wg_vBj cÖcvbj-2 Drcbœ nq| 03. wMÖMbvW© weKvi‡Ki mv‡_ GKwU wK‡Uv‡bi wewµqv wK Drcbœ K‡i? [SUST 2009-2010] A. cÖvBgvix A¨vj‡Kvnj B. †m‡KÛvix A¨vj‡Kvnj C. Uviwkqvix A¨vj‡Kvnj D. GwmW mwVK DËi: C. Uviwkqvix A¨vj‡Kvnj e¨vL¨v: evsjv K_vq wMÖMbvW© weKviKwMÖMbvW© weKviK cvwb/A¨vj‡Kvnj ï®‥ eid/CO2 A¨vj‡Kb/m¤ú„³ nvB‡WªvKve©b •Re GwmW digvjwWnvBW 1 A¨vj‡Kvnj digvjwWnvBW e¨ZxZ Ab¨ †h †Kvb A¨vjwWnvBW 2 A¨vj‡Kvnj wK‡Uvb 3 A¨vj‡Kvnj GwmW n¨vjvBW wK‡Uvb JUST 01. †Kvb wewµqKwU n¨v‡jvdig wewµqv †`q bv? [JUST-B. 2016-17] A. CH3- CH2 -OH B. CH3-CHO C. CH3-CO-CH3 D. CH3-COOH mwVK DËi: D. CH3-COOH 02. CH3MgBr Gi mv‡_ cÖcv‡bvb-2 Gi wewµqvq Drcbœ †h․M‡K Av`ª© we‡kølY Ki‡j wb‡Pi †KvbwU cvIqv hvq? [JUST-A. 2012-13] A. CH3CH2COOH B. (CH3)3COH C. CH3CH(OH)CH3 D. CH3CH2CH2CH2OH

CHEMISTRY PLUS •Re imvqb 585 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES mwVK DËi: B. (CH3)3COH e¨vL¨v: CH3MgBr Gi mv‡_ cÖcv‡bvb-2 Gi wewµqvq Drcbœ †h․M‡K Av`ª© we‡kølY Ki‡j cvIqv hvq (CH3)3COH C=O+CH3MgBr H3C C H3C OMgXBr CH3 H2O H + H3CCOH+Mg(OH)Br CH3 cÖcv‡bvb wMÖMbvW© weKviK 2-wg_vBj †cÖvcvbj-2 H3C H3C CH3 MBSTU 01. wMÖMbvW© weKviK cÖ¯‧wZ‡Z AZ¨vek¨Kxq †KvbwU? [MBSTU-C. 2019-20] A. Al2O3 B. Abv`ª© AlCl3 C. ï®‥ B_vi D. THF mwVK DËi: C. ï®‥ B_vi 02. wMÖMbvW© weKviK nj- [MBSTU-A1.2017-18; DU.2001-02; JnU. 2009-10] A. (CH3)4Pb B. CH3MgCl C. CH3Cl D. (CH3)2Zn mwVK DËi: B. CH3MgCl e¨vL¨v: RMgX ev Ar/Ph-MgX nj wMÖMbvW© weKvi‡Ki mvaviY ms‡KZ| GLv‡b Ar = A¨vivBj g~jK Ges Ph = †dbjxq g~jK| 03. wb‡Pi †Kvb †h․MwU Av‡qv‡Wvdig Drcbœ K‡i? [MBSTU-B1.17-18; CU-G.16-17] A. CH3COCH3 B. CH3COOH C. CH3COCl D. CH3CONH2 mwVK DËi: A. CH3COCH3 e¨vL¨v: †h mKj †h․‡M CH3CO-ev CH3CH(OH)- g~jK we`¨gvb _vK‡e ZvivB n¨v‡jvdig wewµqv w`‡q _v‡K| 04. RMgX- ‡K B_vBj di‡g‡Ui m‡½ wewµqv NUv‡j wK Drcbœ nq? [MBSTU-A.2016-17] A. RCHO B. CH3CH2OR C. RCHOHC2OR D. C2H5OH mwVK DËi: A. RCHO e¨vL¨v: HCOOCH2CH3 + RMgx RCHO + CH3CHO B_vBj di‡gU A¨vjwWnvBW B_vb¨vj 05. wMÖMbvW© weKviK cÖ¯‧wZ‡Z `ªveK wnmv‡e e¨eüZ nq- [MBSTU-B. 2011-12] A. THF B. CS2 C. D. Abv`ª© AlCl3 mwVK DËi: A. THF e¨vL¨v: wMÖMbvW© weKviK cÖ¯‧wZ‡Z `ªveK wnmv‡e ï®‥ B_vi A_ev †UUªvnvB‡WªvwdDivb (THF) e¨envi Kiv hvq| PUST 01. HCHO I CH3CHO Gi g‡a¨ cv_©K¨ Kivi Rb¨ cÖ‡qvRb- [PUST-B.17-18] A. Iodoform test B. Carbylamine test C. Ninhydrin test D. Tollen’s mwVK DËi: A. Iodoform test e¨vL¨v: ‡h mKj †h․‡M CH3CO– g~jK we`¨gvb Zviv Iodoform wewµqv †`q| BSMRSTU 01. A¨vjKvBj n¨vjvBW Gi mwVK mwµqZvi µg †KvbwU? [BSMRSTU-A.2017-18; C.2016-17] A. RI > RCl > RBr B. RBr > RCl > Rl C. RI>RBr>RCl D. RC>Rl>RBr mwVK DËi: C. RI>RBr>RCl e¨vL¨v: n¨v‡jv‡R‡bv A¨vj‡K‡bi mwµqZv µg : R-I> R-Br > R-Cl HSTU 01. wg_vBj Av‡qvWvBW wg‡_b Drcbœ Ki‡Z †Kvb weRviK †hvM Ki‡Z n‡e? [HSTU-A.2016-17] A. Sn + HCl B. Zn + HCl C. Mn + HCl D. Fe + HCl mwVK DËi: A. Sn + HCl e¨vL¨v: CH3I + HCl Sn CH4 + SnCl2 + HI NSTU 01. †KvbwU Av‡qv‡Wvdg© wewµqv w`‡e? [NSTU-C. 2019-20] A. CH3CH2CH(OH)CH3 B. CH3CH2COCH2CH3 C. CH2CH2CO2C2H5 D. C6H5COCH2CH2 mwVK DËi: A. CH3CH2CH(OH)CH3 02. wb¤œ wjwLZ wewµqv Drcv`b P wPwýZ Ki? [NSTU-C. 2006-07] CH3CHO + CH3MgBr –––– ether Q H2O –– P + Mg(OH)Br A. CH3CH(OH)CH3 B. CH3CH2CH2OH C. CH3CH = CH2 D. CH3CH2CH3 mwVK DËi: B. CH3CH2CH2OH e¨vL¨v: P †h․MwU †cÖvcvbj-2(CH3CH(OH)CH3) C=O+CH3MgBr H3C C H3C OMgX CH3 H2O H + H3CCOH+Mg(OH)Br CH3 B_vb¨vj wMÖMbvW© weKviK †m‡KÛvix A¨vj‡Kvnj H H H STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION BUET 01. B_vbj‡K Av‡qv‡WvB‡_‡b cwiYZ Kivi me‡P‡q myweavRbK c×wZ n‡jv- [BUET 2005-06] A. Av‡qvwWb I B_vbj wid¬v· K‡i B. GwmWxq gva¨‡g B_vbj I cUvwmqvg Av‡qvWvBW wewµqv K‡i C. jvj dmdivm, B_vbj I Av‡qvwWb wid¬v· K‡i D. VvÛv Ae¯
vq B_vbj I Kcvi (I) Av‡qvWvBW wewµqv K‡i mwVK DËi: C. jvj dmdivm, B_vbj I Av‡qvwWb wid¬v· K‡i e¨vL¨v: Av‡qv‡Wvdig: 2P + 3I2 = 2PI3 PI3 + 3CH3CH2 – OH = 3CH3CH2-I + H3PO3 BUTex 01. wMÖMbvW© weKviK + RCHO x ; x †Kvb ai‡Yi †h․M? [BUTex. 2015-16, HSTU. 2017-18] A. Organic acid B. 3°alcohol C. 1°alcohol D. 2°alcohol mwVK DËi: D. 2°alcohol e¨vL¨v: wMÖMbvW© weKviK + wg_vb¨vj e¨wZZ Ab¨ †h †Kvb A¨vjwWnvBW 2 0 A¨vj‡Kvnj [wMÖMbvW© weKviK + RCHO 2°alcohol] Tex.Eng.Clg. 01. Which of the following compounds will not respond iodofrom test? [Tex.Eng.Clg. 2019-20] A. CH3CH2CH2OH B. CH3COC6H5 C. CH3CHOHCH3 D. CH3CH2OH mwVK DËi: A. CH3CH2CH2OH e¨vL¨v: Organic compounds having methy7l carbinol (CH3–CO–) group or group that would produce methyl carbinol upon oxidation (such as CH3 – C –) OH H will give haloform tests (of which iodoform is a kind). STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. wb‡Pi †Kvb ivmvqwbKwUi e¨envi mwVK? [MAT- 2018-19] A. Kve©b †UUªv‡K¬vivBW-KxUbvkK B. wWwWwU cvDWvi- AwMœwbe©vcK C. M¨vgvw·b- †PZbvbvkK D. 1,1,2 UªvB‡K¬v‡ivB‡_b-WªvBIqvk

586 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES mwVK DËi: D. 1, 1, 2 UªvB‡K¬v‡ivB‡_b-WªvBIqvk e¨vL¨v: †h․M e¨envi Kve©b †UUªv‡K¬vivBW AwMœwbev©cK wWwWwU KxUbvkK M¨vgvw·b KxUbvkK 1,1,2, UªvB †K¬v‡iv B‡_b WªvBIqvk †K¬v‡ivdig †PZbv bvkK CFC wngKviK 02. UªvB‡K¬v‡iv‡d¬v‡ivwg‡_b M¨v‡mi D‡jøL‡hvM¨ ag© bq †KvbwU? [MAT 13-14] A. myw¯
Z B. welv³ C. A`vn¨ D. cvwb‡Z A`ªeYxq mwVK DËi: B. welv³ e¨vL¨v: wd«qbm Gi •ewkó¨: A`vn¨ M¨vmxq c`v_© wbgœ ùzUbvsK wewkó| Awelv³ Zij c`v_© cvwb‡Z A`ªeYxq ¯
vqx †h․M| 03. Kÿ ZvcgvÎvq wb‡¤œi †KvbwUi †f․Z Ae¯
v Zij? [MAT. 2013-14] A. CH3Cl B. CH2Br C. CHCl3 D. H3CCH2F mwVK DËi: C. CHCl3 04. wb‡¤œi †KvbwU DËg AwMœ wbe©vcK? [MAT. 2010-11] A. CCl4 B. CHCl2CHCl2 C. CBr2ClF2 D. CHCl = CCl2 mwVK DËi: A. CCl4 05. UªvB‡K¬v‡iv wg‡_b wb‡¤œi †Kvb Kv‡R e¨eüZ nq? [MAT. 2002-03, 2000-01] A. KxUbvkK B. †PZbvbvkK C. wngKviK D. AwMœwbe©vcK mwVK DËi: B. †PZbvbvkK 06. A¨vjKvBj n¨vjvBW‡K- CN Øviv cÖwZ¯
vwcZ Ki‡j- [MAT. 2001-02] A. A¨vjKvBj mvqvbvB‡W 1wU Kve©b msL¨v n«vm cvq B. AvB‡mv mvqvbvB‡W Kve©b msL¨v wbw`©ó _v‡K C. A¨vjKvBj mvqvbvB‡W 1wU Kve©b msL¨v e„w× cvq D. AvB‡mv mvqvbvB‡W 1wU Kve©b msL¨v n«vm cvq mwVK DËi: C. A¨vjKvBj mvqvbvB‡W 1wU Kve©b msL¨v e„w× cvq 07. Uviwkqvix n¨vjvBW †KvbwU? [MAT 2003-2004] A. R2CH B. R2CHX C. R3 C- X D. RCH2X mwVK DËi: C. R3 C- X DAT 01. wb‡¤œi †Kvb nvB‡WªvKve©bwU wPwKrmv weÁv‡b †PZbvbvkK wn‡m‡e e¨eüZ nq? [DAT. 2010-11] A. CCl2F B. CF3CHBrCl C. CHCl = CCl2 D. CClF2CClF2 mwVK DËi: B. CF3CHBrCl PART 05 †K¬v‡ivdig m¤úwK©Z Z_¨vewj Item- 01: †K¬v‡ivdi‡gi †f․Z ag©: mvaviY Zvc I Pv‡c †K¬v‡ivdig eY©nxb wgwó MÜhy³ GKwU Zij c`v_©| ùzUbvsK 61oC (&nK-Kwei 62°C) cvwb‡Z Lye mvgvb¨ `ªexf~Z nq| wKš‧ A¨vj‡Kvnj, B_v‡i mn‡RB `ªeYxq| 15oC ZvcgvÎvq Av‡cwÿK ¸iæZ¡ 1.5 Item- 02: †K¬v‡ivdi‡gi cÖ¯‧wZ I wewµqv ** * **

CHEMISTRY PLUS •Re imvqb 587 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES Item- 03: †K¬v‡ivdi‡gi e¨envitÑ ‡K¬v‡ivdi‡gi GKvwaK e¨envi i‡q‡Q| †hgbtÑ (i) †PZbvbvkK wn‡m‡e| (ii) Pwe©, †Zj, †gvg, ivevi cÖf…wZi wb®‥vkb •Re `ªveK wn‡m‡e| (iii) cixÿvMv‡i weKviK wn‡m‡e (we‡kl K‡i O2 kbv³Ki‡Y)| (iv) Kuv`y‡b M¨v‡mi g~j Dcv`vb †K¬v‡ivwcwµb Drcv`‡b| (v) dvsMv‡mi eske„w× †iva Ki‡Z| (vi) •Re †h․M ms‡kølY| (vii) `yM©Ühy³ Jla‡K myMÜgq Ki‡Z| (viii) cPb wbeviKiƒ‡c- †K¬v‡ivdig Dw™¢¾ K¡v_ msiÿ‡Y e¨eüZ nq| ÿwZKi w`K: (i) Liver Gi ÿwZ K‡i I (ii) K¨vÝvi m„wói cÖeYZv| -t Z_¨ KwYKv: (HOT NEWS GALLERY) t- Kvwe©j A¨vwgb wewµqv 1 A¨vwgb I †K¬v‡ivd‡g©i kbv³Kvix cixÿv| †K¬v‡ivdg© wec`gy³ e¨env‡ii Rb¨ 1% B_vbj †hvM Kiv nq| †K¬v‡ivd‡g©i cvk¦©cÖwZwµqvi Kvi‡Y †PZbvbvkK wn‡m‡e †d¬v‡_b e¨envi Kiv nq| SAQ: [Short Answer Question] cÖkœ-01: †K¬v‡ivdig (CHCl3) †K ev`vwg †evZ‡j ivLv nq †Kb? [h.‡ev. 2017; Xv.‡ev. 2016]] DËi: †K¬v‡ivdig‡K iw½b Kv‡Pi †evZ‡j ivLv nq KviY Av‡jvi ms¯ú‡k© Avm‡Z cv‡i bv d‡j welv³ dmwRb M¨vmI ‣Zwi nq bv| AgCl Gi mv`v Aat‡ÿc CHCl3 Gi Aweï×Zvi cÖgvY| HCl+AgNO3AgCl+HNO3 REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION JnU 01. m¤cÖwZ e¨vcK e¨eüZ (n¨v‡jv‡R‡bv A¨vj‡Kb) d¬z‡_b GKwU- [JnU 09-10] A. KxUbvkK B. †PZbvbvkK C. wngvqK D. AwMœwbe©vcK mwVK DËi: B. †PZbvbvkK e¨vL¨v: †K¬v‡ivdi‡gi wjfv‡i welv³KiY I K¨vÝvi m„wói cÖeYZvi Kvi‡Y eZ©gv‡b AZ¨vaywbK †PZbv bvkK wn‡m‡e d¬z‡_b e¨eüZ nq| 02. †K¬vwi‡Uvb wK wnmv‡e e¨en«Z nq? [JnU 2009-2010] A. D‡ËRK B. KxUbvkK C. ‡PZbvbvkK D. AwMœwbev©cK mwVK DËi: C. ‡PZbvbvkK e¨vL¨v: 1,1,1-UªvB‡K¬v‡iv-2-wg_vBj cÖcvbj-2 †K †K¬vwi‡Uvb e‡j| Bnv †PZbv bvkK I Ny‡gi Jlya wn‡m‡e e¨eüZ nq| 03. †K¬v‡ivdig& Db¥y³ ivL‡j †Kvb M¨vm Drcbœ nq? [JnU 2008-2009] A. CCl4 B. COCl2 C. Cl3–NO2 D. COCl2(HNO3) mwVK DËi: B. COCl2 e¨vL¨v: ‡K¬v‡ivdig‡K evZv‡m Db¥³ ivL‡j welv³ dmwRb M¨vm •Zix nq| 2CHCl3 + O2 RviY 2COCl2 + 2HCl 04. CHCl3 wec`gy³ e¨env‡ii Rb¨ wK wgkv‡bv nq? [JnU 06-07, RU. 2009-10] A. B_vbj B. wg_vbj C. H2SO4 D. NaOH mwVK DËi: A. B_vbj e¨vL¨v: CHCl3 wec`gy³ e¨env‡ii Rb¨ †K¬v‡ivdi‡gi mv‡_ 1% B_vbj †hvM Kiv nq| KLbI CHCl3 RvwiZ n‡q dm&wRb M¨vm Drcbœ n‡jI Zv A¨vj‡Kvn‡ji mv‡_ AÿwZKi B_vBj Kve©‡b‡U cwiYZ nq| Giƒ‡c B_vbj CHCl3 †K wec` gy³ iv‡L| 05. †K¬v‡ivdi‡gi Aw¯ÍZ¡ cÖgvY Kiv hvq †Kvb cixÿvi mvnv‡h¨? [JnU 2005-06] A. AvB‡mvmvqvbvBW B. †K¬vwi‡bkb C. Av`ª© we‡kølY D. weRviY cixÿvi mvnv‡h¨ mwVK DËi: A. AvB‡mvmvqvbvBW e¨vL¨v: †K¬v‡ivdi‡gi Aw¯ÍZ¡ cÖgvY Kiv hvq Kvwe©j A¨vwgb †U÷ ev cÖvBgvix A¨vwgb kbv³KiY ev AvB‡mv mvqvbvBW cixÿvi gva¨‡g| AvB‡mv mvqvbvBW Zxeª DrKU MÜhy³| JU 01. dmwRb Gi ms‡KZ †KvbwU? [JU-D,Set-C: 2018-19, SUST. 2011-12] A.CHl3 B. CCl4 C. COCl D. COCl2 mwVK DËi: D. COCl2 e¨vL¨v: ‡h․M ms‡KZ ‡K¬v‡ivdig CHCl3 ‡K¬v‡ivwcwµb CCl3NO2 cvBwib CCl4 dmwRb COCl2 KU 01. Av‡jv I evqyi Dcw¯
wZ‡Z †K¬v‡ivdig Drcbœ K‡i- [KU. 2014-15] A. †K¬vivj B. Kve©wbj †K¬vivBW C. weøwPs cvDWvi D. Kve©b-†UUªv-†K¬vivBW mwVK DËi: B. Kve©wbj †K¬vivBW STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION BSMRSTU 01. Kuv`y‡b M¨v‡mi cÖavb Dcv`vb wK? [BSMRSTU-H. 2019-20] A. †K¬v‡ivwcwµb B. dmwRb C. †K¬v‡ivdg© D. bvBUªvm M¨vm mwVK DËi: A. †K¬v‡ivwcwµb e¨vL¨v: Kuv`y‡b M¨v‡mi ivmvqwbK bvg- bvB‡Uªv‡K¬v‡ivdg© (CCl3NO2)| Bnv •Zj RvZxq c`v_© Ges AkÖæ Drcv`K e‡j Kuv`y‡b M¨vm †m‡j GwU e¨eüZ nq| Gi ùzUbvsK 112C| 02. †K¬v‡ivdi‡gi weï×Zv cixÿvq wewµqv N‡U †Kvb wewµq‡Ki g‡a¨? [BSMRSTU-B.2017-18] A. CHCl3 + AgNO3 B. HCl + AgNO3 C. HCl + Ba(NO3)2 D. CHCl3 + Ba(NO3)2 mwVK DËi: B. HCl + AgNO3 e¨vL¨v: Aweï× CHCl3 Gi mv‡_ AgNO3Gi wewµqvCHCl3+O2(g) Av‡jv ––– 2COCl2(g)+2HCl(g) HCl(g)+AgNO3 mv`v Aat‡ÿc ––––––––– AgCl(s) + HNO3(aq)

588 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 03. †K¬v‡ivdig AYy‡Z †K¬vwib cigvYyi Aw¯ÍZ¡ cÖgvY Kiv hvq wK Øviv? [BSMRSTU.Ka. 2016-17] A. AgNO3 B. BaCl2 C. PbSO4 D. ‡bmjvi `ªeY Øviv mwVK DËi: A. AgNO3 e¨vL¨v: †K¬v‡ivdig kbv³Ki‡Y 1-2 †dvUv AgNO3 e¨envi Kiv nq| hw` mv`v Aat‡ÿc c‡o Z‡e †K¬v‡ivdig Aweï×| †R‡b ivLv fv‡jv weï× †K¬v‡ivdig AgNO3 `ªe‡Yi mv‡_ †Kvb Aat‡ÿc †`q bv| NSTU 01. †K¬v‡ivdg© •Zwii Ab¨Zg KuvPvgvj †KvbwU? [NSTU-A. 2019-20] A. †K¬vwib B. †mvwWqvg nvB‡Wªv·vBW C. weøwPs cvDWvi D. K¨vjwmqvg Kve©‡bU mwVK DËi: C. weøwPs cvDWvi STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION BUTex 01. Kvu`y‡b M¨v‡mi cÖavb Dcv`vb nj- [BUTex-2016-17;CU.2006-07, JnU.2010-11; BSMRSTU-H.2019-20] A. Chloropicrin B. Phosgene C. Chloriton D. Methane mwVK DËi: A. Chloropicrin STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. UªvB‡K¬v‡ivwg‡_b †Kvb Kv‡R e¨eüZ nq? [MAT 2002-03; JnU-2009-10] A. KxUbvkK B. †PZbv bvkK C. nxgKviK D. AwMœwbe©vcK mwVK DËi: B. †PZbv bvkK e¨vL¨v: †K¬v‡ivdi‡gi (UªvB‡K¬v‡iv wg‡_b) e¨envi : †K¬v‡ivdi‡gi GKvwaK e¨envi i‡q‡Q| †hgb1) †PZbvbvkK, 2) `ªveK, 3) cPb wbeviK, 4) `ªveK I weKviK Ges 5) Kv`yu‡b M¨vm (†K¬v‡ivwcKwib) iæ‡c GwU e¨eüZ nq| PART 06 A¨vj‡Kvnj m¤úwK©Z Z_¨vewj Item-01: A¨vj‡Kvn‡ji cÖv_wgK K_v : A¨vj‡Kvnj A¤øxq †¯‥‡j cÖvq wbi‡cÿ ev Dfag©x c`v_©| nvB‡WªvKve©‡bi †P‡q ùzUbvsK †ewk| A¨vj‡Kvn‡ji Zzjbvq HCl, H2SO4, 1015 ‡_‡K 1020 ¸Y A¤øxq| Item-02: A¨vj‡Kvn‡ji †kÖwYweb¨vm I D`vniY: A¨vj‡Kvn‡ji †kÖYxwefvM MVb Abymv‡i Alephatic Aro matic eÜb cÖK…wZ Abymv‡i m¤ú„³ Am¤ú„³ OH g~j‡Ki Ae¯
vb Abymv‡i g‡bvnvBwWªK 1 2 3 OH g~j‡Ki Ae¯
v Abymv‡i WvBnvBwWªK UªvBnvBwWªK cwjnvBwWªK GKK eÜb (CH3CH2CH2OH) wØ ev wÎ-eÜb [A¨vjvBj A¨vj‡Kvnj] (CH2 = CHCH2OH) CH3CH2OH Bw_wjb MøvBKj wMømvij ev wMømvwib miweUj ev †gwbUj CH2CH2 OH OH CH2CHCH2 OH OH OH CH2CHCHCHCHCH2 OH OH OH OH OH OH COH H H COH H COH dvi‡g‡›Ukb ev MuvRb ev LvgxKiY ev mÜvb wµqv ev †PvjvBKiY cÖwµqvq A¨vj‡Kvnj Drcv`‡b GbRvBgmg~n: ÷vP© †_‡K B_vbj •Zix‡Z cÖ‡qvRbxq GbRvBgt wPUv¸o †_‡K B_vbj •Zix‡Z GbRvBgt Rv gv B Pj Rv B RvB‡gR g¨vj‡UR Bbfv‡U©R wPUv¸o RvB‡gR Bbfv‡U©R †`‡ki kxl© K…wlwe`‡`i mgwš^Z cÖqvm... weÁvb I cÖhyw³ wek^we`¨vj‡qi Rb¨... NETWORK [mKj K…wl wek^we`¨vjq fwZ© mnvwqKv NETWORK [weÁvb I cÖhyw³ wek^we`¨vjq fwZ© mnvwqKv

CHEMISTRY PLUS •Re imvqb 589 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES Item-03: A¨vj‡Kvn‡ji cÖ¯‧wZ, kbv³KiY I ivmvqwbK wewµqv : jyKvm weKviK KwZcq evwYwR¨K A¨vj‡Kvnj: A¨vj‡Kvnj mshyw³ e¨envi †iKwUdvBW w¯úwiU 95.6% B_vbj + 4.4% cvwb| cixÿvMv‡i| wgw_‡j‡UW w¯úwiU wW‡bPviW A¨vj‡Kvnj 95.6% B_vbj + welv³ 5-10% wg_vbj + 3% †ebwRb I b¨vc_v, `yM©Ühy³ wcwiwWb| wk‡í evwb©‡ki Kv‡R| cvIqvi A¨vj‡Kvnj weï× B_vbj + †ebwRb + †c‡Uªvj| Zvckw³ Drcv`b| cÖæc w¯úwiU 57.1% weï× B_vbj + 42.9% cvwb| Avg`vbxK…Z A¨vj‡Kvn‡ji NbgvÎv wbY©‡q| DW w¯úwiU 98% wg_vbj + 1-2% A¨vwm‡Uvb| - wgbvivj b¨vc_v w¯úwiU 90% †iKwUdvBW w¯úwiU + 9% wg_vbj + 1% †c‡Uªvj| w¯úwiU is, R¡vjvwb| evwYwR¨K wgw_‡j‡UW w¯úwiU 95% †iKwUdvBW w¯úwiU + 5% wg_vbj| evwb©‡ki `ªveK I R¡vjvwb| cig A¨vj‡Kvnj (Absolute Alcohol) 99.5% B_vBj A¨vj‡Kvnj| wewfbœ ivmvqwbK †h․M cÖ¯‧wZ‡Z| ivwes A¨vj‡Kvnj 70% AvB‡mv †cÖvcvBj A¨vj‡Kvnj| Wv³vix hš¿cvwZ cwi®‥vi|

590 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES A¨vj‡Kvnjxq cvbxq: cvbx‡qi bvg Drm mshyw³ weqvi evwj©, Pvj cÖf…wZ| 2-7% k¨v‡¤úb Av½yi I Ab¨vb¨ d‡ji im| 15-16% IqvBb Av½yi I Av‡cj| 12% ûBw¯‥, eªvwÛ, ivg, wRb †bkv D‡`ªKKvix evwYwR¨K g`| 30-50% A¨vj‡Kvn‡ji cv_©K¨KiY: A¨vj‡Kvnj wWMÖx Abymv‡i jyKvm weKviK Mvp (HCl + Abv`ª© ZnCl2) RviY wWnvBwWª‡R‡kb 1 Kÿ ZvcgvÎvq †Kvb wewµqv †`q bv, DËß Ki‡j wewµqv †`q| cÖ_‡g A¨vjwWnvBW I c‡i GwmW Drcbœ nq| B_vb¨vj + H2 Drcbœ nq| 2 5-10 wgwbU ci Aat‡ÿc c‡o| cÖ_‡g GKB Kve©b msL¨K wK‡Uvb I c‡i 1 Kg Kve©b msL¨K •Re GwmW Drcbœ nq| wK‡Uvb + H2 Drcbœ nq| 3 mv‡_ mv‡_ Aat‡ÿc c‡o| cÖ_‡g 1 Kg Kve©bhy³ wK‡Uvb, c‡i Av‡iv 2 Kg Kve©bhy³ GwmW Drcbœ nq| A¨vjwKb + H2O Drcbœ nq| -t Rvbv ARvbv tcwjnvBwWªK A¨vj‡Kvnjmg~n Moisturizing Agent iƒ‡c †Pv‡Li Wªc (†Pv‡Li dryness Gi Rb¨) Ges w¯‥‡bi wewfbœ wµg •Zwi‡Z e¨eüZ nq| Kb‡dKkbvix‡Z wgwóKviK wn‡m‡e e¨eüZ nq, Wv³vix hš¿cvwZ cwi®‥vi Ki‡b e¨envi Kiv nq| 70% B_vbj I 30% cvwbi wgkÖY A¨vw›U‡mcwUK wn‡m‡e e¨eüZ nq| -t Z_¨ KwYKv (HOT NEWS) t- B_vbj cvwb‡Z `ªeYxq A_P B‡_b A`ªeYxq| A¨vj‡Kvn‡ji ùzUbv¼ mgKve©b wewkó A¨vj‡Kb I B_vi A‡cÿv †ewk| †Kv‡bv †h․‡M A¨vjKvBj MÖæ‡ci †P‡q OH MÖæ‡ci msL¨v †ewk n‡j †m †h․M cvwb‡Z `ªexf~Z nq| †hgb- wPwb Ges K‡qKwU ÷vP© cvwb‡Z `ªeYxq| A¨vj‡Kvn‡ji Rvi‡Y K2Cr2O7/H2SO4 Gi Zzjbvq Na2Cr2O7/H2SO4 e¨envi myweavRbK| A¨vj‡Kvnj‡K wbiæw`Z K‡i A¨vjwKb cÖ¯‧wZ‡Z Mvp H2SO4 e¨envi Kiv nq wKš‧ HCl e¨envi Kiv nq bv| ¯^vfvweK ZvcgvÎvq Uviwkqvwi A¨vj‡Kvn‡j jyKvm weKviK †hvM Kivi m‡½ m‡½ `ªeY †Nvjv‡U nq wKš‧ cÖvBgvwi A¨vj‡Kvn‡ji †ÿ‡Î ¯^”Q _v‡K| Short Ans Question SAQWRITTEN SUGGESTION BAQ Broad Ans Question cÖkœ-01: D`vniYmn A¨vj‡Kvnj †kÖwYwefvM Av‡jvPbv Ki| G÷v‡ii Av`ª© we‡køl‡Y Kx cvIqv hvq? [PUST. 2019-20] e¨vL¨v: A¨vj‡Kvnj †kÖwYwefvM: cÖvBgvwi A¨vj‡Kvnj (1): –OH g~jKhy³ Kve©‡b `ywU nvB‡Wªv‡Rb _v‡K| †hgb- CH3CH2OH. †m‡KÛvwi (2) A¨vj‡Kvnj: –OH g~jKhy³ Kve©‡b 1wU nvB‡Wªv‡Rb _v‡K| †hgb : CH2– CH – | CH2 OH. Uviwkqvix (3) A¨vj‡Kvnj: –OH g~jKhy³ Kve©‡b †Kvb nvB‡Wªv‡Rb _v‡K bv| †hgb : (CH3)3C – OH. G÷v‡ii Av`ª© we‡køl‡Y Kve©w·wjK GwmW I A¨vj‡Kvnj cvIqv hvq| R –C || O –O – R + H – OH R – C || O – O – H + R– O – H cÖkœ-02: weDUvbj-2 Gi `ywU wewµqv wb¤œiƒc: X Oxidizing agent ––––––––––––– acid CH3CH2CH(OH)CH3 Conc.H3PO4 ––––––––– Y [BUET. 2019-20] (a) X •Re †h․‡Mi bvg I MvVwbK ms‡KZ wjL| DËi: O || CH3CH2CCH3 [weDUv‡bvb-2] (b) X †h․M •Zixi mwVK RviK I Gwm‡Wi bvg wjL| DËi: RviK- K2Cr2O7, GwmW- H2SO4 (c) Y `ywU AvB‡mvgv‡ii wgkÖY| G‡`i MvVwbK ms‡KZ wjL| DËi: bvg ms‡KZ weDwUb-1 CH3CH2CH=CH2 weDwUb-2 CH3CH=CHCH3

CHEMISTRY PLUS •Re imvqb 591 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES cÖkœ-03: ivmvqwbK wewµqv¸‡jv m¤ú~Y© Ki: C2H5OH + COCl2 – ? [KUET. 2019-20] DËi: C2H5OH + COCl2 (C2H5)2CO3 + 2HCl cÖkœ-04: M¨v‡mvnj wK? [BUET. 2001-02] DËi: M¨v‡mvnj = M¨v‡mvwjb + A¨vj‡Kvnj| cvIqvi A¨vj‡Kvnj ev R¡vjvbx wnmv‡e e¨envi Kiv nq| cÖkœ-05: IqvUvi-M¨vm wK? IqvUvi M¨vm †_‡K wg_vbj •Zwii ivmvqwbK mgxKiY wjL| [RUET. 2005-06] DËi: IqvUvi-M¨vm = [CO + H2] ;[CO + H2] + H2 ZnO.Cr2O3 ––––––––––– 350C 250 atm CH3OH cÖkœ-06: jyKvm weKviK Kx? [Xv.‡ev. 2016; P.‡ev. 2017, 2019; Kz.‡ev. 2017; w`.‡ev. 2019] DËi: Abv`ª© ZnCl2 + Mvp HCl Gi wgkÖY‡K ejv nq jyKvm weKviK| cÖkœ-07: A¨vj‡Kvnj (B_vbj) cvwb‡Z `ªeYxq †Kb, Zv e¨vL¨v Ki| [Awfbœ cÖkœ 2018; h.‡ev. 2016] DËi: Hints : B_vbj nvB‡Wªv‡Rb eÜb •Zwi K‡i| cÖkœ-08: A [O] –––––––––––– K2Cr2O7+H2SO4 B C2H5MgI –––––––– HCl(dil) C jyKvmweKviK –––––––– D (mv`v Aat†ÿc 5 – 10 wgwbU ci) wewµqvwU c~Y© Ki| [BUTex. 2018-19] DËi : CH3CH2OH [O] –––––––––––– K2Cr2O7+H2SO4 CH3CH O C2H5MgI HCl (dil) CH3CHC2H5 OH jyKvm weKviK CH3CHC2H5 Cl REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION DU 01. †Kvb †h․MwU Rjxq NaOH Gi m‡½ wewµqv Ki‡e bv? [DU-A:2018-19] A. C2H5OH B. C6H5OH C. C6H5COOH D. C2H5COOH mwVK DËi: A. C2H5OH 02. †h․M X, C6H12O, A¤øxq Na2Cr2O7 Øviv RvwiZ n‡q Y †h․M nq| Y †h․MwU Aí cwigvY Nb H2SO4 Gi Dcw¯
wZ‡Z B_vb‡ji m‡½ wewµqv K‡i Z †h․M •Zwi K‡i| Z Gi ms‡KZ Kx? [DU,Unit-A:2018-19] A. CH3(CH2)2CH =CH CO2H B. CH3(CH2)4CH2COCH2CH3 C. CH3(CH2)4CO2CH2CH3 D. CH3CH2CO2(CH2)4CH3 mwVK DËi: C. CH3(CH2)4CO2CH2CH3 e¨vL¨v: CH3(CH2)4CHO+[O] Na2Cr2O7 ––––––– CH3(CH2)4COOH X Y CH3(CH2)4COOH+C2H5OH H2SO4 CH3(CH2)4COOC2CH2CH3 03. gy³ wkKj KvVv‡gvhy³ Møy‡KvR AYy‡Z KqwU ‡m‡KÛvwi A¨vj‡Kvnjxq MÖæc Av‡Q? [DU-Ka.2016-17] A. 3 B. 4 C. 5 D. 6 mwVK DËi: B. 4 04. jyKvm weKvi‡Ki mv‡_ ZvrÿwYK wewµqv K‡i ‡KvbwU? [DU-Ka. 2015-16] A. Butan-1-ol B. Butan-2-ol C. 2-methylpropan-1-ol D. 2-methylpropan-2-ol mwVK DËi: D. 2-methylpropan-2-ol e¨vL¨v: jyKvm weKviK Øviv 1 0 , 20 I 3 0 A¨vj‡Kvn‡ji cv_©K¨ wbY©q Kiv nq| G‡`i wewµqv µg n‡”Q 3 0 > 20 > 10 Mvp HCl + Abv`ª© ZnCl2 †K jyKvm weKviK ejv nq| 05. †dbj I A¨vj‡Kvnj Df‡qi Rb¨ wb‡¤œi †KvbwU mZ¨? [DU. 2013-14] A. PCl5 Gi mv‡_ wewµqv K‡i B. ivBgvi UvBg¨vb wewµqv cÖ`k©b K‡i C. Br2 cvwbi mv‡_ wewµqv K‡i D. jyKvm weKvi‡Ki mv‡_ wewµqv K‡i mwVK DËi: A. PCl5 Gi mv‡_ wewµqv K‡i e¨vL¨v: †dbj Br2 cvwbi mv‡_ wewµqv K‡i Ges ivBgvi UvBg¨vb wewµqv cÖ`k©b K‡i| jyKvm weKvi‡Ki mvnv‡h¨ A¨vwj‡dwUK A¨vj‡Kvnjmg~n cv_©K¨ Kiv nq| wKš‧ †dbj I A¨vj‡Kvnj DfqB PCl5 Gi mv‡_ wewµqv K‡i HCl •Zix K‡i| 06. wb‡Pi †KvbwU ZvrÿwYKfv‡e jyKvm wewµqv †`q? [DU. 2007-2008] A. CH3OH B. CH3CH(OH)CH3 C. CH3C(CH3)2–OH D. CH3COCH3 mwVK DËi: C. CH3C(CH3)2–OH e¨vL¨v: jyKvm weKviK cixÿv- (Mvp HCl + Abv`©ª ZnCl2) jyKvm weKviK| 3 alcohol + jyKvm weKviK m‡½ m‡½ mv`v Aat†ÿc 2 alcohol + jyKvm weKviK 5-10 wgwb‡U mv`v Aat†ÿc 1 alcohol + jyKvm weKviK Kÿ ZvcgvÎvq †Kvb wewµqv nq bv| 07. jyKvm weKviK †KvbwUi mv‡_ wewµqv K‡i bv? [DU. 2005-06, RU. 09-10] A. CH3-CH2OH B. CH(CH3)2-OOH C. C(CH3)OH D. CH3 – CH – CH – OH mwVK DËi: A. CH3-CH2OH 08. PCl5 Ges B_vBj A¨vj‡Kvn‡ji wewµqvq †KvbwU Drcbœ nq? [DU. 2004-2005; RU.2007-08] A. Acetyle chloride B. Ethyle chloride C. Ethane D. Diethyl ether mwVK DËi: B. Ethyle chloride e¨vL¨v: PCl5 + C2H5OH C2H5Cl + POCl3 + HCl 09. Starch Stage-1 ––––– Simple sugar Stage-2 ––––– ethanol ÷vP© †_‡K B_vbj •Zwii GKwU c×wZ| ch©vq `ywU eySv‡Z †Kvb kã hyMj e¨envi Kiv nq? [DU. 2002-03] A. Cracking B. Fermentation C. Hydrolysis D. Polymerization mwVK DËi: B. Fermentation e¨vL¨v: dv‡g©‡›Ukb cÖwµqvq ÷vP© †_‡K Møy‡KvR Ges c‡i Møy‡KvR †_‡K B_vb‡ji wk‡ívrcv`b Kiv nq| JnU 01. jyKvm weKviK Øviv †KvbwU kbv³ Kiv nq? [JnU. 2015-16, JU. 2013-14, RU. 2017-18, 2009-10, DU.P-2019-20, JUST:2018-19, HSTU:2019-20] A. A¨vj‡Kvnj B. A¨vwgb C. A¨vjwWnvBW D. wK‡Uvb mwVK DËi: A. A¨vj‡Kvnj e¨vL¨v: Mvp HCl Ges Abv`©ª ZnCl2 Gi `ªeY‡K jyKvm weKviK e‡j| jyKvm weKviK Øviv 1 0 , 20 I 3 0 A¨vj‡Kvn‡ji g‡a¨ cv_©K¨ Kiv nq| wKš‧ A¨vj‡Kvnj kbv³ Kiv hvq bv| A¨vj‡Kvnj kbv³ Ki‡Y e¨envi Kiv nq avZe Na, PCl5, PCl3 , SO2|

592 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 02. jyKvm weKviK e¨envi Kiv nq †Kb? [JnU 2012-13, RU. 2013-14] A. GwmW kbv³ Ki‡Z B. A¨vj‡Kvnj kbv³ Ki‡Z C. GjwWnvBW kbv³ Ki‡Z D. wK‡Uvb kbv³ Ki‡Z mwVK DËi: B. A¨vj‡Kvnj kbv³ Ki‡Z e¨vL¨v: jyKvm weKviK A¨vj‡Kvnj cv_©K¨Ki‡Y e¨eüZ nq| 03. gv‡K©i cvinvBWªj †KvbwU? [JnU 2012-13, HSTU. 2012-13, CU. 2012-13] A. 10% HCl B. 20% H2O2 C. 40% H2SO4 D. 30% H2O2 mwVK DËi: D. 30% H2O2 04. jyKvm weKvi‡Ki mv‡_ cÖvBgvix (1), †m‡KÛvix (2) Ges Uviwmqvix (3) A¨vj‡Kvn‡ji wewµqvi mwµqZvi µg †KvbwU? [JnU. 06-07, CoU. 13-14] A. 1>2>3 B. 2>3>1 C. 3>2>1 D. 3>1>2 mwVK DËi: C. 3>2>1 e¨vL¨v: A¨vj‡Kvn‡ji KwZcq µg- A¤øag©xZv- 1 A¨vj‡Kvnj >2 A¨vj‡Kvnj >3 A¨vj‡Kvnj A¨vj‡Kvn‡ji wbiæ`b µg njt3>2>1 A¨vj‡Kvnj| mwµqZv- 3>2>1 Alcohol JU 01. †KvbwU wk퇶‡Î wg_vbj Drcv`‡b cÖfveK wn‡m‡e KvR K‡i? [JU-D, Set-A. 2019-20,A-2014-15] A. Pt A_ev V2O5 B. Pt Ges Rh C. CO A_ev Al2O3 D. ZnO Ges Cr2O3 mwVK DËi: D. ZnO Ges Cr2O3 e¨vL¨v: [CO + H2] + H2 ZnO Cr2O3 –––––––––– 300 200 atm CH3OH 02. A¨vj‡Kvnj Øviv cwi®‥vi Kiv nqi. A¨v‡gvwbqvg nvB‡Wvª·vBW ii. wMÖR iii. †Zj- †KvbwU mwVK? [JU-A1.2017-18] A. i I ii B. i I iii C. ii I iii D. i, ii I ii mwVK DËi: C. ii I iii e¨vL¨v: ‡Zj ev wMÖR RvZxq c`v_© ‡a․Z Ki‡Y A¨vj‡Kvnj, A¨vwm‡Uvb, WvB‡K¬v‡ivwg‡_b BZ¨vw` e¨envi Kiv nq| 03. wg_vbj I B_vb‡ji g‡a¨ cv_©K¨ Kiv hvq †Kvb weKvi‡Ki gva¨‡g? [JU-A4.2017-18] A. I2/NaOH B. Br2/H2O C. jyKvm weKviK D. wMÖMb©vW weKviK mwVK DËi: A. I2/NaOH e¨vL¨v: CH3OH I CH3CH2OH ‡K Av‡qv‡Wvdig cixÿvi gva¨‡g cv_©K¨ Kiv hvq| Av‡qv‡Wvdig cixÿvq I2/NaOH e¨eüZ nq| 04. wMÖR cwi¯‥vi Ki‡Z e¨envi nq- [JU-A2.2017-18] i. A¨vj‡Kvnj ii. A¨vwmW iii. A¨vwm‡Uvb| †KvbwU mwVK? A. i I ii B. i I iii C. ii I iii D. i,ii I iii mwVK DËi: B. i I iii 05. PCl5 - Gi mv‡_ †KvbwUi wewµqvq HCl Drcbœ nq? [JU-D1.17-18] A. B_vi B. A¨vj‡Kvnj C. A¨vwgb D. wMÖMbvW© weKviK mwVK DËi: B. A¨vj‡Kvnj e¨vL¨v: PCl5 Gi mv‡_ A¨vj‡Kvn‡ji wewµhvq HCl Drcbœ nq| ROH(l)+PCl5(l) – RCl(l) + POCl3(l)+HCl(g) A¨vj‡Kvnj 06. †KvbwU A¨vw›U-wd«R iƒ‡c e¨eüZ nq?[JU-D1.2017-18; CU.2006-07, 2014-45] A.40% MøvBKj I 60% cvwbi wgkÖY B. cvIqvi A¨vj‡Kvnj C. 95% B_vbj I 5% cvwbi wgkÖY D. ‡iKwUdvBW w¯úwiU mwVK DËi: A. 40% MøvBKj I 60% cvwbi wgkÖY e¨vL¨v: 40% MøvBKj I 60% cvwbi wgkÖY wcÖ‡÷vb bv‡g wng‡ivaK ev A¨vw›Uwd«R iƒ‡c e¨eüZ nq| 07. A¨vj‡Kvnj I †K¬v‡ivdi‡gi wgkÖY c„_KxKiY dv‡b‡j ivL‡j †KvbwU Dc‡ii ¯Í‡i _v‡K? [JU-D3.2017-18] A. A¨vj‡Kvnj B. ‡K¬v‡ivdig C. cvwb D. A¨vj‡Kvnj-‡K¬v‡ivdi‡gi wgkÖY mwVK DËi: A. A¨vj‡Kvnj e¨vL¨v: * A¨vj‡Kvnj †K¬v‡ivdig A‡cÿv nvjKv| * ZvB †K¬v‡ivdig bq A¨vj‡Kvnj Dc‡i fvm‡e| 08. †Kvb GbRvBg ÷vP©‡K Av`ª©-we‡kølY K‡i g‡ëv‡R cwiYZ K‡i? [JU-D5.2017-18; JU.2012-13; SUST.2009-10] A. RvB‡gR B. Wvqv‡÷R C. g¨v‡ëR D. ‡KvbwUB bq mwVK DËi: B. Wvqv‡÷R e¨vL¨v: gë †_‡K wbtm„Z ÔWvqv‡÷RÕ bvgK GK cÖKvi GbRvBg Øviv ÷vP© Av`ª©- we‡køwlZ n‡q gj‡Uv‡R cwiYZ nq| 2(C6H10O5)n + nH2O Wvqv‡÷R ––––– nC12H22O11 09. C2H6O + PCl5 ? +? + HCl [JU-D5.2017-18] A. C2H5Cl + H3PO3 B. C2H5Cl + POCl3 C. CH3COCl + PCl3 D. ‡KvbwUB bq mwVK DËi: B. C2H5Cl + POCl3 e¨vL¨v: C2H6O+PCl5 C2H5Cl + POCl3+ HCl 10. †Kvb GbRvBg my‡µvR‡K Av`©ªwe‡køwlZ K‡i Møy‡KvR I d~ª‡±v‡R cwiYZ K‡i? [JU 2012-2013] A. g‡ëR B. RvB‡gR C. Bbfvi‡UR D. Wvqv‡÷R mwVK DËi: C. Bbfvi‡UR e¨vL¨v: my‡µvR (C12H22O11) Bbfv‡U©R –––––– Møy‡KvR + d«z‡±vR| 11. cvbxq wn‡m‡e B_vb‡ji e¨envi eÜ Ki‡Z †KvbwU †gkv‡Z nq? [JU. 11-12] A. wg_vbj B. wcwiwWb C. b¨vc_v D. meKwU mwVK DËi: D. meKwU 12. ûBw¯‥, eªvwÛ I i¨vg cÖf…wZ‡Z A¨vj‡Kvnj _v‡K- [JU 2011-12, JnU. 2011-12] A. 15-30% B.30-50% C. 50-60% D. 60-70% mwVK DËi: B. 30-50% e¨vL¨v: weqvi = 2-7%, k¨v‡¤úb = 15-16%, ûBw¯‥, eªvwÛ, i¨vg, wRb = 30-50% †R‡b ivLv fvj: Giv Zxeª †bkv m„wóKvix g` | 12% B_vbj‡K IqvBb e‡j| 13. C2H5OH + SOCl2 ? [JU-A. 2009-10] A. C2H5Cl + HSO4 B. C2H4Cl2 + H2SO4 C. C2H5Cl + SO2 + HCl D. C2H4SO4 + 2HCl mwVK DËi: C. C2H5Cl + SO2 + HCl e¨vL¨v: C2H5OH + SOCl2 C2H5Cl + SO2 + HCl 14. 1°, 2° Ges 3° A¨vj‡Kvnj kbv³Kvix jyKvm weKviK njt [JU 09-10; SUST.2007-08; RU.2009-10, 2011-12; MBSTU-B1.16-17,2017-18, RU. 2009-10;JUST.2015-16,16-17 ] A. Sn+Mvp HCl B. Mg+ Mvp HCl C. Mvp HCl+ZnCl2 D. Mvp HCl+SnCl2 mwVK DËi: C. Mvp HCl+ZnCl2 RU 01. A¨vjvBj A¨vj‡Kvn‡ji ms‡KZ †KvbwU? [RU. 2019-20] A. CH3CH2CH2CH B. CH3 OH | CH CH3 C. CH2=CHCH2OH D. CH3CH=CHOH mwVK DËi: C. CH2=CHCH2OH e¨vL¨v: CH2 = CH – CH2 n‡jv A¨vjvBj g~jK 02. BbfvU© wPwb n‡jv mgAvYweK wgkÖ‡Yi- [RU-Science-2,Set-3: 2018-19] A. Møy‡KvR I my‡µvR B. Møy‡KvR I d«z‡±vR C. d«z‡±vR I my‡µvR D. ‡KvbwUB bq

CHEMISTRY PLUS •Re imvqb 593 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES mwVK DËi: B. Møy‡KvR I d«y‡±vR e¨vL¨v: BbfvU© wPwb n‡jv Møy‡KvR I d«z‡±vR Gi mg AvYweK wgkÖY| 03. †Kvb GbRvBg Møy‡KvR‡K B_vBj A¨vj‡Kvn‡j iƒcvšZwiZ K‡i? [RU-Science-2,Set-3: 2018-19] A. Bbfvi‡UR B. gj‡UR C. RvB‡gR D. Wvqvm‡UR mwVK DËi: C. RvB‡gR e¨vL¨v: 2C6H12O6 Møy‡KvR RvB‡gR –––––– 4C2H5-OH+4CO2 B_vbj 04. wMømvwib †Kvb weKvi‡Ki mv‡_ wewµqv K‡i 1, 2, 3- UªvB‡K¬v‡iv‡cÖv‡cb •Zwi K‡i? [RU-H. 2015-16] A. PCl5 B. PCl3 C. POCl3 D. Cl2 mwVK DËi: A. PCl5 05. †Kvb ms‡KZwU A¨vj‡Kvn‡ji? [RU.2012-13, JnU. 2009-10] A. CH4O B. CH2O C. C6H7O D. CO2H2 mwVK DËi: A. CH4O e¨vL¨v: mwVK fv‡e mvRv‡j `vovq- CH3OH 06. †Kvb •Re †h․MwUi ùzUbv¼ me‡P‡q †ekx? [RU. 2011-12] A. HCOOH B. C2H5OH C. CH3OCH3 D. CH3CHO mwVK DËi: A. HCOOH e¨vL¨v: A¨vj‡Kvn‡ji †P‡q Kve©w·wjK GwmW †ekx kw³kvjx nvB‡Wªv‡Rb eÜb •Zix Ki‡Z cv‡i| ZvB Kve©w·wjK Gwm‡Wi ùzUbvsK A¨vj‡Kvn‡ji †P‡q †ekx| B_vb‡ji (78.3C) †P‡q diwgK Gwm‡Wi (100.8C) ùzUbvsK †ekx| 07. cwjnvBwWªK A¨vj‡Kvn‡ji D`vniY n‡jv- [RU.2011-2012] A. wg_vBj A¨vj‡Kvnj B.wMømvij C. †gw_‡j‡UW w¯úwiU D. †cÖvcvbj mwVK DËi: B.wMømvij e¨vL¨v: cwjnvBwWªK A¨vj‡Kvnjt CH2OH-CH(OH)-CH2OH (wMømvij) 08. B_vb‡ji mv‡_ Ca(OCl)Cl I cvwbi wewµqvq wK Drcbœ nq? [RU. 10-11] A. CH3Cl B. CH3CHO C. CHCl2 D. CCl3CHO mwVK DËi: D. CCl3-CHO e¨vL¨v: cixÿvMv‡i weøwPs cvDWvi, cvwb I B_vbj G wgkªY‡K cvZb K‡i UªvB †K¬v‡ivwg‡_b (†K¬v‡ivdig) ‣Zwi Kiv nq | wewµqvwU PviwU av‡c m¤úbœ nq| hvi cÖ_g av‡c †K¬vwib I KwjPzb, wØZxq av‡c B_vb¨vj, Z…Zxq av‡c UªvB‡K¬v‡iv B_vb¨vj ev †K¬vivj Ges me‡k‡l †K¬v‡ivdig Drcbœ nq| Ca(OCl)Cl+H2O = Cl2+Ca(OH)2 H3CCH2OH+Cl2 = H3CCHO+2HCl H3CCHO+3Cl2 = Cl3CCHO+3HCl 2Cl3CCHO+Ca(OH)2 = 2CHCl3+(HCOO)2Ca `„wó cÖLit cÖ‡kœi Ack‡b †K¬v‡ivdig bv _vKvq Ges mivmwi B_vbj I †K¬vwi‡bi wewµqv D‡jøL Kivq Drcv` n‡e- Cl3C-CHO 09. A¨vj‡Kvn‡ji Rvi‡Y Drcbœ nqÑ [RU. 2008-09] A. nvB‡WªvKve©b B. G÷vi C. B_vi D. A¨vjwWnvBW mwVK DËi: D. A¨vjwWnvBW e¨vL¨v: A¨vj‡Kvn‡ji Rvi‡Y Drcbœ nq A¨vjwWnvBW| kw³kvjx RviK Øviv RvwiZ Ki‡j Drcbœ nq •Re GwmW| 10. AvB‡mv-‡cÖvcvbj‡K K2Cr2O7 I H2SO4 mn‡hv‡M RvwiZ Ki‡j Drcbœ nq- [RU. 2008-09] A. A¨vwmUvjwWnvBW B. A¨vwm‡Uvb C. Av‡qv‡Wvdg© D. digvjwWnvBW mwVK DËi: B. A¨vwm‡Uvb e¨vL¨v: AvB‡mv-‡cÖvcvbj‡K K2Cr2O7 I H2SO4 mn‡hv‡M RvwiZ Ki‡j Drcbœ nq A¨vwm‡Uvb| 11. wPUv¸o w`‡q B_vbj Drcv`b wewµqvt [RU. 2007-2008] A. Av`ª©-we‡kølY B. RviY C. weRviY D. MuvRb mwVK DËi: D. MuvRb e¨vL¨v: Fermentation ev MuvRb cÖwµqvq wPUv¸o †_‡K B_vbj •Zwi Kiv nq| 12. †iw±dvBW w¯úwi‡U kZKiv KZ fvM A¨vj‡Kvnj _v‡K? [RU.2007-08, HSTU. 2011-12, 2010-11, CU. 2008-09] A. 98% B. 95.6% C. 99.5% D. 97% mwVK DËi: B. 95.6% e¨vL¨v: †iKwUdvBW w¯úwiU ev †kvwaZ A¨vj‡Kvnjmshyw³t 95.6% A¨vj‡Kvnj I 4.4% cvwb| e¨envit i. Jla •Zix‡Z ii. `ªveK wn‡m‡e iii. •Re †h․M ms‡køl‡Y iv. cig A¨vj‡Kvnj Drcv`‡b v. j¨v‡e weKviK wnmv‡e 13. Zij O2 Gi mv‡_ i‡KU R¡vjvbx iƒ‡c wK e¨eüZ nq? [RU. 2006-2007] A. wg_vbj B. B_vbj C. MøvBKj D. wMømvij mwVK DËi: B. B_vbj 14. C‡÷i Dcw¯
wZ‡Z my‡µv‡Ri dvi‡g‡›Ukb Ki‡j Drcbœ nq- [RU.06-07] A. wg_vbj B. Møy‡KvR C. ‡cÖvcvbj D. B_vbj mwVK DËi: B. Møy‡KvR e¨vL¨v: C12H22O11+H2O Bbfvi‡UR ––––––– 2C6H12O6+C6H12O6 my‡µvR Møy‡KvR d«z‡±vR CU 01. †KvbwU 2° A¨vj‡Kvnj? [CU-A.2019-20] A. RCH2OH B. R2CHOH C. R3COH D. RCH2CH2OH mwVK DËi: B. R2CHOH 02. Avjy n‡Z B_vbj •Zix‡Z jv‡M- [CU 2012-2013] A. RvB‡gR B. Wvqv‡÷R C. g¨vj‡UR D. †mjy‡jR E. meKwU mwVK DËi: E. meKwU e¨vL¨v: ÷vP© †_‡K B_vbj •Zix‡Z cÖ‡qvRbxq GbRvBgt D G M Wvqv‡÷R RvB‡gR g¨vj‡UR †mjy‡jR B_vbj •Zix‡Z jv‡M bv| †h‡nZz wZbwU AckbB mwVK ZvB DËi †`Iqv †h‡Z cv‡i E. meKwU 03. wgw_‡j‡UW w¯úwi‡Ui g‡a¨ †mvwWqvg avZz wb‡ÿc Ki‡j Drcvw`Z `nbkxj M¨vmwU n‡jv- [CU 2008-2009; CU.2009-10] A. wg‡_b B. B‡_b C. Bw_wjb D. nvB‡Wªv‡Rb E. A¨vwmwUwjb mwVK DËi: D. nvB‡Wªv‡Rb e¨vL¨v: wgw_‡j‡UW w¯úwiU ej‡Z GLv‡b A¨vj‡Kvnj‡K †evSv‡bv n‡q‡Q| Na, K, Ca, Mg BZ¨vw` avZzi mv‡_ A¨vj‡Kvnj wewµqv K‡i avZe A¨vjK·vBW I H2 M¨vm Drcbœ K‡i| 2R – OH + Na 2R – O – Na + H2 04. IqvU© (WORT) Kv‡K e‡j? [CU 2006-2007] A. g‡ëvR `ªeY B. ‡ebwRb C. wPwbi `ªeY D. A¤øxq `ªeY E. weï× A¨vj‡Kvnj mwVK DËi: A. g‡ëvR `ªeY e¨vL¨v: K‡qKwU `ªeYtÑ IqvU©t g‡ëv‡Ri `ªeY IqvBbt 12% B_vbj kK©ivt wPwbi `ªeY weï× A¨vj‡Kvnjt 99.5% A¨vj‡Kvnj KU 01. B_vbj ev®ú I evqyi wgkÖY‡K DËß Ag cÖfve‡Ki Dci w`‡q Pvjbv Ki‡j †KvbwU Drcbœ nq? [KU. 2011-2012, SUST:2009-10] A. digvjwWnvBW B. GwmUvjwWnvBW C. B_vBj Gwm‡UU D. Gwm‡Uvb mwVK DËi: B. GwmUvjwWnvBW e¨vL¨v: CH3CH2OH + O2 Ag 600C ––––––– 2CH3CHO + 2H2O

594 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 02. Mvp HCl Gwm‡W `ªexf~Z Abv`ª© ZnCl2 Gi `ªeY‡K e‡j- [KU. 2009-10] A. U‡jb weKviK B. jyKvm weKviK C. †bmjvi `ªeY D. †dwjs `ªeY mwVK DËi: B. jyKvm weKviK e¨vL¨v: Mvp HCl Gwm‡W `ªexf~Z Abv`ª© ZnCl2 Gi `ªeY‡K ejv nq jyKvm weKviK| CoU 01. wb‡Pi †h․M¸wji ùzUbvs‡Ki mwVK µgwU n‡e- [CoU-A. 2016-17, DU.7Clg-2019-20] A. CH3CHO<CH3CH2OH<CH3CH3 B. CH3CH3<CH3CH2OH<CH3CHO C. CH3CH3<CH3CHO<CH3CH2OH D. CH3CH2OH<CH3CH3<CH3CHO mwVK DËi: C. CH3CH3<CH3CHO<CH3CH2OH e¨vL¨v: A¨vj‡Kvn‡ji ùzUbvsK mgKve©b wewkó A¨vjwWnvBW I A¨vj‡Kb †_‡K †ekx| 02. B_vBj Av‡qvWvBW Rjxq KOH Gi mv‡_ wewµqvq Drcbœ K‡i- [CoU-Ka.2016-17] A. Ethyne B. Ethene C. Ethanol D. Ethane mwVK DËi: C. Ethanol e¨vL¨v: CH3CH2I+KOH(aq) CH3CH2OH+KI †R‡b ivLv fv‡jvt R –X + KOH Rjxq A¨vj‡Kvnj A¨vjwKb A¨vj‡Kvnjxq wUªKmt †hLv‡b †`wL‡e Rj, †mLv‡bB A¨vj‡Kvnj| 03. A¨vj‡Kvnj‡K †Lvjv evZv‡m †i‡L w`‡j †Kvb †h․M Drcbœ nq? [CoU-D. 2013-14] A. A¨vwgb B. B÷vi C. •Re GwmW D. B_vi mwVK DËi: C. •Re GwmW e¨vL¨v: A¨vj‡Kvnj‡K †Lvjv evZv‡m †i‡L w`‡j Drcbœ nq •Re GwmW| IU 01. †m‡KÛvix A¨vj‡Kvn‡ji Kvh©Kix g~jK- [IU. 2015-16] A. CH2OH B. >CHOH C. =C–OH D. >C(OH)2 mwVK DËi: B. >CHOH 02. A¨vj‡Kvnjxq g~jK Ges †dbjxq OH g~jK kbv³ cixÿvq cÖ‡hvR¨ weKviK- [IU-D. 2012-13] A. PCl5 B. Na + RX C. jyKvm D. A¨vmvBj n¨vjvBW mwVK DËi: A. PCl5 BRU 01. wMÖMbvW© weKviK, CH3MgI Kve©wbj †h․‡Mi mv‡_ hyZ wewµqvq 1° 2° I 3° A¨vj‡Kvnj •Zwi Ki‡Z cv‡i| C = O R1 R2 n‡Z 1° A¨vj‡Kvnj •Zwi n‡j R1 I R2 gvb Kx n‡e- [BRU-D1.2017-18] A. –CH3,CH3 B. –H, CH3 C. –H, H D. –CH2CH3, CH3 mwVK DËi: C. –H, H e¨vL¨v: wMÖMbvW© weKviK ïay gvÎ digvjwWnvBW (HCHO) Gi mv‡_ wewµqv K‡i 1° A¨vj‡Kvnj Drcbœ K‡i| DU-7Clg 01. AvB‡mv‡cÖvcvBj A¨vj‡Kvnj‡K A¤øxq †mvwWqvg WvB‡µv‡gU Øviv RvwiZ K‡i †Kvb †h․MwU cvIqv hvq? [DU-7clg. 2018-19] A. CH3CHO B. CH3CO2H C. CH3CH2CO2H D. CH3COCH3 mwVK DËi: B. CH3CO2H e¨vL¨v: AvB‡mv ‡cÖvcvBj A¨vj‡Kvnj‡K A¤øxq †mvwWqvg WvB‡µv‡gU Øviv RvwiZ Ki‡j B_v‡bvwqK GwmW cvIqv hvq| CH3CH(OH)CH3 [O] –– CH3COCH3 [O] –– CH3COOH STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION SUST 01. C4H10O ‡h․MwU PCl5 Gi m‡½ SuvSv‡jv M¨vm Drcbœ K‡i hv‡Z NH3 Øviv wm³ KvP`Û ai‡j mv`v †auvqv •Zwi K‡i| †h․MwU‡Z jyKvm weKviK †hvM Ki‡j ZvrÿwYKfv‡e mv`v Aat‡ÿc c‡o| †h․MwU n‡j- [SUST 12-13] A. n-weDUvbj B. AvB‡mv-weDUvbj C. UvU©-weDUvbj D. WvB-B_vBj B_vi E. †cÖvcvBj wg_vBj B_vi mwVK DËi: C. UvU©-weDUvbj 02. GKwU †h․M‡K †ebwR‡b `ªexf~Z K‡i PCl5 Gi m‡½ DËß Ki‡j Dnv n‡Z GKwU M¨vm wbM©Z nj, hv NH3 wm³ KvP i‡Wi ms¯ú‡k© mv`v †avuqv m„wó Kij| †h․MwU †Kvb ai‡bi? [SUST 2009-2010] A. G÷vi B. A¨vjwWnvBW C. wK‡Uvb D. A¨vj‡Kvnj mwVK DËi: D. A¨vj‡Kvnj e¨vL¨v: RCH2OH+PCl5 RCH2Cl+POCl3 +HCl NH3+HClNH4Cl (mv`v‡auvqv) 03. CH3CH2OH †h․MwUi g‡a¨ †h eÜbwU‡Z welg wefvRb (heterolytic fission) N‡U, †mwU n‡jvÑ [SUST-D. 2008-09] A. CC B. CO C. CH D. OH mwVK DËi: B. CO e¨vL¨v: CH3CH2OH †h․MwUi g‡a¨ CO eÜbwU‡Z welg wefvRb (heterolytic fission) N‡U| 04. A ‣Re †h․M‡K RvwiZ K‡i GKwU A¨vjwWnvBW Drcbœ n‡j A wK ai‡bi •Re †h․M? [SUST 2007-2008] A. GwmW B. cÖvBgvix A¨vj‡Kvnj C. ‡m‡KÛvix A¨vj‡Kvnj D. Uviwmqvix A¨vj‡Kvnj mwVK DËi: B. cÖvBgvix A¨vj‡Kvnj e¨vL¨v: cÖvBgvix A¨vj‡Kvnj‡K RvwiZ Ki‡j A¨vjwWnvBW Ges †m‡KÛvix A¨vj‡Kvnj‡K RvwiZ Ki‡j wK‡Uvb cvIqv hvq| 05. my‡µv‡Ri AvYweK ms‡KZ †KvbwU? [SUST 2006-2007] A. C6H12O6 B. C12H12O12 C. C12H22O11 D. (C6H10O5)n mwVK DËi: C. C12H22O11 06. CH3CH2OH + HX ZnCl2 –––– CH3CH2X + H2O wewµqvwU‡Z HXGi mwµqZv µgÑ [SUST-D. 2005-06] A. HI > HBr > HCl B. HI > HCI > HF C. HF > HCl > HI D. HCl > HF > HI mwVK DËi: A. HI > HBr > HCl e¨vL¨v: CH3CH2OH + HX ZnCl2 –––– CH3CH2X + H2O wewµqvwU‡Z HX Gi mwµqZv µg: HI > HBr > HCl| 07. wb‡Pi †Kvb wewµqv Øviv cÖvBgvix, †m‡KÛvix I Uviwkqvix A¨vj‡Kvn‡ji g‡a¨ cv_©K¨ wbY©q Kiv hvq bvÑ [SUST-D. 2005-06] A. weRvwiZ Cu B. Aw¤øq KMnO4 C. ZnCl2 + HCl D. PCl5 mwVK DËi: D. PCl5 e¨vL¨v: PCl5 Øviv cÖvBgvix, †m‡KÛvix I Uviwkqvix A¨vj‡Kvn‡ji g‡a¨ cv_©K¨ wbY©q Kiv hvq bv| KviY, GLv‡b me †ÿ‡Î HCl M¨vm •Zix nq| 08. wb‡Pi †KvbwU B_vbj? [SUST 2006-2007] A. CH3OCH3 B. CH3CH2CHO C. CH3CH2OH D. CH3COCH3 mwVK DËi: C. CH3CH2OH 09. †KvbwU Mvp nvB‡Wªv‡K¬vwiK GwmW I Abv`ª© wR¼ †K¬vivB‡Wi wgkÖ‡Yi mv‡_ me ‡P‡q `ªæZ wewµqv Ki‡? SUST-B:1993-94) A. CH3C(CH3 )2CH(OH)CH3 B.CH3C(CH3 )(OH)CH2CH3 C. CH3C(CH3)2CH2OH D. CH3CH(OH)CH3 E. CH3CH2CH2CH2OH

CHEMISTRY PLUS •Re imvqb 595 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES mwVK DËi: B. CH3C(CH3)(OH)CH2CH3 e¨vL¨v: Mvp HCl I Abv`ª ZnCl2 Gi wgkÖY‡K jyKvm weKviK e‡j| jyKvm weKvi‡Ki mv‡_ A¨vj‡Kvn‡ji wewµqvi µg nj3° > 2° > 1° > CH3OH JUST 01. K2Cr2O7 Øviv B_vbj‡K RvwiZ Ki‡j wb‡¤œi †KvbwU cvIqv hv‡e? [JUST-A,Set-Kha 2018-19] A. GwmUvjwWnvBW B. digvjwWnvBW C. GwmwUK GwmW D. diwgK GwmW mwVK DËi: C. GwmwUK GwmW e¨vL¨v: RviK wn‡m‡e K2Cr2O7H2SO4 Ges KMnO4H2SO4 e¨eüZ nq| H3CCH2OH B_vbj CH3CHO A¨vwmUvjwWnvBW CH3COOH A¨vwmwUK GwmW [O] K2Cr2O7 [O] K2Cr2O7 MBSTU 01. CH3CH2CH(OH)CH3 H2SO4 ––––– cÖavb Drcv`? [MBSTU-C,Set-2:2018-19, 17-18] A. CH3CH=CHCH3 B. CH3CHOHCH=CH2 C. CH3CH = CHOH D. CH3CH2CH=CH2 mwVK DËi: A. CH3-CH=CH-CH3 02. ‡ebRvBj A¨vj‡Kvn‡ji MvVwbK ms‡KZ †KvbwU? [BSMRSTU-C.17-18] A. B. C. D. mwVK DËi: A BSMRSTU 01. cÖvBgvwi Avj‡Kvn‡ji g„`y Rvi‡Y wK cvIqv hvq? [BSMRSTU-C. 2019-20] A. wK‡Uvb B. A¨vjwWnvBW C. G÷vi D. B_vi mwVK DËi: B. A¨vjwWnvBW e¨vL¨v: 1 0 ROH + [O] RCHO 02. Møy‡KvR †_‡K B_vbj •Zix‡Z †h GbRvBg e¨eüZ nq Zvi bvgÑ [BSMSTU-C. 2016-17, RU. 2008-09] A. Wvqv‡÷m B. RvB‡gR C. g¨vj‡Um D. †KvbwUB bv mwVK DËi: B. RvB‡gR e¨vL¨v: B_vbj `yB fv‡e •Zwi nq- (i) ÷vP© Wvqv‡÷R –––––– g‡ëvR g‡ëR –––– Møy‡KvR RvB‡gR ––––– A¨vj‡Kvnj (ii) my‡µvR Bbfv‡U©R ––––– Møy‡KvR + d«zK‡UvR RvB‡gR ––––– A¨vj‡Kvnj 03. †Kv‡j‡÷ij Kx? [BSMSTU-C. 2016-17] A. GKwU A¨vj‡Kvnj B. †dbj C. A¨vjwWnvBW D. wK‡Uvb mwVK DËi: A. GKwU A¨vj‡Kvnj e¨vL¨v: IUPAC Name (3) - cholest -5 en-3-ol Formula C27H46O Molar mass 386.65 04. 2(C6H10O5)n + nH2O nC12H22O11 GB wewµqvq cÖfveK wnmv‡e KvR K‡i? [BSMRSTU-C. 2013-14, 2014-15] A. g¨v‡ëR B. Wvqv‡÷R C. gvB‡KvWvigv GwmW D. †KvbwUB bq mwVK DËi: B. Wvqv‡÷R e¨vL¨v: 2(C6H10O5)n + nH2O nC12H22O11 GB wewµqvq cÖfveK wnmv‡e Wvqv‡÷R KvR K‡i| PUST 01. wMÖMbvW© weKviK + R2C = O X; GLv‡b X †Kvb ai‡bi †h․M? [PUST. 2019-20] A. R-COOH B. 2 A¨vj‡Kvnj C. 1 A¨vj‡Kvnj D. 3 A¨vj‡Kvnj mwVK DËi: D. 3 A¨vj‡Kvnj e¨vL¨v: wb‡¤œv³ wewµqv N‡U : RMgX + R –C | R = 0 ï®‥ B_vi ––––––– R– C | R | R – OH (3 alcohol) RMgX + R –C O | R = 0 ï®‥ B_vi ––––––– R– C | R | R – OH (3 alcohol) 02. ÷vP© †_‡K g‡ëvR Drcv`‡b e¨eüZ nq †Kvb GbRvBg? [PBSTU-B.2016-17;IU:2012-13] A. Có B. g‡ëR C. Wvqv‡÷R D. RvB‡gR mwVK DËi: C. Wvqv‡÷R e¨vL¨v: 2(C6H10O5)n + nH2O Wvqv‡ëR –––––– nC12H12O11 ÷vP© g‡ëvR HSTU 01. dvi‡g‡›Uk‡bi gva¨‡g Drcbœ nq- [HSTU-D.2017-18; CU 2011-2012; CU.2009-10; JU.2011-12] A. digvjwWnvBW B. digvwjb C. B_vbj D. B_vi mwVK DËi: C. B_vbj e¨vL¨v: wkí‡ÿ‡Î B_vbj Drcv`‡b dvi‡g‡›Ukb ev MvuRb cÖwµqv e¨eüZ nq| 02. GKwU A¨vj‡Kvnj `ªe‡Y mvjwdDwiK Gwm‡Wi Dcw¯
wZ‡Z cUvwkqvg WvB‡µv‡gU †hvM Kiv n‡j meyR eY© Drcbœ Ki‡j `ªeYwU †Kvb A¨vj‡Kvnj- [HSTU-A.2017-18] A. Uviwkqvix B. cÖvBgvix C. ‡m‡KÛvix D. †KvbwUB bv mwVK DËi: D. †KvbwUB bv e¨vL¨v: cÖvBgvix, †m‡KÛvix I Uviwkqvix A¨vj‡Kvnj K2Cr2O7 – H2SO4 mn‡hv‡M RvwiZ n‡q k~b¨, GK I `yB Kve©b Kg wewkó •Re GwmW Drcbœ K‡i wKš‧ †Kvb †ÿ‡ÎB eY© Drcbœ nq bv| NSTU 01. A¨vj‡Kvn‡j OH g~j‡Ki Aw·‡Rb KqwU msKiY AiweUvj MVb K‡i? [NSTU-A. 2010-11] A. 2 B. 3 C. 4 D. 5 mwVK DËi: C. 4 e¨vL¨v: A¨vj‡Kvn‡j OH g~j‡Ki Aw·‡R‡bi nvBweªWvB‡Rkb n‡jv sp3 | ZvB 4wU msKiY AiweUvj MVb K‡i| 02. wb¤œwjwLZ weKviK¸wji g‡a¨ †KvbwU C2H5OH kbv³ Kivi Rb¨ e¨eüZ nq? [NSTU-C. 2005-06] A. †d‡nwjs weKviK B. U‡jb weKviK C. KMnO4 D. PCl5 mwVK DËi: D. PCl5 e¨vL¨v: PCl5 Gi mvnv‡h¨ A¨vj‡Kvnj kbv³KiY Kiv nq| PSTU 01. †KvbwU †K¬vivj nvB‡WªU? [PSTU-A.2017-18] A. Cl2CH – CH(OH) B. Cl3C – CH(OH)2 C. Cl2CH(OH) D. ClCH2 – CH(OH) mwVK DËi: B. Cl3C – CH(OH)2 02. miweK GwmW †KvbwU? [PSTU-B.2017-18] A. CH3CH = CHCH2COOH B. CH3CH=C=CHCOOH C. CH3CH=CHCH=CHCOOH D. CH3CH2CH2CH = CHCOOH mwVK DËi: C. CH3CH=CHCH=CHCOOH e¨vL¨v: miweK Gwm‡Wi ms‡KZ nj C6H8O2| CH2OH CH2CH2O CHOHCH3 CH2OH CH3

596 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES CVASU 01. B_vbj kbv³ Kiv nq- [CVASU:2018-19] A. U‡jb weKviK cixÿv Øviv B. ‡dnwjs `ªeY cixÿv Øviv C. Av‡qvWdig cixÿv Øviv D. ivBgvi UvBg¨vb wewµqv Øviv mwVK DËi: C. Av‡qvWdig cixÿv Øviv e¨vL¨v: B_vb‡j CH3CH(OH)- g~jK hy³ _vKvq Av‡qv‡Wvdig cixÿv Øviv B_vbj kbv³ Kiv hvq †R‡b ivLv fv‡jv: wg_vb‡ji m‡½ m¨vwjmvBwjK GwmW †hvM Ki‡j wg_vBj m¨vwjmvB‡j‡Ui (Av‡qvW‡·i) MÜ wbM©Z nq, BnvB wg_vbj kbv³ K‡i| 02. †Kvb A¨vj‡KvnjwU RvwiZ nIqvi ci †dnwjs `ªe‡Yi mv‡_ wewµqv K‡i bv? [CVASU. 2011-12] A. cÖcvbj-1 B. weDUvbj-2 C. †cÖvcvbj D. 2-wg_vBj cÖcvbj-1 mwVK DËi: B. weDUvbj-2 e¨vL¨v: †m‡KÛvix A¨vj‡Kvnj‡K (†hgb- weDUvbj-2) RvwiZ Ki‡j wK‡Uvb •Zix nq, hv †dnwjs `ªe‡Yi mv‡_ wewµqv K‡i bv| 03. †Kvb †h․‡Mi A¨vj‡KvnwjK g~jK we`¨gvb bq? [CVASU. 2010-11] A. weDUvb¨vj B. †Kv‡j‡÷ij C. †dbj D. e¨v‡KjvBU mwVK DËi: A. weDUvb¨vj e¨vL¨v: †Kv‡j‡÷ij, †dbj I e¨v‡KjvBU GB 3wU‡Z A¨vj‡KvnwjK g~jK we`¨gvb| STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION BUET 01. MÖxMbvW© weKviK w`‡q GKwU cÖvBgvix A¨vj‡Kvnj •Zixi Rb¨ †h e¯‧wU e¨envi Kiv nq Zv nj? [BUET 2012-2013] A. CH3MgBr B. HCHO C. RCHO D. R- R mwVK DËi: B. HCHO 02. CH3OH Gi wk‡ívrcv`‡b †Kvb cÖfveK e¨eüZ nq? [BUET: 2011-12, JU. 2014-15;MAT.2002-03] A. Pt B. V2O5 C. ZnO+Cr2O3 D. ZnCl2+CaO mwVK DËi: C. ZnO+Cr2O3 e¨vL¨v: (CO + H2 )+ H2 ZnO+Cr2O3 –––––––––– 300C. 300atm CH3-OH 03. Kve©b •Zix Kivi Rb¨ GKwU weKv‡i my‡µv‡Ri (C12H22O11) g‡a¨ Nb H2SO4 †hvM Kiv nj| G wewµqvq H2SO4 cÖv_wgKfv‡e Kx wnmv‡e KvR K‡i? [BUET: 2011-2012] A. RwUj †h․M mnvqK B. wbiæ`K C. RviK D. Aat†ÿc mnvqK mwVK DËi: B. wbiæ`K e¨vL¨v: cvwbi cÖwZ Mvp mvjwdDwiK Gwm‡Wi Avmw³ AZ¨šÍ cÖej| d‡j nvB‡Wªv‡Rb I nvBWªw·j g~jKhy³ •Re †h․M †hgb, wPwb ev my‡µvR (C12H22O11) ‡K Mvp H2SO4 Gi g‡a¨ †hvM Ki‡j Mvp H2SO4 Øviv †kvwlZ n‡q nvB‡Wª‡UW mvjwdDwiK GwmW Drcbœ nq: C12H22O11(s)+11H2SO4(conc) 12C(s)+11H2O.H2SO4 nvB‡Wª‡UW mvjwdDwiK GwmW 04. wb‡Pi avivevwnK wewµqv ¸‡jvig‡a¨ †KvbwUi mvnv‡h¨ M‡elYvMv‡i propan-2-ol ‡_‡K 1, 2- Dibromopropane cÖ¯‧Z Kiv nq? [BUET: 2007-2008] A. wbiæ`‡bi ci ms‡hvRb B. Rvi‡Yi ci nvB‡WªvjvBwmm C. ms‡hvR‡bi ci nvB‡WªvjvBwmm D. nvB‡WªvjvBwm‡mi ci ms‡hvRb mwVK DËi: A. wbiæ`‡bi ci ms‡hvRb e¨vL¨v: (CH3CH2(OH)CH3) + H2SO4 –H2O –––– CH3CH=CH2 Br2 –– CH3CH2BrCH2Br KUET 01. wb‡Pi wewµqv‡Z Drcv` IV Gi ivmvqwbK ms‡KZ Kx n‡e?[KUET 2018-19] CH3OH P/I2 –– I KCN (alc) ––––––– II 2H2O/H+ –––––– III LiAlH4 –––– IV A. CH3CHO B. CH3CH2OH C. CH3COOH D. CH3CH2CH2OH E. CH3CH2COOH mwVK DËi: B. CH3CH2OH e¨vL¨v: CH3OH P/I2 –CH3I KCN ––CH3CN H2O/H+ ––––CH3COOH LiAlH4 ––––C2H5OH RUET 01. †iKwUdvBW w¯úwiU †KvbwU? [RUET. 2013-14, SUST 2007-08; CU.2008-09, 2006-07, RU. 2007-08, 2008-09, JU. 2011-12, CU. 2004-05] A. 90% ethanol and 10% water B. 95.6% ethanol and 4.4% water C. 70% ethanol and 30% water D. 98% ethanol and 2% water E. None mwVK DËi: B. 95.6% ethanol and 4.4% water e¨vL¨v: †iKwUdvBW w¯úwiU ev †kvwaZ A¨vj‡Kvnj Gi mshyw³t 95.6% A¨vj‡Kvnj I 4.4% cvwb| e¨envit i. Jla •Zix‡Z, ii. `ªveK wn‡m‡e, iii. •Re †h․M ms‡køl‡Y, iv. cig A¨vj‡Kvnj Drcv`‡b, v. j¨v‡e weKviK wnmv‡e CUET 01. A¨vjKvBb †_‡K A¨vjwK‡b iƒcvšÍ‡ii weKviK †KvbwU? [CUET. 2014-15] A. Methanol; Zn/HCl B. Ether; Sn/HCl C. Sorbitol; Pd/H2 D. Glycol; Zn-Hg/HCl mwVK DËi: C. Sorbitol; Pd/H2 BUTex 01. Kve©wbj †h․‡Mi mv‡_ wMÖMbvW© weKvi‡Ki wewµqvq †Kvb ai‡bi †h․M Drcbœ nq? [BUTex-2016-17] A. A¨vjwWnvBW B. A¨vj‡Kvnj C. A¨vj‡Kb D. Kve©w·wjK GwmW mwVK DËi: B. A¨vj‡Kvnj e¨vL¨v: Kve©wbj †h․‡Mi mv‡_ wMÖMbvW© weKvi‡Ki wewµqvq A¨vj‡Kvnj Drcbœ nq| 02. wb‡¤œi †KvbwU A¨vj‡Kvnj I †db‡ji g‡a¨ cv_©K¨ Ki‡e? [BUTex 12-13] A. Mvp H2SO4 B. ‡eqvi†U÷ C. jyKvm weKviK D. U‡jb weKviK mwVK DËi: C. jyKvm weKviK Tex.Eng.Clg. 01. Which compound is not the result of petroleum degradation? [Tex.Eng.Clg. 2019-20] A. Gasiline B. kerocine C. LPG D. Ethanol mwVK DËi: D. Ethanol e¨vL¨v: Ethanol can be formed from Fermentation, from alkyl halide or from grignard reagent. 02. What percentage of ethanol is used as a disinfectant? [Tex.Eng.Clg. 2019-20] A. 40% B. 60% C. 70% D. 30% mwVK DËi: C. 70% e¨vL¨v: (70 – 97)% Ethanol is used as a disinfectant. STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. wb‡Pi †Kvb GbRvBg Glucose †K Ethyl alcohol G cwiewZ©Z K‡i? [MAT. 2019-20] A. Zymase B. Diastase C. Invertase D. Maltase mwVK DËi: A. Zymase e¨vL¨v: dv‡g©‡›Ukb cÖwµqvq ÷vP© †_‡K B_vbj •Zwii GKwU avc Møy‡KvR †_‡K B_vbj cÖ¯‧wZ| GB av‡c C÷ †_‡K wbtm„Z RvB‡gR GbRvBg wn‡m‡e wµqv K‡i|

CHEMISTRY PLUS •Re imvqb 597 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 02. cig A¨vj‡Kvnj †KvbwU? [MAT. 2015-16] A. 90% B_vBj A¨vj‡Kvnj B. 90% B_vBj A¨vj‡Kvnj +10% wg_vBj A¨vj‡Kvnj C. 90% B_vBj A¨vj‡Kvnj +10% cvwb D. 100% B_vBj A¨vj‡Kvnj mwVK DËi: D. 100% B_vBj A¨vj‡Kvnj 03. †KvbwU B_vb‡ji †f․Z ag© bq? [MAT. 2013-2014] A. wgwó A¨vj‡Kvnjxq MÜhy³ B. DØvqx Zij C. cvwb‡Z A`ªeYxq D. cvwb‡Z m¤ú~Y© `ªeYxq mwVK DËi: C. cvwb‡Z A`ªeYxq e¨vL¨v: B_vb‡ji Ab¨vb¨ †f․Z ag©: ùyUbvsK = 78.5C cvbxq wn‡m‡e AígvÎvq D‡ËRK, AwaK gvÎvq weler eû •Re †h․‡Mi `ªveK wn‡m‡e e¨eüZ nq| 04. wMÖMbvW© weKvi‡Ki mv‡_ †hwUi wewµqv Øviv Uviwmqvix ev 3 0 A¨vj‡Kvnj Drcbœ Kiv hvq? [MAT 2006-2007] A. digvjwWnvBW B. wg_vBj C. B_vbj D. wK‡Uvb mwVK DËi: D. wK‡Uvb 05. †KvbwU A¨vj‡Kvn‡ji mvaviY (Laboratory) cÖ¯‧Z cÖYvjx? [MAT. 05-06] A. 30 n¨v‡jv‡R‡bv A¨vj‡K‡bi Av`ª©we‡kølY B. cÖvK…wZK M¨vm †_‡K Drcv`b C. IqvUvi M¨vm †_‡K ms‡kølY D. dvi‡gb‡Ukb c×wZ mwVK DËi: A. 30 n¨v‡jv‡R‡bv A¨vj‡K‡bi Av`ª©we‡kølY e¨vL¨v: A¨vj‡Kvn‡ji mvaviY (Laboratory) cÖ¯‧Z cÖYvjxt RX Gi Av`ª© we‡kølY cÖwµqvq| 3 0 -n¨v‡jv‡R‡bv A¨vj‡K‡bi Av`ª©we‡kølY| n¨v‡jv‡R‡bv A¨vj‡Kb †_‡K wMÖMbvW© wewµqvi mvnv‡h¨| A¨vjwKb †_‡K cvwb ms‡hvRb cÖwµqvq| Kve©vbvBj †h․M †_‡K weRviY cÖwµqvq| G÷vi †_‡K| 06. Wv³vix hš¿cvwZi RxevYybvk‡K e¨eüZ nq? [MAT 2005-06; RU.2011-12, JU. 2014-15] A. 70% B_vbj I 30% cvwbi wgkªY B. †gb_j C. 30% B_vbj I 70% cvwbi wgkªY D. †WUj mwVK DËi: A. 70% B_vbj I 30% cvwbi wgkªY e¨vL¨v: A¨vw›U‡mcwUK wn‡m‡e KvR K‡i| 07. Moisturizing cream •Zwi‡Z wb‡¤œi †KvbwU e¨eüZ nq? [MAT. 05-06] A. G÷vi B. wg_vBj A¨vj‡Kvnj C. B_vi D. miweUj mwVK DËi: D. miweUj 08. †KvbwU A¨vj‡Kvn‡ji mvaviY (Laboratory) cÖ¯‧Z cÖYvwj? [MAT. 05-06] A. 3 n¨v‡jv‡R‡bv A¨vj‡K‡bi Av`ª©we‡kølY B. cÖvK…wZK M¨vm †_‡K Drcv`b C. IqvUvi M¨vm †_‡K ms‡kølY D. dv‡g©‡›Ukb c×wZ mwVK DËi: C. IqvUvi M¨vm †_‡K ms‡kølY 09. CH3Cl †K CH3OH G cwiYZ Ki‡Z e¨eüZ weKviK n‡jv? [MAT. 2005-06] A. AlCl3/H2O B. ZnCl2/H2O C. Rjxq KOH D. NaNH2 mwVK DËi: C. Rjxq KOH 10. wgw_‡j‡UW w¯úwi‡Ui e¨envi †KvbwU? [MAT. 2001-02] A. Zvckw³ B. evwb©k wkí C. kw³gvÎv wbY©q D. †KvbwUB bq mwVK DËi: B. evwb©k wkí 11. †KvbwU mZ¨? [MAT. 2001-2002] A. H3CCH2OH+SOCl2H3CCH2–Cl+SO2+Cl2 B. wbDwK¬K GwmW kbv³Ki‡Y I c„_K Kivi Rb¨ KvMR †µvg¨v‡UvMÖvdx e¨eüZ nq C. mvjdvi A‡cÿv Aw·‡Rb AwaK Zwor abvZ¥K †m Kvi‡Y H2S G nvB‡Wªv‡Rb eÜb MwVZ nq D. 1 0 A¨vj‡Kvnj Kÿ ZvcgvÎvq jyKvm weKvi‡Ki mv‡_ Aat†ÿc Drcbœ K‡i mwVK DËi: B. e¨vL¨v: B Ack‡bi Z_¨wU mZ¨| A. Ack‡b Cl2 ¯
‡j HCl(g) n‡e| C. Ack‡b mvjdvi A‡cÿv Aw·‡Rb Kg Zwor abvZ¥K| D. Ackb 1 0 A¨vj‡Kvnj KÿZvcgvÎvq jyKvm weKvi‡Ki mv‡_ †Kvb wewµqv K‡i bv| 12. cÖvBgvix, †m‡KÛvix, Uviwmqvix A¨vj‡Kvnj †h Abymv‡i ‡kªYxwef³ n‡q‡Q †mwU n‡jv- [MAT 2000-01] A. eÜbxi cÖK…wZ Abymv‡i B. MVb Abymv‡i C. nvBWªwjK g~j‡Ki msL¨vbymv‡i D. nvBWªw·j g~j‡Ki Ae¯
vb Abymv‡i mwVK DËi: D. nvBWªw·j g~j‡Ki Ae¯
vb Abymv‡i e¨vL¨v: nvBWªw·j g~j‡Ki Ae¯
vb Abymv‡i 3 cÖKvi| h_v- (K) cÖvBgvix (10 ) A¨vj‡Kvnj (L) ‡m‡KÛvix (20 ) A¨vj‡Kvnj (M) Uviwmqvix (30 ) A¨vj‡Kvnj| 13. C6H12O6 ? –– 2C2H5OH+2CO2 ‡h GbRvBg Øviv MvuRb Ki‡j GB ivmvqwbK wewµqvwU m¤úbœ n‡e †mwU n‡jv? [MAT 2000-2001; JU.2012-13; RU. 2008-09; BSMRSTU-C.2016-17] A. RvB‡gR B. Wvqv‡÷R C. Bbfvi‡UR D. g¨vj‡UR mwVK DËi: A. RvB‡gR e¨vL¨v: C6H12O6(aq) RvB‡gR –––––– 20~25C 2CH3CH2OH(aq)+2CO2(g) Møy‡KvR B_vbj 14. 2CH3CH2OH + O2 Ag 250C ––––––– [MAT. 2000-01] Dc‡ii cÖwµqvq †hwU Drcbœ n‡eA. †ebRvBj A¨vj‡Kvnj B. B_vb¨vj C. wg_vb¨vj D. †cÖvcv‡bvb mwVK DËi: B. B_vb¨vj DAT 01. B_vBj A¨vj‡Kvn‡ji mv‡_ wb‡Pi †Kvb Dcv`vbwU wgwk‡q cvIqvi A¨v‡j‡Kvnj •Zix Kiv nq? [DAT- 2018-19] A. †ebwRb B. AK‡Ub C. †c‡Uªvj D. wµmj mwVK DËi: A. †ebwRb I C. †c‡Uªvj e¨vL¨v: cvIqvi A¨vj‡Kvnjt- weï× B_vb‡ji mv‡_ †ebwRb I †c‡Uªvj wgwk‡q †gvUi Mvwoi weKí R¦vjvbxiƒ‡c e¨envi Kiv nq| Zvckw³ Drcv`‡b e¨eüZ Giƒc B_vb‡ji wgkªY‡K cvIqvi A¨vj‡Kvnj ev kw³ Drcv`K A¨vj‡Kvnj ejv nq| 02. ÷vP©‡K g‡ëv‡R cwiYZ Ki‡Z wb‡Pi †Kvb GbRvBgwU e¨eüZ nq? [DAT.2018-19] A. g‡ëm B. Wvqv‡óm C. my‡µm D. RvB‡gR mwVK DËi: B. Wvqv‡óm e¨vL¨v: ÷vP© g‡ëvR Wvqv‡÷R my‡µvR Møy‡KvR g¨vj‡UR Møy‡KvR B_vbj RvB‡gR my‡µvR Møy‡KvR I dz‡±vR Bbfvi‡UR 03. Moisturizing Cream ‣Zwi‡Z wb‡Pi †Kvb A¨vj‡Kvnj e¨eüZ nq? [DAT. 2010-11, JUST. 2015-16, BSMRSTU. 2019-20] A. †cÖvcvbj-2 B. †n·vb 1, 3, 4, 6 ‡UUªvIj C. 2 A¨vj‡Kvnj D. 2-wg_vBj-2-†cÖvcvbj mwVK DËi: B. †n·vb 1, 3, 4, 6 †UUªvIj 04. A¨vj‡Kvn‡ji wngv¼ KZ wWwMÖ () †mw›U‡MÖW? [DAT. 2004-05] A. 138 B. 135 C. 130 D. 133 mwVK DËi: C. 130

598 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES PART 07 ‡dbj m¤úwK©Z Z_¨vewj Item- 01: ‡db‡ji cÖv_wgK Z_¨vewjt ‡db‡ji Aci bvg Kve©wjK GwmW (nvBWªw·‡ebwRb)| MÖv‡g M‡Ä mvc Zvov‡Z Kve©wjK GwmW e¨eüZ nq| UjyBb D™¢yZ †dbj mg~n‡K wµmj ejv nq| ‡dbj A¤øag©x, GwU bxj-wjUgvm‡K g„`y jvj K‡i wKš‧ Kve©w·wjK Gwm‡Wi g‡Zv NaHCO3 ‡_‡K CO2 Drcbœ K‡i bv| ‡dbj A¨vj‡Kvnj A‡cÿv mej GwmW| ‡db‡j H-bond _vKvi Kvi‡Y MjbvsK (42C) I ùzUbvsK (181C) mgAvYweK fi wewkó •Re †h․M A‡cÿv †ekx| wKDwgb †dbj c×wZ‡Z 90% e¨eüZ †db‡ji wk‡ívrcv`b Kiv nq| ‡dbj kxZj cvwb‡Z A`ªeYxq wKš‧ Mig cvwb‡Z AwaK `ªeYxq| Item- 02: †db‡ji cÖ¯‧wZ kbv³KiY I ¸iæZ¡cyY© ivmvqwbK wewµqvt wWmBb‡dKU¨v›U I A¨vw›U‡mcwUK Gi cv_©K¨: wWmBb‡dKU¨v›U A¨vw›U‡mcwUK †h me ivmvqwbK c`v_© RxevYy‡K †g‡i †d‡j msµgY †iva K‡i Zv‡`i‡K wPwKrmv weÁv‡b disinfectant e‡j| †h me ivmvqwbK c`v_© cÖvwY‡`‡ni ÿZ¯
v‡b RxevYy Avµg‡Y †`n‡Kv‡li cPb †iva K‡i I RxevYy‡K †g‡i †d‡j Zv‡`i‡K antiseptic c`v_© e‡j| †db‡ji 1% Rjxq `ªeY wWmBb‡dKU¨v›U wn‡m‡e e¨eüZ nq| †db‡ji 0.2% Rjxq `ªeY A¨vw›U‡mcwUK wn‡m‡e e¨eüZ nq| Item- 03: ‡db‡ji e¨envitÑ ‡db‡ji AmsL¨ evwYwR¨K e¨envi i‡q‡Q| ‡hgbtÑ RxevYybvkK †jvk‡b, Kve©wjK mvev‡b I cPb wbeviK wn‡m‡e m¨vwjmvBwjK GwmW I A¨vmwcwib bvgK Jlya cÖ¯‧ywZ‡Z ‡iwRb cÖ¯‧wZ‡Z I iÄK wk‡í e¨v‡KjvBU cøvw÷K, wcKwiK GwmW, A¨vw›U‡mcwUK †WUj cÖ¯‧wZ‡Z bvBj‡bi KuvPvgvj mvB‡K¬v‡n·vbj bvgK `ªveK Drcv`‡b †dbj e¨vcKfv‡e e¨eüZ nq| ‡R‡b ivLv fvjt Gw›Uev‡qvwUK •Zix‡Z ‡dbj e¨envi Kiv nq bv Item- 04: A¨vj‡Kvnj I †db‡ji g‡a¨ cv_©K¨ t A¨vj‡Kvnj ‡dbj A¨vj‡Kvnj cÖkg ev wbi‡cÿ| ‡dbj A¤øag©x| A¨vj‡Kvnj jyKvm weKvi‡Ki mv‡_ mv`v Aat‡ÿc †`q| †dbj jyKvm weKvi‡Ki mv‡_ †Kvb wewµqv K‡i bv| PCl5 Gi mv‡_ wewµqv K‡i HCl M¨vm Drmcbœ K‡i| PCl5 Gi mv‡_ wewµqv K‡i HCl M¨vm Drmcbœ K‡i bv| -t Z_¨ KwYKv (HOT NEWS) t- †dbj GZ g„`y A¤øxq †h †m 5% NaHCO3 Gi mv‡_I wewµqv K‡i bv| †db‡j wZbwU wØ-eÜb _vKvq -eÜbI wZbwU Z‡e -B‡jKUªb QqwU| †dbj Z¡‡Ki Dci wekv³ ÿ‡Zi m„wó Ki‡Z cv‡i| †dbj †j‡Wivi g¨vbv‡mi wewµqv Øviv e¨v‡KjvBU bvgK cwjgvi MVb K‡i| kbv³KiY OCH3 OOCCH3 wdbvBj B_v‡bv‡qU(G÷vi) ONa CH3X/(CH3)2SO4 CH3COCl/(CH3CO)2 O Na PCl5/ PCl3 OH OH CH3 CH3 CH3Cl [wd«‡Wj µ¨vdU] p-cresol o-cresol + wg‡_vw·‡ebwRb (A¨vwb‡mvj) ï®‥ AlCl3 †eªvwgb `ªeY cixÿv, FeCl3, wjevig¨vb cixÿv NaOH (aq) SO3Na [WvD c×wZ] Cl2 NaOH (aq) Cl †ebwRb †mvwWqvg †ebwRb mvj‡dv‡bU NaOH ONa Cl + POCl3 + HCl †dbj (Kve©wjK GwmW) OH

CHEMISTRY PLUS •Re imvqb 599 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES CH3 C OH CH3 OH CH3 NO2 NO2 NO2 OH Short Ans Question SAQWRITTEN SUGGESTION BAQ Broad Ans Question cÖkœ-01: + HO N O [BUET. 2019-20] DËi: OH I OH NO †dbj bvBUªv‡mv †dbj NO2 cÖkœ-02: wb‡¤œv³ ivmvqwbK c`v_©mg~‡ni g‡a¨ MV‡bi g~j cv_©K¨ D‡jøL Kit ÔKv‡e©vwjK GwmW I wcK&wiK GwmW| [BUTex. 2004-05] DËi: Kve©wjK GwmW n‡”Q †dbj I wcKwiK GwmW †db‡ji RvZK| cÖkœ-03: †dbj A¤øag©x †Kb, e¨vL¨v Ki| [Xv.‡ev. 2017; wm.‡ev. 2017, 2016] DËi: wb‡R †Póv Ki| cÖkœ-04: wewµqvwUi g~j Drcv` mg~n wjL| OH + Br2 (aq) 25C ––– ? [BUET. 2018-19] DËi: OH + Br2 (aq) 25C ––– OH Br Br Br [UªvB‡eªv‡gv †dbj] Br REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION DU 01. wb‡¤œv³ †KvbwU Øviv †dbj †_‡K wcKwiK GwmW cÖ¯‧Z Kiv nq? [DU-A. 2018-19] A. HNO3. H2SO4 B. H2SO4, 30–100C C. Dilute HNO3 D. Concentrated HNO3 mwVK DËi: D. Concentrated HNO3 e¨vL¨v: ‡db‡ji bvB‡Uªk‡b wcKwiK GwmW cvIqv hvq| OH OH NO2 NO2 NO2 + Concentrated HNO3 02. GwmW †K¬vivB‡Wi mv‡_ A¨v‡gvwbqv ev cÖvBgvix A¨vwgb wewµqv Ki‡j Drcbœ nq- [DU. 2012-13] A. acid amide B. organic acid C. alcohol D. aldehyde mwVK DËi: A. acid amide e¨vL¨v: GwmW †K¬vivB‡Wi mv‡_ A¨v‡gvwbqv ev cÖvBgvix A¨vwgb wewµqv Ki‡j Drcbœ nq GwmW A¨vgvBW| RCO Cl + H NHR – RCO-NHR + HCl GwmW †K¬vivBW cÖvBgvix A¨vwgb GwmW A¨vgvBW 03. wbgœwjwLZ †h․M¸‡jvi g‡a¨ me‡P‡q kw³kvjx A¤ø †KvbwU? [DU. 05-06] A. CH3CH2OH B. C. D. mwVK DËi: D e¨vL¨v: †ebwRb P‡µ - NO2 g~j‡Ki msL¨v hZ ev‡o A‡¤øi kw³gvÎv ZZ ev‡o| Aciw`‡K – CH3 g~j‡Ki †ÿ‡Î D‡ëv NUbv N‡U| A_©vr kw³gvÎv K‡g| 04. C6H5OH + NH3 ZnCl2 –––– wewµqvi wK Drcbœ nq? [DU. 2003-04] A. †ebRwqK GwmW B. bvB‡Uªv‡ebwRb C. A¨vwbwjb D. †K¬v‡iv‡ebwRb mwVK DËi: C. A¨vwbwjb e¨vL¨v: C6H5OH + NH3 ZnCl2 –––– C6H5NH2 JU 01. wb‡Pi †Kvb weKviK †dbwjK -OH g~jK kbv³Ki‡Y e¨eüZ nq? [JU-A, Set-A. 2019-20; MBSTU-B. 19-20 ;KU. 2019-20] A. FeCl3 B. avZe Na C. ZnCl2, HCl D. NaHCO3 mwVK DËi: A. FeCl3 02. ‡Kvb ‡h․MwU A¤øagx©? [JU-6.2017-18;CU.2006-07] A. PhCH2OH B. PhOH C. CH3CHO D. HCHO mwVK DËi: B. PhOH e¨vL¨v: A¨vj‡Kvnj A¤øag©x bv n‡jI †dbj A¤øag©x| 03. C6H5Cl + NaOH(aq) + HCl(aq) 300-400C 150-200atm ? + NaCl [JU-D7.2017-18] A.C6H5OH B. C6H4(Cl)OH C. C6H6 D. ‡KvbwUB bq mwVK DËi: A. C6H5OH 04. †dbj‡K †eªvwgb cvwbi mv‡_ wewµqv Ki‡j cÖavb Drcv` n‡e- [JU-A1.17-18] A. 2,4,6 UªvB‡eªv‡gv †dbj B. 2- †eªv‡gv †dbj C. 4-‡eªv‡gv †dbj D. 2,4-WvB‡eªv‡gv †dbj mwVK DËi: A. 2,4,6 UªvB‡eªv‡gv †dbj e¨vL¨v: OH + Br2 (aq) ‡dbj Br 2, 4, 6 UªvB‡eªv‡gv‡dbj b(y OH Br Br 05. OH kbv³Ki‡Y e¨eüZ nq- [JU-D: 2014-15] A. PCl5 B. P2O3 C. FeCl3 D. LiAIH4 mwVK DËi: C. FeCl3

600 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES O2N OH HO O2N OH O2N e¨vL¨v: wZbwU cixÿvi mvnv‡h¨ †dbj kbv³ Kiv nq| h_vt FeCl3 `ªeYmn cixÿv †e¸bx e‡Y©i mvnv‡h¨| †eªvwgbÑcvwb cixÿv mv`v/‡Zj‡m mv`v| wjevig¨vb cixÿv meyR eY©/bxj eY©| 06. †db‡ji ùzUbvsK KZ? [JU-D. 2014-15] A. 41C B. 182C C. 94C D. 78C mwVK DËi: B. 182C e¨vL¨v: †db‡ji ùzUbvsK n‡jv- 182C| 07. †db‡ji mv‡_ NaOH Gi wewµqvq †h․M A Drcbœ nq hv wg_vBj Av‡qvWvB‡Wi mv‡_ wewµqv K‡i †h․M B Drcbœ K‡i| B †h․MwUi bvg wK? [JU 2012-2013] A. †mvwWqvg wd‡bU B. A¨vwb‡mvj C. †eb‡RvwqK GwmW D. RvBwjb mwVK DËi: B. A¨vwb‡mvj e¨vL¨v: OH + NaOH ONa + CH3I OCH3 + NaI †mvwWqvg wd‡bv·vBW wg‡_vw· †ebwRb ev A¨vwb‡mvj 08. wcKwiK GwmW •Zwi Ki‡Z wb‡¤œi †Kvb †h․MwUi cÖ‡qvRb nq?[JU-D. 12-13] A. †K¬v‡iv‡ebwRb B. UjyBb C. A¨vwbwjb D. †dbj mwVK DËi: D. †dbj e¨vL¨v: †dbj‡K bvB‡Uªkb Ki‡j cvIqv hvq wcKwiK GwmW| 09. Abv`ª© AlCl3 Gi Dcw¯
wZ‡Z †db‡ji G÷vi‡K DËß Ki‡j †dbj G÷v‡ii AvYweK cybwe©b¨vm N‡U Ges A‡_©v I c¨viv nvB‡Wªvw·wK‡Uvb Drcbœ nq| wewµqvwUi bvgÑ [JU-D. 2012-13] A. j¨vWvivi-g¨vbv‡m B. BUvW© C. d«vBm cybwe©b¨vm D. †K¬B‡Rb-w¯§W mwVK DËi: C. d«vBm cybwe©b¨vm e¨vL¨v: Abv`ª© AlCl3 Gi Dcw¯
wZ‡Z †db‡ji G÷vi‡K DËß Ki‡j †dbj G÷v‡ii AvYweK cywbwe©b¨vm N‡U Ges A‡_©v I c¨viv nvB‡Wªvw·wK‡Uvb Drcbœ nq| wewµqvwUi bvg d«vBm cybwe©b¨vm wewµqv| 10. C6H5OH Ges C6H5CH2OH Gi g‡a¨ cv_©K¨ †`Lv‡bvi Rb¨ wb‡¤œi †KvbwU e¨envi Kiv hvq? [JU. 2012-13] A. Av`ª© †eªvwgb B. B_vbwqK A¨vbvnvBWªvBW C. B_v‡bvBj †K¬vivBW D. jNy HCl mwVK DËi: A. Av`ª© †eªvwgb e¨vL¨v: C6H5OH Ges C6H5CH2OH Gi g‡a¨ cv_©K¨ †`Lv‡bvi Rb¨ Av`ª© †eªvwgb e¨envi Kiv hvq| KviY, GwU ïay †db‡ji mv‡_ wewµqv K‡i| 11. 2, 4, 6-UªvB‡K¬v‡iv †dbj- [JU-D. 2011-12] A. RxevYybvkK B. KxUbvkK C. wngKviK D. cvwb we‡kvaK mwVK DËi: A. RxevYybvkK e¨vL¨v: 2, 4, 6-UªvB‡K¬v‡iv †dbj (TCP) RxevYybvkK wnmv‡e e¨eüZ nq| 12. †db‡ji mv‡_ NaOH wewµqvq Drcbœ †h․‡M CH3I †hv‡M Drcbœ nq- [JU 2010-2011] A. B. C. D. mwVK DËi: D. e¨vL¨v: JU. 2012-13 Gi e¨vL¨v ûeû| 13. †db‡ji †ÿ‡Î †KvbwU mZ¨? [JU-D. 2010-11] A. GwU A¤øxq B. GwU CCl4 G `ªeYxq C. G‡Z AbyiYb Abycw¯
Z D. GwU welg PvwµK †h․M mwVK DËi: A. GwU A¤øxq e¨vL¨v: †dbj g„`y A¤øxq cÖK…wZi| 14. †dbj wb‡Pi †Kvb `ªe‡Yi mv‡_ †e¸bx eY© •Zix K‡i? [JU-D. 2010-11] A. AgNO3 B. jyKvm `ªeY C. FeCl3 `ªeY D. Br2 `ªeY mwVK DËi: C. FeCl3 `ªeY e¨vL¨v: FeCl3 `ªe‡Yi mv‡_ †dbj †e¸bx eY© •Zix K‡i| 15. AvjKvZiv‡K AvswkK cvZb Ki‡j 230-270° †m. ZvcgvÎvq cÖvß cvwZZ As‡ki cÖavb Dcv`vb †KvbwU? [JU. 2009-2010] A. UjyBb B. ‡dbj C. RvBwjb D. wµmj mwVK DËi: D. wµmj e¨vL¨v: ‡dbj Drcv`‡b AvjKvZiv AvswkK cvZ‡b Drcbœ c`v_©- cvwZZ Ask ZvcgvÎv cÖavb Dcv`vb jNy †Zj 170C ‡ebwRb, UjyBb, RvBwjb ga¨g †Zj 170-230C ‡dbj, b¨vc_vwjb fvix †Zj 230-270C wµmj A¨vb_ªvwmb †Zj 270-360C A¨vb_ªvwmb cxP Ae‡kl Kve©b 16. c¨viv bvB‡Uªv‡db‡ji MvVwbK ms‡KZt [JU 2009-2010] A. B. C. D. ‡KvbwUB bq mwVK DËi: A. RU 01. wjevig¨vb cixÿvi mvnv‡h¨ kbv³ Kiv nq- [RU-H2.2017-18; JUST-17-18, JU. 2014-15; MBSTU-B. 2017-18; CU. 2011- 12; JU.2010-11] A. ‡dbj B. †K¬v‡ivdig C. A¨vwbwjb D. RvBwjb mwVK DËi: A. ‡dbj e¨vL¨v: ‡dbj kbv³Kvix cixÿv : i) FeCl3 `ªeY ii) †eªvwgb-cvwb iii) wjevig¨vb 02. cÖfveK ZnClz Gi Dcw¯
wZ‡Z †dbj Ges A¨v‡gvwbqv GK‡Î DËß Ki‡j wK Drcbœ nq? [RU.2016-17] A. ‡K¬v‡iv‡ebwRb B. WvBwdbvBj C. †ebwRb D. A¨vwbwjb mwVK DËi: D. A¨vwbwjb e¨vL¨v: OH NH2 + NH2H + H2O 03. •Re †h․‡M †dbwjK nvBWªw·j g~jK kbv³ Kivi Rb¨ †Kvb cixÿv Kiv nq? [RU. 2014-15] A. wjevig¨vb cixÿv B. jyKvm weKviKmK cixÿv C. ivBgvi UvBg¨vb cixÿv D. DU©R-wdwUM cixÿv mwVK DËi: A. wjevig¨vb cixÿv e¨vL¨v: •Re †h․‡M †dbwjK nvBWªw·j g~jK kbv³ Kivi Rb¨ wjevig¨vb cixÿv e¨envi Kiv nq| 04. †db‡ji g‡a¨ CHCl3 I NaOH Gi Rjxq `ªeY wgwkÖZ K‡i 60˚C G DËß Ki‡j wK Drcbœ nq? [RU. 2012-2013] A. A‡_©vnvBWªw· †ebR¨vjwWnvBW B. n-bvB‡Uªv‡mv †dbj C. m¨vwjmvBwjK GwmW D. †mvwWqvg mwVK DËi: A. A‡_©vnvBWªw· †ebR¨vjwWnvBW ev m¨vwjmvjwWnvBW 05. †db‡ji Rjxq `ªeY- [RU.2012-2013] A. bxj wjUgvm jvj K‡i B. jvj wjUgvm bxj K‡i C. †Kvb eY© cwieZ©b K‡i bv D. ‡KvbwUB bq mwVK DËi: A. bxj wjUgvm jvj K‡i e¨vL¨v: ‡dbj A¤øxq ZvB bxj wjUgvm‡K jvj K‡i| ONa CH2OH OCH3 H3C OH

CHEMISTRY PLUS •Re imvqb 601 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 06. “Sun screen agent‟ iƒ‡c e¨eüZ nq- [RU.2009-10] A. 2, 4- WvB †K¬v‡iv‡dbw· A¨vwmwUK GwmW B. wdbvBj m¨vwjmvB‡jU C. c¨viv nvBWªw· G‡Rv‡ebwRb D. m¨vwjmvBj GjwWnvBW mwVK DËi: B. wdbvBj m¨vwjmvB‡jU e¨vL¨v: Ilya wk‡í †db‡ji e¨envi : Ilya wk‡í KwZcq Ilya †hgb m¨vwjmvBwjK GwmW, m¨vjj ev wdbvBj m¨vwjmvB‡jU, †e`bvbvkK A¨vmwcwib cÖf„wZ cÖ¯ÍywZ‡Z| m¨vjj AwZ‡e¸wb iwk¥ †kvlY K‡i| ZvB GwU mvb w¯…wbs G‡R›U iƒ‡c e¨eüZ nq| 07. †dbj kbv³Ki‡Y wjevig¨vb cixÿvi bx‡Pi †Kvb wewµqvi kZ©wU cÖ‡hvR¨? [RU.2009-2010] A. NaNO2 I K‡qK †duvUv H2SO4 B. jNy NaOH Gi Dcw¯
wZ C. 1250 †mt I 4-7 atm Pvc D. Abv`ª© AlCl3 Gi Dcw¯
wZ mwVK DËi: A. NaNO2 I K‡qK †duvUv H2SO4 08. A¨vj‡Kvnj I †db‡ji g‡a¨ cv_©K¨ Kiv hvq wb‡Pi †Kvb wewµqv Øviv? [RU. 2006-07] A. Kvwe©j A¨vwgb cixÿv B. wjevig¨vb cixÿv C. DBwjqvgm wewµqv D. A¨vjWj Nbxfeb mwVK DËi: B. wjevig¨vb cixÿv e¨vL¨v: A¨vj‡Kvnj I †db‡ji g‡a¨ cv_©K¨ Kiv hvq wjevig¨vb cixÿv mvnv‡h¨| CU 01. wb‡Pi ‡Kvb ‡h․MwU me ‡P‡q Kg A¤øag©x? [CU-F. 2015-16] A. O–Nitrophenol B. m–Nitrophenol C. p – Nitrophenol D. Phenol E. 2, 4 – Dinitrophenol mwVK DËi: C. p – Nitrophenol e¨vL¨v: A¤ø ag©xq µg: P -Nitrophenol > O - Nitrophenol > M - Nitrophenol > phenol pKa Value 7.14 7.23 8.35 9.95 02. mvc Zvov‡bvi Kv‡R e¨eüZ nqÑ [CU-H. 2013-14] A. †dbj B. A¨vwmwUK GwmW C. diwgK GwmW D. UjyBb E. wMÖMbvW© weKviK mwVK DËi: A. †dbj e¨vL¨v: mvc Zvov‡bvi Kv‡R e¨eüZ nq †dbj| 03. Kve©wjK GwmW •Zwi‡Z e¨eüZ nq- [CU 2009-10, JU. 2016-17; BSMRSTU. 2013-14] A. ‡dbj B. ‡eb‡RvwqK GwmW C. ‡ebRvjwWnvW D. A¨vj‡Kvnj E. ‡K¬v‡iv‡ebwRb mwVK DËi: A. ‡dbj KU 01. Mvp HNO3 I Mvp H2SO4 Gi wgkÖ‡Yi mv‡_ †db‡ji wewµqvq wK Drcbœ nq? [KU. 2019-20] A. A¨vwbwjb B. c¨viv bvB‡Uªv‡dbj C. wcKwiK GwmW D. mvjdwbwjK GwmW mwVK DËi: C. wcKwiK GwmW e¨vL¨v: OH jNy2HONO2 OH NO2 + OH + 2H2O Mvp 3HONO2 OH NO2 NO2 + 2H2O NO2 NO2 e¨vL¨v: 2, 4, 6-UªvBbvB‡Uªv‡dbj ev wcKwiK GwmW 02. nvBWªw· †ebwR‡bi bvg n‡jvÑ [KU-E, 2013-14, CU-H. 2013-14] (i) Kve©jK GwmW (ii) †dbj (iii) †ebRvBj A¨vj‡Kvnj A. i B. ii C. i I ii D. i, ii ? iii mwVK DËi: C. i I ii e¨vL¨v: nvBWªw· †ebwR‡bi bvg n‡jv †dbj, hvi Aci bvg Kve©jK GwmW| 03. wcKwiK GwmW †dbj A‡cÿv KZ¸Y †ewk A¤øxq? [KU. 2012-13] A. 12 ¸Y B. 10 ¸Y C. 2 ¸Y D. mgvb mwVK DËi: B. 10 ¸Y e¨vL¨v: wcKwiK GwmW †dbj A‡cÿv 12 ¸Y †ewk A¤øxq| 04. †KvbwU •Zix‡Z †dbj e¨eüZ nq? [KU. 2011-2012] A. m¨vjj B. A¨vmwcwib C. wcKwiK GwmW D. me¸‡jvB mwVK DËi: D. me¸‡jvB IU 01. †db‡j NaHCO3 `ªeY †hvM Ki‡j wK N‡U? [IU. 2015-16] A. †mvwWqvg wd‡bU Drcbœ nq B. †ebwRb Drcbœ nq C. wcwiwWb Drcbœ nq D. †Kvb wewµqv nq bv mwVK DËi: D. †Kvb wewµqv nq bv 02. m¨vjj-Gi ivmvqwbK bvgÑ [IU-D. 2010-11] A. †ebRvBj †ebRv‡qU B. †dbvBj †eb‡Rv‡qU C. wdbvBj m¨vwjmvB‡jU D. wdbvBj m¨vwjmvB‡jU mwVK DËi: C. wdbvBj m¨vwjmvB‡jU e¨vL¨v: m¨v‡jvj-Gi ivmvqwbK bvg wdbvBj m¨vwjmvB‡jU| 03. †db‡ji Rjxq `ªe‡Yi m‡½ wbi‡cÿ FeCl3 `ªe‡Yi wewµqvq Drcbœ †h․‡Mi eY©Ñ [IU-D. 2004-05] A. jvj B. bxj C. †e¸bx D. njy` mwVK DËi: C. †e¸bx e¨vL¨v: †db‡ji Rjxq `ªe‡Yi m‡½ wbi‡cÿ FeCl3 `ªe‡Yi wewµqvq Drcbœ †h․‡Mi eY© †e¸bx| STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION MBSTU 01. wb‡Pi †h․M¸‡jvi g‡a¨ †KvbwUi A¤øZ¡ me‡P‡q †ewk? [MBSTU-C,Set-2:2018-19] A. B. C. D. mwVK DËi: C e¨vL¨v: A¤ø‡Z¡i µg 02. wb‡Pi †Kvb †h․MwU A¤øxq? [MBSTU-A1.17-18] A. CH3CH2OH B. C6H5OH C. CH3OH D. CH3CH2CH2OH mwVK DËi: B. C6H5OH e¨vL¨v: A¨vj‡Kvnj A‡cÿv †dbj AwaK A¤øag©x| 03. ‡Kvb †h․MwU FeCl3 Gi mv‡_ †e¸bx eY© m„wó K‡i? [MBSTU-A.2016-17] A. B_vbj B. ‡dbj C. B_vb¨vj D.B_vBj A¨vwgb mwVK DËi: B. ‡dbj e¨vL¨v: 6C6H5OH + FeCl3 (C6H5)6Fe2+HCI ‡dbj †e¸bx e‡Y©i RwUj †h․M OH H3C OH O2N OH OH OH OH H3C OH OH O2N > > > OH

602 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES BSMRSTU 01. ‡db‡ji Rjxq `ªe‡Y K‡qK †dvUv FeCl3 `ªeY †hvM Ki‡j Drcbœ †h․‡Mi is nqÑ [BSMSTU. B. 2016-17] A. †Mvjvcx B. †e¸Yx C. njy` D. jvj mwVK DËi: B. †e¸Yx e¨vL¨v: †e¸Yx e‡Y©i WvB‡dwiK †n·vwd‡bU bvgK RwUj †h․M Drcbœ nq| STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION KUET 01. wb‡gœi wewµqv †_‡K P ‡ei Ki| [KUET-2016-17] HNO3/H2SO4 –––––––– M Sn/HCl –––– N NaNO2/HCl ––––––– (0-5) O H2O/H+Heat –––––––– P A. A¨vwbwjb B. †K¬v‡iv‡ebwRb C. mvj‡dvwbK GwmW D. †dbj E. †ebwRb Wvqv‡Rvwbqvg †K¬vivBW mwVK DËi: D. †dbj e¨vL¨v: NO2 M = N = NH2 O = N2Cl P = OH CUET 01. †dbj‡K bvB‡Uªkb Ki‡j Drcbœ cÖavb †h․‡Mi bvg wK? [CUET. 2015-16] A. Picric acid B. m-nitrophenol C. Salicylic acid D. p-nitrophenol mwVK DËi: A. Picric acid e¨vL¨v: + HNO3 H + –––– HSO4 – + H2O NO2 NO2 O2N OH OH BUTex 01. ZnCl2 Gi Dcw¯
wZ‡Z †dbj‡K A¨v‡gvwbqvi mv‡_ 3000C ZvcgvÎv I D”P Pv‡c DËß Ki‡j wK cvIqv hvq? [BUTex. 2010-12; CUET. 2011-12] A. Benzene B. Benzoic acid C. Benzaldehyde D. Aniline mwVK DËi: D. Aniline STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. ‡KvbwU †db‡ji kbv³Kvix cixÿv bq? [MAT. 2016-17, BUTex. 2003-04, RU. 2008-09, JU. 2011-12] A. †dwiK †K¬vivBW `ªeY cixÿv B. wjevi g¨vb cixÿv C. A¨v‡µvwjb cixÿv D. †eªvwgb cvwb cixÿv mwVK DËi: C. A¨v‡µvwjb cixÿv e¨vL¨v: †dwiK †K¬vivBW `ªeY cixÿv, wjevig¨vb cixÿv, †eªvwgb cvwb cixÿv GB wZbwU n‡jv ‡dbj kbv³Ki‡Yi cixÿv| 02. wb‡¤œi †KvbwU A¨vj‡Kvnj I †db‡ji g‡a¨ cv_©K¨ Ki‡e? [MAT 11-12] A. Mvp H2SO4 B. †eqvi †U÷ C. jyKvm weKviK D. U‡jb weKviK mwVK DËi: C. jyKvm weKviK 03. wb‡gœi †Kvb cixÿvi mgq Mvp jvj ev Kgjv jvj e‡Y©i iÄK c`v_© Drcbœ nq? [MAT 2010-2011] A. NaHCO3 `ªeY cixÿv B. Mvp HCl I Sn Øviv weRviY C. wjevig¨vb bvB‡Uªv‡mv cixÿv D. Kvwe©j A¨vwgb cixÿv mwVK DËi: C. wjevig¨vb bvB‡Uªv‡mv cixÿv e¨vL¨v: †db‡ji mv‡_ wKQz KwVb NaNO2 I K‡qK †duvUv Mvp H2SO4 wgwk‡q DËß Ki‡j meyR `ªeY Drcbœ nq| G `ªe‡Y c‡i cvwb wgkv‡j jvj e‡Y©i `ªeY •Zwi nq| D³ `ªe‡Y AwZwi³ Kw÷K †mvWv `ªeY wgkv‡j cybivq Mvp meyR ev bxj e‡Y©i `ªeY Drcbœ nq| PART 08 B_vi m¤úwK©Z Z_¨vewj Item-01: B_v‡ii •ewkó¨ I ivmvqwbK ag©: B_v‡ii O cigvYywU sp3 msKwiZ| COC eÜb †KvbwU cÖvq 110 hv PZz¯Íj‡Ki †Kv‡Yi 109.5) cÖvq mgvb| B_vi cvwbi †P‡q nvjKv| B_vi AYy‡Z H-eÜb m¤¢e bq; ZvB B_vi AwaK DØvqx I wb¤œ ùzUbv¼ wewkó| B_v‡ii g~jK bb-‡cvjvi (A¨vj‡Kvn‡ji g~jK †cvjvi)| IUPAC c×wZ‡Z B_vi‡K A¨vj‡Kvw· A¨vj‡Kb iƒ‡c MY¨ Kiv nq| Kvh©Kix g~jK- R/ArOR/Ar ; ROR ; RO ; O Item-02: B_v‡ii cÖ¯‧wZtÑ DBwjqvgmb ms‡kølY: A¨vj‡Kvnj †mvwWqvg ev cUvwmqvg avZzi mv‡_ wewµqv K‡i avZe A¨vjK·vBW Drcbœ K‡i| avZe A¨vjK·vBW‡K A¨vjKvBj n¨vjvB‡Wi mv‡_ DËß Ki‡j mij I wgkÖ Dfq ai‡bi B_vi cvIqv hvq| †hgb: CH3CH2OH + Na CH3CH2ONa + 1 2 H2 CH3CH2O Na + Br CH2CH3 CH3CH2OCH2CH3 B‡_vw·B‡_b + NaBr A¨vj‡Kvnj †_‡K evwYwR¨K B_vi cÖ¯‧wZ: CH3CH2OH B_vbj Mvp H2SO4, 100C CH3CH2OSO3H B_vBj nvB‡Wªv‡Rb mvj‡dU Mvp H2SO4, 160-180C CH2 = CH2 Bw_wjb Al2O3, 350C CH2 = CH2 Bw_wjb Mvp H2SO4, 140C Mvp H2SO4, 2-AYy B_vbj C2H5OC2H5 WvB B_vBj B_vi C2H5OC2H5 WvB B_vBj B_vi wMÖMbvW© weKviK †_‡K B_vi •Zwi Kiv hvq

CHEMISTRY PLUS •Re imvqb 603 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES B_v‡ii e¨envi: wbw®…qZvi Kvi‡Y A‡bK ivmvqwbK wewµqvq (DU©R, wMÖMbvW©, weRviY) gva¨g wn‡m‡e| •Re †h․M †hgb †Zj, Pwe©, †iwRb, Dcÿvi BZ¨vw`i wb®‥vk‡b g~j¨evb `ªveK wn‡m‡e| A‡¯¿vcPv‡i †PZbvbvkKiƒ‡c (mvaviY I ¯
vbxq)| wngvqK (refrigerant) wn‡m‡e B_vi e¨eüZ nq| A¨vj‡Kvnj I B_v‡ii cv_©K¨: B_vi PCl5 Gi mv‡_ HCl wbM©Z K‡i bv wKš‧ A¨vj‡Kvnj HCl wbM©Z K‡i| CH3OCH3 + PCl5 2CH3Cl + POCl3 Ges ROH + PCl5 RCl + POCl3 + HCl ; NH3 + HCl = NH4Cl (mv`v †auvqv) -t Z_¨ KwYKv (HOT NEWS) t- B_vi mg‡hvRx †h․‡Mi DËg `ªveK| B_v‡ii ùzUbv¼ me‡P‡q Kg Ges cÖvqB wbw®…q| B_vi A‡cÿv cvwb AwaKZi kw³kvjx ÿviK| B_vi‡K Kvj KvM‡R †gvov evqy wb‡ivaK iOxb Kuv‡Pi †evZ‡j ivLv nq| B_vi ÿv‡i A`ªeYxq A_©vr ÿv‡ii mv‡_ wewµqv K‡i bv wKš‧ Gwm‡W `ªeYxq| avZe †mvwWqvg Øviv B_vi‡K ï®‥ Kiv hvq wKš‧ A¨vj‡Kvnj‡K ï®‥ Kiv hvq bv| SAQ: [Short Answer Question] cÖkœ-01: DBwjqvgmb wewµqv wK? [CUET. 2003-04] DËi: †mvwWqvg A¨vjK·vBW I A¨vjKvBj n¨vjvB‡Wi wewµqvi d‡j B_vi Drcbœ Kivi wewµqv‡K DBwjqvgmb wewµqv e‡j| R X + Na OR ROR + NaX cÖkœ-02: B_v‡ii e¨envi D‡jøL Ki| [RUET. 2004-05] DËi: Dc‡ii Z_¨ †`L| cÖkœ-03: B_vi wK? [KUET. 2005-06] DËit `ywU A¨vjKvBj g~jK ev A¨vivBj g~jK w؇hvRx Aw·‡Rb cigvYyi m‡½ GK e܇b hy³ †_‡K †h me †h․M m„wó K‡i, †kÖYxMZfv‡e G‡`i‡K B_vi e‡j| †hgbWvBwg_vBj B_vi CH3OCH3 ; Kvh©Kix g~jK: R/ArOR/Ar REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION JnU 01. wb‡Pi †KvbwU B‡cvw· †h․M? [JnU. 2014-15; HSTU.2016-17] A. WvB-B_vBj B_vi B. Bw_wjb A·vBW C. wg_vBj-wdbvBj B_vi D. WvB-wg_vBj B_vi mwVK DËi: B. Bw_wjb A·vBW e¨vL¨v: mvBwK¬K B_vi n‡jv B‡cvw· †h․M CH2 CH2 O [Bw_wjb A·vBW] 02. me‡P‡q Kg mwµq (Active) •Re †h․MÑ [JnU 2011-2012] A. Alcohol B. Amine C. Ether D. Organic acid mwVK DËi: C. Ether JU 01. A¨vj‡Kvw· cwjBw_wjb A·vBW GKwU- [JU-D: 2014-15] A. cÖfveK B. G÷vi C. bb-AvqwbK wWUvi‡R›U D. BgvjwmdvBs G‡R›U mwVK DËi: C. bb-AvqwbK wWUvi‡R›U e¨vL¨v: bb-AvqwbK wWUvi‡R›U nj Avavbwenxb A¨vj‡Kvw· cwjBw_wjb A·vBW Ges A¨vjKvB‡j‡UW †dbw· cwj-Bw_wjb A·vBW| R–O (–CH2–CH2–O)nH (A¨vj‡Kvw· cwjBw_wjb A·vBW) 02. wb‡gœi †h․M¸‡jvi g‡a¨ †KvbwUi ùzUbv¼ me‡P‡q Kg? [JU 2009-2010] A. C2H5OCOCH3 B. CH3COOH C. C2H5OC2H5 D. C2H5OH mwVK DËi: C. C2H5OC2H5 e¨vL¨v: B_vi mg~n cÖvq wbw®…q| ZvB G‡`i MjbvsK Ges ùzUbvsK me‡P‡q Kg| B_vi A¨vj‡Kb A¨vj‡Kvnj CH3OCH3 (24C) CH3CH2CH3 (42C) C2H5OH (78C) C2H5OC2H5 (35C) CH3(CH2)3CH3 (36C) C4H9OH (118C) RU 01. C2H5ONa (alc) + CH3I (alc) C2H5OCH3 + Nal(s) wewµqvwUi bvg- [RU-H.2016-17] A. DU©R wewµqv B. DBwjqvgmb wewµqv C. wd«‡Wj µvdU wewµqv D. †Kve wewµqv mwVK DËi: B. DBwjqvgmb wewµqv 02. RX-†K R-ONa Gi mv‡_ B_vixq `ªe‡Y DËß Ki‡j Drcbœ nqt [RU. 09-10] A. A¨vj‡Kb bvBUªvBj B. A¨vjKvbj C. A¨vjwKb D. B_vi mwVK DËi: D. B_vi e¨vL¨v: RX+R'ONa ROR' + NaX ROR + PCl5 RCl + POCl3 IU 01. ivmvqwbK †h․M A¨vwb‡mvj n‡jv- [IU-D. 2016-17] A. C6H5OH B.C6H5COOH C. C6H5OCH3 D. COCl2 mwVK DËi: C. C6H5OCH3 STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION JUST 01. DBwjqvgmb wewµqv e¨eüZ nq- [JUST-B: 2019-20] A. †Kvb †h․M Am¤ú„³ wKbv Rvbvi Rb¨ B. d¨vwU Gwm‡Wi †mvwWqvg jeY †_‡K A¨vjwKb cÖ¯‧wZ‡Z C. †dbj mbv³KiY D. A¨vjKvBj n¨vjvBW †_‡K B_vi cÖ¯‧wZ‡Z mwVK DËi: D. A¨vjKvBj n¨vjvBW †_‡K B_vi cÖ¯‧wZ‡Z

604 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES MBSTU 01. ‡KvbwU B_vi •Zix K‡i? [MBSTU-C2.2017-18; CU.2011-12] A. wd«‡Wj µvdU&m wewµqv B. DU©R wewµqv C. DBwjqvgmb wewµqv D. ‡Kve wewµqv mwVK DËi: C. DBwjqvgmb wewµqv e¨vL¨v: DU©R wewµqv A¨vj‡Kb, DBwjqvgmb wewµqv B_vi, †Kve wewµqv m¨vwjmvBwjK GwmW| HSTU 01. 1-B‡_vw·‡cÖv‡cb †KvbwU? [HSTU-A.2016-17] A. CH3CH2OCH2CH3 B. CH3CH2CH2OCH3 C. CH3OCH3 D. CH3CH2CH2OCH2CH3 mwVK DËi: D. CH3CH2CH2OCH2CH3 e¨vL¨v: IUPAC system G B_vi‡K A¨vj‡Kv‡ji A¨vjKw· †h․Miƒ‡c aiv nq| `ywU A¨vjKvBjg~j‡Ki e„n`vKviwU‡K A¨vj‡Kb wnmv‡e a‡i †QvUwU‡K A¨vjKw· iƒ‡c MY¨ Kiv nq| ‡hgb- CH3-O-CH2-CH2-CH3, CH3-O-C2H5 wg_w· †cÖv‡cb wg_w· B‡_b STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. B_v‡ii Rb¨ wb‡gœi †KvbwU mwVK bq? [MAT 2009-2010] A. ‡PZbv bvk K‡i B. cvwb‡Z `ªeYxq C. ùzUbvsK- 2400C D. cvwb A‡cÿv nvjKv mwVK DËi: C. ùzUbvsK- 2400C e¨vL¨v: ùzUbvsKt - 240 0C (Dimethyl Ether) MÜt wbgœ †kªYxi †hgb- B_w· B‡_b mvgvb¨ SuvSv‡jv MÜhy³| ‡PZbvbvkK ag©t B_v‡ii wbgœZi m`m¨ mœvqyZ‡š¿i Dci wµqv K‡i †PZbv bvk K‡i| mwµqZvt B_vi nvB‡WªvKve©‡bi b¨vq wbw¯…q| 02. B_vi m¤ú‡K© wb‡gœi †Kvb Z_¨wU mwVK bq? [MAT 2008-2009] A. R-O-R+PCl5RCl+POCl3+HCl B. ‡PZbv bvkK C. ‡Z‡ji Rb¨ wkí `ªveK D. ‡iwd«Rv‡i›U mwVK DËi: A. R-O-R+PCl5RCl+POCl3+HCl e¨vL¨v: cÖK…Zc‡ÿ, R-OH+PCl5RCl+POCl3+ HCl 03. ‡KvbwU B_vi? [MAT 2003-2004] A. R2COOH B. R2CHOH C. C6H5OCH3 D. H3COCl mwVK DËi: C. C6H5OCH3 DAT 01. B_v‡ii Rb¨ †Kvb Z_¨wU fzj? [DAT. 2005-06] A. ùzUbv¼ 24C B. †mvwWqv‡gi mv‡_ †Kv‡bv wewµqv K‡i bv C. Bnv GKwU M¨vmxq c`v_© D. Bnv GKwU mwµq †h․M mwVK DËi: D. Bnv GKwU mwµq †h․M 02. B_vi ms‡køl‡Y e¨envi‡hvM¨ weKviK- [DAT. 2004-05, 2002-03] A. RONa + RX B. ROH + RCOOH C. RMgX + H+ D. RONa mwVK DËi: A. RONa + RX PART 09 A¨vjwWnvBW I wK‡Uvb m¤úwK©Z Z_¨vewj Item- 01: Kve©wbj †h․‡Mi †kÖwYwefvMt wØ-‡hvRx Kve©wbj (>C = O) g~jK hy³ †h․M‡K Kve©wbj †h․M (A¨vjwWnvBW ev wK‡Uvb) e‡j| GwU n‡”Q •Re imvq‡bi †giæ`Û| Kve©wbj †h․‡Mi †kÖYxwefvM Drm Abymv‡i Alephatic Aromatic MVb Abymv‡i m¤ú„³ Am¤ú„³ mshyw³ Abymv‡i wK‡Uvb mij wgkÖ GKK eÜb CH3CH2CH2CHO (weDUvb¨vj) CH3COCH3 (A¨vwm‡Uvb) wØ ev wÎ-eÜb H2C = CHCHO (A¨v‡µvwjb) CH3CH = CHCHO (†µv‡Uvb¨vjwWnvBW) (H3C)2C = CHCOCH3 (†gwmUvBj A·vBW) C6H5CH = CHCHO (wmbvgvjwWnvBW) CH3CH2CHO (cÖcvb¨vj) CO †eb‡Rv‡d‡bvb †ebRvjwWnvBW CHO RCOR/Ar Dfq cv‡k wfbœ R/ArCOR/Ar Dfq cv‡k Same cÖK…wZ‡Z cÖvß Kve©wbj †h․‡Mi wewfbœ Drmt bvg Drm bvg Drm wmbvgvjwWnvBW Drm `viæwPwb, Gi MÜ `viæwPwbi g‡Zv †ebRvjwWnvBW ev`vg ev Zvi kv‡mi g‡a¨ _v‡K f¨vwbwjb f¨vwbjvi MÜ mvBUªvj ‡jgb Nvm Item- 02: Kve©wbj †h․‡Mi cixÿvMvi cÖ¯‧wZ: K¨vjwmqvg wg_vb‡qU we‡qvwRZ n‡q wg_vb¨vj MVb K‡i| (HCOO)2Ca – HCHO + CaCO3 K¨vjwmqvg wg_vb‡qU I K¨vjwmqvg B_vb‡q‡Ui wgkÖY‡K DËß Ki‡j B_vb¨vj cvIqv hvq| (CH3COO)2Ca + (HCOO)2Ca – CH3CHO + CaCO3 K¨vjwmqvg B_vb‡qU‡K DËß Ki‡j †cÖvcv‡bvb cvIqv hvq| (CH3COO)2Ca – CH3COCH3 + CaCO3

CHEMISTRY PLUS •Re imvqb 605 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES R-C-X O -HX R-C-H O ga¨g weRviK R-C-H OH H kw³kvjx weRviK R-C-H H H C +[H] O -CH2 -OH -CHOH CHO O C (Carbonyl Compound) CHO Ni/H2 CH2OH COCH3 Pt/H2 HO C CH3 H Item- 03: A¨vjwWnvBW I wK‡Uv‡bi RviY-weRvi‡Yi mvaviY wbqgvejxtÑ Type 01: weRviY wewµqvt mvaviYZ •Re †h․‡Mi weRviY wewµqvq `yB ai‡bi weRviK e¨envi Kiv nq| Zxeª weRviK (‡hgbt Zn.Hg/HCl, Pt/Pd/Ni, H2) ga¨g gv‡bi weRviK (‡hgbt LiAlH4, NaBH4, Na+H2O)| weRvi‡Yi wbqg tÑ •Re †h․‡Mi weRviY ej‡Z g~jZ H Gi msL¨v e„wׇK eySvq| weRviY wewµqv av‡c av‡c N‡U| •Re †h․‡M X ev OH– g~jK _v‡K, Zvn‡j Zviv weRviY wewµqvi mgq cÖwZ¯
vwcZ n‡q HX/H2O wnmv‡e AcmvwiZ nq| wØ-eÜb ev wÎ-eÜb †f‡O GKK e܇b cwiYZ nq| G c×wZ‡Z N, S ev C †K cÖwZ¯
vwcZ Kiv hvq bv| Gevi Zxÿè`„wó‡Z D`vniY jÿ K‡ivtÑ R–CH weRviK –––––– R–CH = CH2 weRviK –––––– R–CH2–CH3 Gevi gRvi wKQz m~‡Îi gva¨‡g weRviY wewµqv m¤úv`b ce©t Exclusive Law–01: Kve©wbj †h․‡Mi `~e©j ev ga¨g weRviK mg~n: (i) LiAlH4 (ii) NaBH4 (iii) Na+H2O/ROH (iv) Na–Hg+H2O (v) Ni/Pt + H2 G‡`i‡K GK‡Î [H] a‡i †bB| Dc‡iv³ weRviK¸wji †h‡Kvb GKwU _vK‡j ïaygvÎ Kvh©Kix g~jK‡K cwieZ©b Ki‡e| A_v©r –CHO Gi cwie‡Z© –CH2OH n‡e Ges wK‡Uvb –CO– Giv cwie‡Z© –CH(OH)– n‡e| Gevi A‡bK A‡bK D`vniY jÿ K‡iv: CH3–CHO NaBH4 ––––– CH3–CH2–OH CH3–CH2– O || C –CH3 NaBH4 ––––– CH3–CH2– OH | C– H–CH3 Ø›Ø Aemvb: RCH = CHCHO NaBH4 LiAH4 or, Ni/Pt/Pd + heat GKB †h․‡M C = C I C = O eÜb RCH = CHCH2OH C = C eÜb AcwieZ©b RCH2CH2CH2OH C = C eÜb mn weRvwiZ CH3CH=CH–CHO NaBH4 ––––––– CH3–CH = CH–CH2–OH CH3CH = CH–CHO LiAlH4 ––––––– CH3–CH2–CH2–CH2–OH ? mZK©Zv: Dc‡ii wewµqv `ywUi cv_©K¨ †`‡L‡Qv? cÖ_gwU‡Z wØeÜb Av‡Q wKš‧ c‡iiwU‡Z †bB| g‡b ivL‡e NaBH4 _vK‡j wØeÜb _vK‡e| A_v©r wØeÜb‡K weRvwiZ Ki‡Z cvi‡e bv| wKš‧ LiAlH4 _vK‡j wØ-eÜb mn weRvwiZ n‡e| A_v©r wØ-eÜb _vK‡e bv|

606 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES CHO CH3 Zn-Hg+HCl COCH3 Zn-Hg+HCl CH2CH3 C +[O] O -COOH -COOH CHO O C (Carbonyl Compound) K2Cr2O7+H2SO4 CHO COOH Exclusive Law–02: Kve©wbj †h․‡Mi Zxeª ev kw³kvjx weRviKtÑ Zn–Hg+Conc.HCl C +[Zn-Hg+HCl] O -CH3 - -CH2 - CHO O C (Carbonyl Compound) - –CH3 Dc‡iv³ weRviK _vK‡j ïaygvÎ Kvh©Kix g~jK‡K cwieZ©b Ki‡e| A_v©r –CHO Gi cwie‡Z© –CH3 n‡e Ges wK‡Uvb –CO– Giv cwie‡Z© –CH2– n‡e| Gevi A‡bK A‡bK D`vniY jÿ K‡ivt CH3–CHO Zn–Hg+HCl –––––––––– CH3–CH3 CH3–CH2– O || C –CH3 Zn–Hg+HCl ––––––––– CH3–CH2–CH2–CH3 CH3CH=CH–CHO Zn–Hg+HCl ––––––––– CH3–CH2–CH2–CH3 Exclusive Law–03: Kve©wbj †h․‡Mi RviKmg~ntÑ g„`y RviKÑ ‡dnwjs `ªeY I U‡jb weKviK Zxeª RviKÑ (i) O2 (ii) K2Cr2O7/Na2Cr2O7 + H2SO4 (iii) DËß HNO3 (iv) GwmWhy³ KMnO4 (v) V2O5, 300C (vi) Cr2O3 Zxeª RviK‡K wewµqvi myweav‡_© [O] a‡i wbjvg ... m~Î: CH3/CH2OH/CHO/> C = O Dc‡ii †h‡Kvb RviK [O] –––––––––––––––––– COOH Z‡e A¨vj‡Kvnj †_‡K Kve©w·wjK GwmW •Zwii cÖwµqv n‡jvcÖvBgvix A¨vj‡Kvnj (CH2OH) [O] –– A¨vjwWnvBW (CHO) [O] –– •Re GwmW (COOH) ‡m‡KÛvix A¨vj‡Kvnj (> CHOH) [O] –– wK‡Uvb (> C = O) [O] –– •Re GwmW (COOH) Uviwmqvix A¨vj‡Kvnj (COH) [O] –– wK‡Uvb (> C = O) [O] –– •Re GwmW (COOH) Type–01: Dc‡iv³ RviK¸wji †h‡Kvb GKwU _vK‡j ïaygvÎ Kvh©Kix g~jK‡K cwieZ©b Ki‡e| A_v©r –CHO Gi cwie‡Z© –COOH n‡e Ges wK‡Uvb –CO– Giv cwie‡Z©I –COOH n‡e| Z‡e A¨vjwWnvBW A‡cÿv wK‡Uv‡bi RviY wewµqv Kómva¨ D`vniY: H3C– O || C –H+[O] KMnO4/H2SO4 –––––––––––– H3C– O || C –OH mvB‡K¬v‡n·v‡bvb Zß HNO3 ev V2O5 Gi Dcw¯
wZ‡Z Aw·‡Rb Øviv RvwiZ n‡q A¨vwWwcK Gwm‡W cwiYZ nq| O + [O] HNO3 ev O2, V2O5 HOOC(CH2)4COOH mvB‡K¬v‡n·v‡bvb A¨vwWwcK GwmW (†n·vb WvBAwqK GwmW) Type 02:– Kve©wbj †h․‡Mi g„`y RviKчdnwjs `ªeY I U‡jb weKviK cÖK…Z ag© †dnwjs `ªeY U‡jb weKviK mshyw³ 5% (CuSO4 + NaOH) + NaK(C4H4O6) 10% AgNO3 + 10% NaOH msÁv 5% CuSO4 I 5% NaOH wgwkÖZ †mvwWqvg cUvwmqvg UviUv‡iU ev †ivwPwj je‡Yi mgAvqZb `ªe‡Yi wgkÖY‡K †dnwjs `ªeY e‡j| mgAvqZ‡bi 10% AgNO3 I 10% NaOH `ªe‡Yi wgkÖ‡Y cÖvß Aat‡ÿc AwZwi³ NH4OH †hvM K‡i `ªexf~Z K‡i cÖvß eY©nxb `ªeY‡K U‡jb weKviK e‡j| ag© `ªeYwU ÿvixq I g„`y RviK c`v_©| `ªeYwU ÿvixq I g„`y RviK c`v_©| eY© bxj| eY©nxb| †dnwjs `ªeY I U‡jb weKviK ïaygvÎ A¨vjwWnvB‡Wi mv‡_ wewµqv K‡i wKš‧ wK‡Uv‡bi mv‡_ wewµqv K‡i bv|

CHEMISTRY PLUS •Re imvqb 607 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES Kve©wbj †h․‡Mi g„`y RviK †dnwjs `ªeY (Cu2O jvj Aat‡ÿc) U‡jb weKviK (Ag mv`v Aat‡ÿc) ïaygvÎ A¨vjwWnvBW Gi wewµqvq Aat‡ÿc •Zwi nq ïaygvÎ A¨vjwWnvBW g„`yRviK A_v©r †dnwjs `ªeY I U‡jb weKvi‡Ki mv‡_ wewµqv K‡i| wKš‧ wK‡Uvb wewµqv K‡i bv| CH3–CHO + 2[Ag(NH3)2]OH ––– 50C 2Ag mv`v + CH3COONH4 + 3NH3 + H2O CH3–CHO + 2Cu(OH)2 + N + aO – H ––– CH3CO– ON + a + Cu2O jvj + H2 Short Ans Question SAQWRITTEN SUGGESTION BAQ Broad Ans Question cÖkœ-01: digvwjb wK? digvwj‡b †Kb A¨vj‡Kvnj †gkv‡bv nq? [BUET. 2011-12, 2006-07, CUET. 2003-04, BUTex. 09-10; RUET. 04-05; wm.‡ev. 2016; e.‡ev. 2015] DËi: wg_vb¨v‡ji 30-40% Rjxq `ªeY‡K digvwjb ejv nq| digvwj‡b hv‡Z RviY I cwjgvi •Zwi bv nq Zv Rb¨ digvwj‡b A¨vj‡Kvnj wgkv‡bv nq| GwU Dw™¢` (wUmy¨ bgybv)I RxeRš‧i †`n msiÿ‡Y e¨eüZ nq| cÖkœ-02: A¨v‡µvwjb Gi c~Y© MvVwbK ms‡KZ wjL: [RUET. 2011-12, BUET. 2007-08] DËi: Part-09, Item-01 cªkœ-3: Kve©wbj g~jK‡K wgw_wjb g~j‡K iƒcvšÍi Kiv hvq wKfv‡e? mgxKiYmnwjL| [BUET- 2018-19] DËi: ÒwK¬‡gbmb weRvi‡bi gva¨‡gÓ –C || O – + [H] Zn – Hg + HCl (Mvp) –––––––––––––––– – CH2– cÖkœ-04: k~b¨¯
vb c~iY Ki: [BUTex. 2007-08] (K) †dwjs `ªeY •Zix‡Z e¨eüZ nq | (L) A¨v‡gvwbqvhy³ wmjfvi bvB‡UªU `ªeY‡K weKviK e‡j| DËi: (K) Kcvi mvj‡d‡Ui Rjxq `ªeY I †mvwWqvg cUvwmqvg UviUv‡iU `ªeY (L) U‡jb| cÖkœ-05: (CH3COO)2Ca – [BUTex. 2007-08] DËi: (CH3COO)2Ca – CH3COCH3 + CaCO3 cÖkœ-06: mgxKiYmn wjL wK N‡U hLb: [RUET. 2008-09] DËi: CH3CHO + Cl2 CCl3CHO cÖkœ-07: †Zvgvi Kv‡Q kbv³Kvix wPý Qvov wfbœ wfbœ weKviK †evZ‡j wZbwU •Re †h․M i‡q‡Q †h․M¸‡jv nj CH3–CH2–OH, HCHO I CH3–CO–CH3| ïaygvÎ `ywU wfbœ ivmvqwbK cixÿv Øviv wKfv‡e †h․M wZbwU kbv³ Ki‡e? (i) DNPH cixÿv: (ii) U‡jb weKviK cixÿv: [BUET 2018-19] DËi : (i) CH3–CH2–OH †Kv‡bv wewµqv n‡e bv (A¨vj‡Kvnj)| (ii) CH3–CO–CH3 + 2, 4DNPH njy` Aat‡ÿc| (iii) HCHO A¨vjwWnvBW nIqvq U‡jb weKvi‡Ki mv‡_ wewµqv K‡i wmjfvi `c©b •Zwi K‡i| REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION DU 01. CH3CH(OH)CH2CHO Ges CH3COCH2CH2OH Gi g‡a¨ cv_©K¨ Kivi Rb¨ †Kvb weKviK e¨envi Kiv †h‡Z cv‡i? [DU,Unit-A:2018-19;BSMRSTU.2019-20] A. A¤øxq K2Cr2O7 `ªeY B. jNy H2SO4 C. 2, 4-WvBbv‡UªvwdbvBjnvBWªvwRb D. †dnwjs Gi `ªeY mwVK DËi: D. †dnwjs Gi `ªeY e¨vL¨v: A¨vjwWnvBW I wK‡Uv‡bi cv_©K¨ wb‡gœ mviYxe× Kiv njt cixÿv A¨vjwWnvBW wK‡Uvb 1| U‡jb weKviK wmjfvi `c©Y MVb K‡i wewµqvnxb 2| †dnwjs `ªeY jvj Aat‡ÿc Drcbœ K‡i wewµqvnxb 3| wmdm weKviK ‡Mvjvcx eY© wdwi‡q Av‡b wewµqvnxb 4| DËß NaOH †iwRb MVb K‡i †iwRb MVb K‡i bv 02. ‡dnwjs `ªeY I U‡jb weKviK Øviv wb‡Pi †Kvb MÖæc Gi g‡a¨ cv_©K¨ Kiv hvq? [DU-Ka.2017-18; RU-F. 2015-16, JU. 2014-15; BSMRSTU-H. 2019-20; MBSTU-A. 2019-20] A. Alkane and Alkyne B. Methanol C. Aldehyde and Ketone D. 1and 2 Alcohol mwVK DËi: C. Aldehyde and Ketone e¨vL¨v: A¨vjwWnvBW I wK‡Uv‡bi cv_©K¨ wbY©‡q U‡jb weKviK I †dwjs `ªeY e¨eüZ nq| 03. C6H5 -CHO+CH3NH2 q+H2O wewµqvq q Gi AvYweK ms‡KZ †KvbwU? [DU-Ka.2017-18] A. C6H5 C N CH3 H B. C6H5 C N C6H3 H C6H5 C. C6H5-CH3-COOH D. C6H5-COOH mwVK DËi: A. C6H5 C N CH3 H e¨vL¨v: C6H5-CHO+CH3NH2C6H5- H C =N-CH3+H2O

608 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 04. wb‡Pi †Kvb †h․MwU wmjfvi `c©Y cixÿv cÖ`k©b K‡i? [DU.- 17-18, iv.‡ev. 2016] A. ‡cÖvcv‡bvb B. ‡cÖvcvb¨vj C. ‡cÖvcvbj D. ‡cÖvcvBb mwVK DËi: B. ‡cÖvcvb¨vj e¨vL¨v: NH3 `ªeY wgwkÖZ AgNO3 Gi eY©nxb `ªeY‡K U‡jb weKviK e‡j| GwU A¨vjwWnvBW `ªe‡Yi mv‡_ wewµqv K‡i wmjfvi `c©b •Zix K‡i| wK‡Uvb Gi mv‡_ †Kvb wewµqv K‡i bv| 05. HCHO I CH3CHO Gi g‡a¨ cv_©K¨ Kivi Rb¨ cÖ‡qvRb- [DU-Ka.16-17] A. Iodoform test B. Carbylamine test C. Ninhydrin test D. Tollen's reagent mwVK DËi: A. Iodoform test e¨vL¨v: Av‡qv‡Wvdig/n¨v‡jvdig †U÷: HCHO I CH3CHO Gi g‡a¨ cv_©K¨ Kivi Rb¨ iodoform test Kiv nq| †h me †h․‡M CH3-CO-/CH3CH(OH)– g~jKwU Av‡Q Zviv iodoform test †`q| CH3CHO G CH3–CO g~jKwU Av‡Q ZvB CH3CHO iodo-forrm †Uó †`q wKš‧ HCHO G CH3CO- /CH3CH(OH)– g~jK bvB ZvB HCHO Av‡qv‡Wvdig †Uó †`q bv| Carbylamine test : Primary (1) amine Ges †K¬v‡ivdig kbv³Ki‡Y e¨eüZ nq| Tollen reagent [Ag(NH3)2]OH : Aldehyde & ketone cv_©K¨ Kivi Rb¨ e¨eüZ nqÑ Aldehyde + Tollen reagent → Ag mirror ‡`q| Ketone + tollen reagent → no reaction Ninhydrin test: †cÖvwUb/A¨vgvB‡bv GwmW/WvB‡ccUvBW kbv³Ki‡Y e¨eüZ nq| 06. †h kK©iv †dnwjs `ªeY I U‡jb weKviK‡K weRvwiZ Ki‡Z cv‡i bv| [DU-Ka. 2014-15, RU. 2008-09] A. Sucrose B. glucose C. Fructose D. Maltose mwVK DËi: A. Sucrose e¨vL¨v: my‡µvR ev‡` mKj g‡bvm¨vKvivBW I WvB m¨vKvivBW weRviK wPwb| A_v©r my‡µvR ev‡` mKj g‡bv-m¨vKvivBW I WvB-m¨vKvivBW ‡dnwjs `ªeY I U‡jb weKviK‡K weRvwiZ Ki‡Z cv‡i| 07. †KvbwU digvwjb? [DU-Ka. 2014-15, Xv.‡ev. 2016] A. 6-10% ethanoic acid B. 96% ethanol C. 30% H2O2 D. 40% aqueous solution of formaldehyde mwVK DËi: D. 40% aqueous solution of formaldehyde e¨vL¨v: digvjwWnvB‡Wi 40% Rjxq `ªeY‡K digvwjb ejv nq| hv RxevYybvkK wn‡m‡e KvR K‡i| 08. wb‡Pi †Kvb †h․MwU Fehling `ªe‡Yi mv‡_ wewµqv K‡i jvj Aat‡ÿc †`q? [DU. 12-13, 07-08, 04-05, 08-09; RU-Set-1. 18-19 JUST. 15-16; CU. 11-12] A. RCH2X B. (CH3)2CO C. RCH2OH D. RCH2CHO mwVK DËi: D. RCH2CHO e¨vL¨v: A¨vjwWnvBWmg~n †dnwjs `ªe‡Yi mv‡_ wewµqv K‡i wKš‧ wK‡Uvb K‡i bv 09. U‡jb weKviK hv‡`i cv_©K¨Ki‡Y e¨eüZ nq- [DU. 2011-12; JU.2009-10; JU.2009-10] A. CH3CH2OH and CH3CHOHCH3 B. CH3CH2NH2 and CH3CH2NHCH3 C. CH3CH2COCH3 and CH3CHO D. CH3COOH and CH3COOCH3 mwVK DËi: C. CH3CH2COCH3 and CH3CHO 10. wb‡gœi wewµqvwUi cÖavb Drcv` wK? [DU.2010-2011, 2006-07] CH2 = CH – CHO NaBH4 ––––– ? A. CH3CH(OH)CH2OH B. CH2=CHCH2OH C. CH3CHOHCHO D. CH3CH2CHO mwVK DËi: B. CH2=CHCH2OH e¨vL¨v: CH2 = CH – CHO NaBH4 ––––– CH2=CHCH2OH 11. †cÖvwcIbvjwWnvB‡Wi mv‡_ jNy †mvwWqvg nvB‡Wªv·vBW `ªeY hy³ Ki‡j A¨vj‡Wvj Nbxfeb wewµqv N‡U Ges •Zix nq- [DU.2008-2009,04-05] A.CH3CH2COOCH2CH2CH3 B.CH3CH2CH2(OH)CHCH2CHO C. CH3CH2CH(OH)CH2CHO D. CH3CH2COCH2CHO mwVK DËi: B. CH3CH2CH2 (OH)CHCH2CHO e¨vL¨v: GwU A¨vjWj Nbxfeb wewµqv| cÖwcIbvjwWnvB‡Wi mv‡_ jNy †mvwWqvg nvB‡Wªv·vBW `ªeY hy³ Ki‡j A¨vj‡Wvj Nbxfeb wewµqv N‡U Ges •Zix nq- 3-hydroxy hexanal. CH3CH2CHO+HCH2CH2CHO NaOH –––– CH3CH2CH(OH)CH2CH2CHO 12. A¨vwmU¨vjwWnvBW‡K wb‡K‡ji Dcw¯
wZ‡Z nvB‡Wªv‡Rb Øviv weRviY Ki‡j wb‡Pi †KvbwU cvIqv hvq?| [DU.2008-09, JU. 2016-17] A. Methanol B. Ethanol C. Propanol D. Butanol mwVK DËi: B. Ethanol e¨vL¨v: Ni/H2 weKviK Kve©wbj †h․‡Mi mv‡_ wewµqv K‡i A¨vj‡Kvnj •Zix K‡i| A¨vjwWnvBW 2 Kve©b wewkó nIqvq B_vbj •Zix nq| 13. R-CO-RR-CH2-R ivmvqwbK cwieZ©‡bi Rb¨ wb‡Pi †Kvb weKviKwU cÖ‡qvRb?| [DU.2008-09, 2006-07; RU.2008-09] A. H2SO4 B. NaBH4 C. K2Cr2O7 D. Zn/Hg.HCl mwVK DËi: D. Zn/Hg.HCl e¨vL¨v: Kve©wbj †h․‡Mi Zxeª weRviK n‡”Q- Zxeª weRviK + Kve©wbj †h․M A¨vj‡Kb Zn-Hg.HCl + R-CO-R R-CH2-R 14. CH3CHO+CH3MgBrPH2O Q | wewµqvwUi Q wK? [DU.2005-06] A. CH3CH2OH B. CH3COOH C. CH3CHO D. CH3 -O-CH3 mwVK DËi: ‡bB| e¨vL¨v: CH3 CHO+CH3MgBr CH3 C OMgBr CH3 CH OH (H2 ) CH3 CH3 (P) (Q) | H (H2O) 15. Gwm‡Uvb weRvwiZ n‡q wK Drcbœ K‡i? [DU. 05-06, 2000-01, CU-A. 17-18] A. ‡cÖvcvBj A¨vj‡Kvnj B. AvB‡mv‡cÖvcvBj A¨vj‡Kvnj C. GivBj A¨vj‡Kvnj D. weDUvBj A¨vj‡Kvnj mwVK DËi: B. AvB‡mv‡cÖvcvBj A¨vj‡Kvnje¨vL¨v: CH3COCH3 [H] –– CH3CH(OH)CH3 [AvB‡mv‡cÖvcvBj A¨vj‡Kvnj] JU 01. wZb Kve©b wewkó GKwU •Re †h․M X RvwiZ n‡q Y Drcbœ K‡i|Y ‡h․MwU 2,4-DNPH Gi mv‡_ njy` Aat‡ÿc Drcbœ K‡i| wKš‧ †dnwjs `ªe‡Yi mv‡_ wewµqv K‡i bv| X †h․MwUi ms‡KZ- [JU-A1.17-18] A. CH3-CH2-CH2-OH B. CH3-CH2-CHO C. CH3-CO-CH3 D. CH3-CH(OH)-CH3 mwVK DËi: D. CH3-CH(OH)-CH3 e¨vL¨v: ‡h‡nZz Y †h․MwU 2,4 - DNP Gi mv‡_ wewµqv K‡i wKš‧ †dnwjs `ªe‡Yi mv‡_ wewµqv K‡i bv ZvB Y nj wK‡Uvb Z_v †cÖvcv‡bvb| 2° A¨vj‡Kvnj RvwiZ n‡q wK‡Uvb Drcbœ nq e‡j X nj 2° A¨vj‡Kvnj Z_v †cÖvcvbj-2| 02. A¨v‡gvwbqv hy³ AgNO3 `ªeY Øviv wb‡Pi †KvbwU kbv³ Kiv hvq? [JU-A9.2017-18, Kz.‡ev. 2016] A. A¨vjwKb B. A¨vj‡Kvnjxq OH g~jK C. -CHO g~jK D. †dbj mwVK DËi: C. -CHO g~jK e¨vL¨v: A¨v‡gvwbqv hy³ AgNO3 `ªeY‡K U‡jb weKviK ejv nq| hv A¨vjwWnvBW kbv³Ki‡Y e¨eüZ nq|

CHEMISTRY PLUS •Re imvqb 609 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 03. wK‡Uv‡bi †ÿ‡Î †KvbwU mwVK bq? [JU-D1.2017-18] A. ‡K›`ªvKl©x hyZ wewµqv †`q B. weRviYag©x C. cÖej Rvi‡Y Kve©w·wjK GwmW •Zwi K‡i D. cÖej weRvi‡Y 2° A¨vj‡Kvnj •Zwi K‡i mwVK DËi: D e¨vL¨v: wK‡Uvb †K›`ªvKlx© hyZ wewµqv †`q| Avevi, wK‡Uvb weRviY agx©Zvi Kvi‡b g„`y fv‡e weRvwiZ n‡q 2 A¨vj‡Kvnj Drcbœ K‡i| †hgb- R R C=O+2[H] R R CHOH 04. CH3CH2OH ? – CH3CHO + H2 [JU-D3.2017-18] A. Cu,300°C B. Pt,350°C C. LiAlH4 D. Mvp H2SO4 mwVK DËi: A. Cu,300°C e¨vL¨v: A¨vj‡Kvnj ev®ú‡K DËß Cu cÖfve‡Ki Ici w`‡q Pvjbv Ki‡j: i) 1° A¨vj‡Kvnj †_‡K A¨vjwWnvBW I H2 M¨vm Drcbœ K‡i| ii) 2° A¨vj‡Kvnj †_‡K wK‡Uvb I H2 M¨vm Drcbœ K‡i| iii) 3° A¨vj‡Kvnj †_‡K A¨vjwKb I cvwb ev®ú Drcbœ K‡i| 05. digvjwWnvBW-Gi ùzUbvsK KZ? [JU.2012-2013] A. 21C B. +21C C. 49C D. +49C mwVK DËi: A. 21C e¨vL¨v: †h․‡Mi bvg ms‡KZ ùzUbv¼(0C) digvjwWnvBW A¨vwmU¨vjwWnvBW cÖcvb¨vjwWnvBW A¨vwm‡Uvb B_vBj wg_vBj wK‡Uvb HCHO H3C-CHO H3C-CH2-CHO H3C-CO-CH3 H3C-CO-CH2-CH3 –21 20 49 56 80 06. A¨vwmU¨vjwWnvBW-Gi ùzUbv¼ KZ? [JU.2012-2013] A. 20C B. +20C C. 80C D. +80C mwVK DËi: B. +20C 07. †cÖvcvb¨vj-Gi ùzUbvsK KZ? [JU.2012-2013] A. 20C B. +20C C. 49C D. +49C mwVK DËi: D. +49C 08. A¨vwm‡Uvb-Gi ùzUbvsK KZ? [JU. 2012-2013] A. 20C B. +49C C. 56C D. 102C mwVK DËi: C. 56C 09. 2HCHO KOH (aq) ––––––– Gi Drcv` n‡”Q- [JU.2009-10] A. HCOOK+H2O B. HCOOK+CH3OH C. HCOOK+RCO2 D. ïayHCOOK mwVK DËi: B. HCOOK+CH3OH 10. wb‡gœi †Kvb wewµqvwU RviY wewµqv? [JU.2010-2011] A. CH3COCH3+Zn/Hg Conc –––– CH3CH2CH3 B. CH3COCH3+CH3MgBr H3O + –––– (CH3)3COH C. CH3COCH3+NaBH4 HCl –––– CH3CHOHCH3 D. CH3CHOHCH3+Cu 350C –––– CH3CH2CH3+H2 mwVK DËi: B. CH3COCH3+CH3MgBr H3O + –––– (CH3)3COH e¨vL¨v: Dc‡ii wewµqvqA. Zxeª weRviY B. RviY wewµqv C. g„`y weRviY D. avZe weRviY 11. CH3CH2OH †_‡K CH3CHO •Zwi‡Z wb‡gœi †Kvb avZzwU e¨eüZ nq? [JU.2009-2010] A. Cu/250°C B. Na/100°C C. Hg/100°C D. P/200°C mwVK DËi: A. Cu/250°C e¨vL¨v: B_vbj ev®ú‡K 300° †m. DòZvq Zß Kcv‡ii Dci Pvjbv Ki‡j nvB‡Wªv‡Rb AcmvwiZ n‡q B_vb¨vj MwVZ nq| H3C – CH2OHCu. 300C ––––––– H3C – CHO + H2 12. Kv‡e©vwbj ( C=O) MÖæ‡ci Dcw¯
wZ cixÿv Kiv nq? [JU.2009-10, RU. 2007-08] A. jyKvm weKviK B. 2, 4-WvBbvB‡UªvwdbvBj nvB‡WªvwRb C. HNO3+H2SO4 D. I2+KOH Gi mvnv‡h¨ mwVK DËi: B. 2, 4-WvBbvB‡UªvwdbvBj nvB‡WªvwRb e¨vL¨v: jyKvm weKviK A¨vj‡Kvnj kbv³KiY 2,4-WvBbvB‡UªvwdbvBj nvBWªvwRb Kve©wbj g~jK kbv³KiY HNO3+H2SO4 bvB‡Uªk‡b e¨eüZ nq I2+KOH Gi mvnv‡h¨ B_vbj kbv³KiY RU 01. ï®‥ K¨vjwmqvg di‡gU‡K ï®‥ cvZb Ki‡j cvIqv hvq- [RU-Ka. 2018-19] A. digvjwWnvBW M¨vm B. wg‡_b M¨vm C. Kve©b WvB A·vBW M¨vm D. †K¬v‡ivdig mwVK DËi: A. digvjwWnvBW M¨vm e¨vL¨v: ï®‥ K¨vjwmqvg di‡gU‡K ï®‥ cvZb Ki‡j wg_vb¨vj ev digvjwWnvBW Drcbœ nq- (HCOO)2Ca – HCHO + CaCO3 02. U‡jb weKviK ‡KvbwU Ges †Kvb ai‡bi †h․‡Mi kbv³Ki‡Y e¨eüZ nq? [RU-H.2016-17;JU-D.2016-17] A. Cu(OH)2.NaOH, wK‡Uvb B. [Ag(NH3)2]OH, A¨vjwWnvBW C. [Ag(NH3)2]OH, Kve©w·wjK GwmW D. Cu(OH)2.NaOH, A¨vgvBW mwVK DËi: B. [Ag(NH3)2]OH, A¨vjwWnvBW 03. CH3CHO Ges C6H5CHO Gi g‡a¨ cv_©K¨Ki‡Y e¨eüZ nq- [RU.2012-2013; JU.2009-10] A. K2Cr2O7/H+ B. I2 + NaOH C. LiAlH4 D. HCN mwVK DËi: B. I2 + NaOH 04. mvB‡K¬v‡n·v‡bvb †K HNO3 Gi DËß ev®ú I V2O5 Øviv RvwiZ Kwi‡j Drcbœ nq- [RU.2009-2010] A. mvB‡K¬v‡n·vb¨vj B. A¨vwWwcK GwmW C. A¨vjWj D. me¸‡jv mwVK DËi: B. A¨vwWwcK GwmW e¨vL¨v: mvB‡K¬v‡n·v‡bvb Zß HNO3 ev V2O5 Gi Dcw¯
wZ‡Z Aw·‡Rb Øviv RvwiZ n‡q A¨vwWwcK Gwm‡W cwiYZ nq| CU 01. wb‡Pi †Kvb †h․MwU U‡jb weKvi‡Ki mv‡_ wewµqv K‡i mv`v `c©Y Drcbœ K‡i? [CU.2009-2010] A. CH3-CHO B. C2H5COC2H5 C. CH3-COOH D. CH3CH2Cl E. CH3CH2OH mwVK DËi: A. CH3-CHO 02. wg_vbj‡K Aw·‡Rb Øviv RvwiZ Ki‡j wK cvIqv hvq? [CU.2004-2005] A. cwjw_b B. Aw·‡Rb C. B‡_b D. digvjwWnvBW mwVK DËi: D. digvjwWnvBW e¨vL¨v: wg_vbj‡K Aw·‡Rb Øviv RvwiZ Ki‡j digvjwWnvBW cvIqv hvq| 2CH3OH+O2 Ag,600C 2HCHO+2H2O KU 01. wb‡gœi †KvbwU U‡jb weKviK [KU.2009-2010] A. [Zn(NH3)4] (OH)2 B. [Ag(NH3)2]NO3 C. [Cu(NH3)4]SO4 D. K4[Fe(CN)6] mwVK DËi: B. [Ag(NH3)2]NO3 O + [O] HOOC-(CH2 )4 -COOH HNO3 O2 , V2O5

610 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES CoU 01. CH3CHO Ges CH3COCH3 Gi g‡a¨ cv_©K¨ m~PK cixÿvq e¨eüZ nq- [CmU-A. 2016-17; RU.2009-10] A. K2Cr2O7/H+ B. 2,4-DNP C. [Ag(NH3)2] + D. PCl3 mwVK DËi: C. [Ag(NH3)2] + e¨vL¨v: Kve©bvBj †h․Mmg~‡ni g‡a¨ A¨vjwWnvBWmg~nB ïay †dnwjs `ªeY ev U‡jb weKvi‡Ki mv‡_ wewµqv K‡i| A¨vjwWnvBW I wK‡Uv‡bi g‡a¨ cv_©K¨Ki‡Y †dnwjs `ªeY ev U‡jb weKviK e¨eüZ nq| IU 01. †eb‡Rv‡d‡bvb‡K wRsK A¨vgvjMvg I Mvp nvB‡Wªv‡K¬vwiK Gwm‡Wi wgkÖY Øviv wewµqv NUv‡j- [IU. 2011-2012] A. WvBwdbvBj wg‡_b B. UjyBb C. -b¨vc_j D. wWwWwU mwVK DËi: A. WvBwdbvBj wg‡_b e¨vL¨v: C6H5CO-C6H5 +[H] ZnHg HCl C6H5-CH2-C6H5 + H2O 02. digvwjb (HCHO-Gi 40% Rjxq `ªeY) kYv³ Ki‡Z wb‡Pi †Kvb& weKviKwU cÖ‡qvRb n‡e? [IU.2012-2013] A. 2, 4-WvBbvB‡UªvwdbvBj nvBWªvwRb B. wdbvBj nvBWªvwRb C. 2-bvB‡Uªv †dbj D. bvBwUªK GwmW+mvjwdDwiK GwmW (HNO3+ H2SO4 ) mwVK DËi: A DU-7Clg 01. †Kvb †h․MwU †dnwjs `ªe‡Yi m‡½ wewµqv K‡i jvj e‡Y©i Aat‡¶c †`q? [DU-7clg,Unit-A:2018-19; BSMRSTU.2017-18] A. CH3CH2CHO B. CH3CO2CH3 C. CH3CH2CH2OH D. CH3COCH3 mwVK DËi: A. CH3CH2CHO e¨vL¨v: A¨vjwWnvBW mg~n U‡jb I †dnwjs `ªe‡Yi mv‡_ wewµqv K‡i| STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION SUST 01. †KvbwU mbv³Ki‡Y 2, 4-WvBbv‡UªvwdbvBj nvBWªvwRb e¨eüZ nq? [SUST-A. 2019-20; BSMRSTU. 2017-18] A. >C = < B. Ph–OH C. R–OH D. >C = O E. R–NH2 mwVK DËi: D. >C = O e¨vL¨v: Kve©wbj †h․M mg~n 2.4-DNPH Gi mv‡_ wewµqv K‡i Kgjv e‡Y©i Aat‡ÿc m„wó K‡i| 02. UjyBb KMnO 4,H2SO4 I NaOH ––––– II NaOH.CaO+Heat ––––––––––––– III Drcv` - I, II Ges III n‡jv h_vµ‡g [SUST. 2012-13, KU. 2012-13] A. †eb‡RvwqK GwmW, †mvwWqvg †ebR‡qU, †ebwRb B. †eb‡RvwqK GwmW, †dbj, †ebwRb C. †dbj, †eb‡RvwqK GwmW, †ebwRb D. †ebRvjwWnvBW, †eb‡RvwqK GwmW, †ebwRb E. †eb‡RvwqK GwmW, †dbj, †ebwRb mwVK DËi: A. †eb‡RvwqK GwmW, †mvwWqvg †ebR‡qU, †ebwRb e¨vL¨v: C6H5-CH3 KMnO 4,H2SO4 C6H5-COOH NaOH C6H5- COONa 6 6 NaOH,CaO Heat C H JUST 01. CH3CH(OH)CH2CHO Ges CH3COCH2CH2OH Gi g‡a¨ cv_©K¨ Kivi Rb¨ †Kvb weKviK e¨envi Kiv †h‡Z cv‡i? [JUST-C: 2019-20] A. A¤øxq K2Cr2O7 `ªeY B. †dnwjs `ªeY C. jNy H2SO4 D. 2,4-WvBbvB‡UªvwdbvBjnvBWªvwRb mwVK DËi: B. †dnwjs `ªeY 02. Wvqv‡ewUK myMvi wbY©‡q g~‡Î †dnwjs `ªeY †hvM Ki‡j jvj‡P Aat‡ÿc c‡o| Aat‡ÿcwU nj- [JUST-B.2017-18] A. Cu2O B. Fe(OH)2 C. Fe2O3 D. CuO mwVK DËi: A. Cu2O e¨vL¨v: myMvi/ Møy‡KvR + †dnwjs `ªeY Cu2O jvj Aat‡ÿc MBSTU 01. †cÖvwcb-1 Gi mv‡_ I‡R‡bi wewµqvq †KvbwU Drcbœ nq? [MBSTU-A. 2019-20] A. †cÖvcvb¨vj B. digvjwWnvBWC. weDUvbj D. weDUvb¨vj mwVK DËi: B. digvjwWnvBW e¨vL¨v: A¨vjwKb-1 Gi I‡RvbxKiY wewµqvq `yBwU Drcv‡`i g‡a¨ GKwU Drcv` memgq wg_vb¨vj ev digvjwWnvBW n‡e| 02. O †h․MwU‡Z wK ai‡Yi g~jK Av‡Q? [MBSTU-B. 2019-20] A. †ebwRb B. B_vi C. A¨vjwWnvBW D. wK‡Uvb mwVK DËi: D. wK‡Uvb 03. wb‡Pi †Kvb †h․MwU Av‡qv‡Wvdig wewµqv †`q bv? [MBSTU-B. 2019-20] A. B_vbj B. B_vb¨vj C. 2-†cÖvcvbj D. WvBB_vBj wK‡Uvb mwVK DËi: D. WvBB_vBj wK‡Uvb 04. Kve©wbj †h․‡Mi kbv³Ki‡Y e¨eüZ nq †KvbwU? [MBSTU-C,Set-2:18-19] A. U‡jb weKviK B. 2,4 -DNPH weKviK C. Kvwe©j A¨vwgb wewµqv D. ‡dnwjs `ªeY mwVK DËi: B. 2,4 -DNPH weKviK e¨vL¨v: Kve©wbj g~j‡Ki GKgvÎ kbv³Kvix weKviK 2,4-DNPH| G‡K eªvwWi weKviK e‡j| 05. CH3CHO Gi Rvi‡b Drcbœ nq- [MBSTU-C,Set-2:2018-19] A. HOOC(CH2)4COOH B. CH3CH2OH C. CH3COOH D. CH3OH mwVK DËi: C. CH3COOH e¨vL¨v: A¨vjwWnvBW I wK‡Uvb RvwiZ n‡q •Re GwmW Drcbœ K‡i| wK‡Uv‡bi †ÿ‡Î Kve©b msL¨v GK n«vm cvq| 06. †Kvb wewµqv Øviv Kve©wbj MÖæ‡ci Dcw¯
wZ kbv³ Kiv hvq? [MBSTU-C,Set-2:2018-19] A. DU©R wewµqv B. K¨vwbRv‡iv wewµqv C. wd«‡Wj-µvdU wewµqv D. n¨v‡jvdig wewµqv mwVK DËi: D. n¨v‡jvdig wewµqv e¨vL¨v: ‡h․MwU‡Z CH3-CO- g~jK _vKvq GwU n¨v‡jvdig wewµqv †`q| 07. wb‡Pi †KvbwU wK‡Uvb bq? [MBSTU-C2.17-18] O O A. Cl3C C CH3 B. CH3 C C. = O D. Cl3C COOH mwVK DËi: D. Cl3CCOOH 08. A¨vjwWnvBW wK‡Uvb A‡cÿv mwµq, KviYÑ [MBSTU-C.2016-17] A. fxoRwbZ cÖwZeÜKZv B. B‡jKUªbxq cÖfve I fxoRwbZ cÖwZeÜKZv C. sp2 msKivqY D. WvB‡cvj wg_w¯…qv mwVK DËi: B.B‡jKUªbxq cÖfve I fxoRwbZ cÖwZeÜKZv e¨vL¨v: B‡jKUªbxq cÖfve I †÷wiK evavi Kvi‡Y A¨vjwWnvBW A‡cÿv wK‡Uv‡bi mwµqZv Kg| Kve©wbj †h․‡Mi mwµqZvi µgC = O > H H C = O > CH3 H C = O CH3 CH3

CHEMISTRY PLUS •Re imvqb 611 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES BSMRSTU 01. Wvqv‡ewUK myMvi wbY©‡q g~‡Î †dwjs `ªeY †hvM Ki‡j wb‡Pi †KvbwUi jvj‡P Aa‡ÿc c‡o? [BSMRSTU-C. 2019-20] A. Fe2O3 B. Cu2O C. Cu(OH)2 D. Fe(OH)3 mwVK DËi: B. Cu2O e¨vL¨v: Møy‡Kv‡R CHO g~jK we`¨gvb ZvB Bnv- Møy‡KvR + †dnwjs `ªeY = Cu2O jvj Aat‡ÿc| Møy‡KvR + U‡jb weKviK = Ag mv`v Aat‡ÿc| HSTU 01. A¨vjwWnvBW g~jK kbv³Ki‡Y †Kvb cixÿv Kiv nq? [HSTU-A.2017-18] A. Av‡qv‡Wvdig cixÿv B. †dnwjs `ªeY I Av‡qv‡Wvdig cixÿv C. ‡dnwjs `ªeY I U‡jb weKviK cixÿv D. U‡jb weKviK I jyKvm weKviK cixÿv mwVK DËi: C. ‡dnwjs `ªeY I U‡jb weKviK cixÿv e¨vL¨v: ‡dnwjs `ªeY I U‡jb weKviK cixÿv Øviv A¨vjwWnvBW g~jK kbv³ Kiv nq| DU Technology 01. wb‡Pi †Kvb †h․MwU wmjfvi `c©Y cix¶v †`q? [DU-Projukti. 2019-20] A. †cÖvcvbb B. †cÖvcvb¨vj C. †cÖvcvbj D. †cÖvcvBW mwVK DËi: B. †cÖvcvb¨vj 02. wb‡Pi †Kvb †h․MwU †dwjs `ªe‡Yi mv‡_ wewµqv K‡i jvj Aat‡¶c †`q? [DU-Projukti. 2019-20] A. R–CH2X B. RCOOH C. RCH2OH D. RCH2CHO mwVK DËi: D. RCH2CHO STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION BUTex 01 Pvi Kv©ebhy³ A¨vj‡Kvnj A¤øxq cUvwkqvg WvB‡µv‡gU w`‡q RvwiZ Ki‡j wK‡Uvb Drcbœ nq| wb‡Pi †Kvb ms‡KZwU Avw` A¨vj‡Kvnj wb‡`©k K‡i? [BUET: 2011-2012] A. CH3CH2CH2CH2OH B. H2O=CHCH2CH2OH C. CH3C(CH3)(OH)CH3 D. CH3CH2CH(OH)CH3 mwVK DËi: D. CH3CH2CH(OH)CH3 e¨vL¨v: 2 0 A¨vj‡Kvnj‡K cUvwkqvg WvB‡µv‡gU (K2Cr2O7) Øviv RvwiZ Ki‡j wK‡Uvb cvIqv hvq| 02. wb‡¤œi †KvbwU Drcv` n‡e hLb `yB AYy A¨vwmUvjwWnvBW †mvwWqvg nvBWª·vB‡Wi mv‡_ wewµqv Ki‡e? [BUET: 2010-2011] A. CH3CH(OH)CH2CHO B. CH3COCOCH3 C. CH3COCHCH2OH D. CH3CH(OH)CH2CH2OH mwVK DËi: A. CH3CH(OH)CH2CHO e¨vL¨v: CH3CHO+CH3CHOCH3CH(OH)CH2CHO 03. wb‡Pi †KvbwU wK‡Uvb‡K RvwiZ K‡i? [BUET: 2006-2007] A. Tollen’s solution B. Benedict’s solution C. Fehling’s solution D. Dc‡ii †KvbwUB bq mwVK DËi: B. Benedict’s solution e¨vL¨v: U‡jb weKviK I †dnwjs `ªeY A¨vjwWnvBW‡K RvwiZ K‡i wKš‧ wK‡Uvb‡K K‡i bv| Aciw`‡K †e‡bwW± `ªeY A¨vjwWnvBW I wK‡Uvb Df‡qi mv‡_ hyZ wewµqvq Ask †bq| 04. wb‡gœi †KvbwU †_‡K wmd ÿviK Drcbœ nq| [RUET. 2013-14, JUST-A: 2018-19, MBSTU. 2014-15 ;Rp.U.2012-2013] A. CH3CHO+NH2OH B. CH3COCH3+NH3 C. HCHO+NH3 D. C6H5–CHO+CH3NH2 E. None mwVK DËi: D. C6H5–CHO+CH3NH2 e¨vL¨v: †ebRvjwWnvBW I cÖvBgvix A¨vwj‡dwUK A¨vwgb ev A¨v‡iv‡gwUK A¨vwg‡bi wewµqvq GK AYy cvwb AcmvwiZ n‡q †h myw¯
Z Kve©b bvB‡Uªv‡Rb wØeÜb hy³ †h․M Drcbœ K‡i Zv‡K wmdÿvi e‡j| CUET 01. wb‡Pi cÖkœ¸‡jv †_‡K mwVK DËi †e‡Q bvI| [CUET. 2014-15] i) digvwjb kbv³ Kivi Rb¨ †Kvb weKviKwU e¨envi Kiv nq? ii) cÖvK…wZK ivevi wb‡Pi †Kvb †h․MwUi cwjgvi? A. Tollen reagent; Isoprene B.Grignard reagent; Isobutene C. Lucas reagent; Isopropane D. Neslar reagent; Isopantane mwVK DËi: A. Tollen reagent; Isoprene e¨vL¨v: H–CHO + [Ag(NH3 )2 ]OHAg(`c©Y), Isoprene ivevi Gi g‡bvgvi| BUTex 01. digvwjb G Aat‡ÿc c‡obv KviY wK? [BUTex-2016-17] A. cvwb‡Z wgwkªZ e‡j B. B_v‡i wgwkªZ e‡j C. A¨vj‡Kvn‡j wgwkªZ e‡j D. †Kv‡bvwUB bq mwVK DËi: C. A¨vj‡Kvn‡j wgwkªZ e‡j e¨vL¨v: digvwjb n‡”Q 40% ev 35-40% HCHO Gi Rjxq `ªeY| G‡Z 10 – 13% B_vbj _v‡K| HCHO ‡h․‡M CHO- g~jK Surface G GKwU GwmwWK wgwWqvg •Zwi K‡i| ZvB e¨vK‡Uwiqv ev Ab¨vb¨ AYyRxe e¯‧i mv‡_ wewµqv K‡i Aat‡ÿc •Zwi A_ev e¯‧‡Z cuPb awi‡q w`‡Z cv‡i bv| 02. C6H5CHO AYy‡Z nvB‡Wªv‡Rb Gi msL¨v KqwU? [BUTex. 2015-16] A. 5 B. 2 C. 0 D. 1 mwVK DËi: C. 0 e¨vL¨v: C6H5CHO †Z - Kve©‡b †Kvb nvB‡Wªv‡Rb †bB| 03. Møy‡Kv‡Ri AvYweK ms‡KZ C6H12O6 GwU wK? [BUTex. 15-16, RU. 2008-09] A. Aldehyde B. Carbohydrate C. Acid D. Ester mwVK DËi: A. Aldehyde e¨vL¨v: d«z‡±vR wK‡Uvb, ivB‡evRA¨vjwWnvBW, Møy‡KvR GKwU CarbohydrateGes Aldehyde Tex.Eng.Clg. 01. Which compound is identified by using 2,4-DNP [Tex.Eng.Clg. 2019-20] A. Alcohol B. Carbonyl C. Alkene D. Alkane mwVK DËi: B. Carbonyl e¨vL¨v: Alcohol immersed 2,4-Dinitrophenyl hydrazine reacts with carbonyl compound to give orange or yellow precipitates of 2,4- Dinitrophenyl hydrazone. 02. Which of the following participate in aldol condensation reaction? [Tex.Eng.Clg. 2019-20] A. HCHO B. C6H5CHO C. CH3CHO D. Cl3C-CHO mwVK DËi: C. CH3CHO e¨vL¨v: Aldehydes having -hydrogen can participate in such reactions: H C C H H H O STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. digvjwWnvBW Ges cUvwmqvg DËß Kiv n‡j Kx cvIqv hvq? [MAT. 19-20] A. Methyl alcohol B. Acetylene C. Ethyl formate D. Methane mwVK DËi: Blank e¨vL¨v: cÖkœwU ÎæwUc~Y©| GLv‡b cUvwmqvg Gi ¯
‡j cUvwmqvg nvB‡Wªv·vBW n‡j mwVK DËi n‡Zv Methyl alcohol| GwU GKwU K¨vwbRv‡iv wewµqv| C cigvYy‡Z nvB‡Wªv‡Rbwenxb A¨vjwWnvBW Mvp NaOH, KOH A_ev K2CO3 `ªe‡Y hyMcrfv‡e RvwiZ I weRvwiZ n‡q h_vµ‡g Kve©w·wjK GwmW I A¨vj‡Kvn‡j iƒcvšÍwiZ nq| G‡K K¨vwbRv‡iv wewµqv e‡j|

612 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 02. wiwWDwms (Reducing) my¨Mvi n‡jvÑ [MAT.2016-17] A. ÷¨vP© B. Møy‡KvR C. †mjy‡jvR D. MøvB‡Kv‡Rb mwVK DËi: B. Møy‡KvR e¨vL¨v: GLv‡b ïaygvÎ Møy‡KvR Gi g‡a¨ gy³MÖæc we`¨gvb ZvB Møy‡KvR n‡jv wiwWDwms myMvi| d«z‡±vRI wiwWDwms my¨Mvi| 03. Møy‡KvR Kx ai‡Yi †g․j? [MAT. 2014-15] A. ‡n‡·vR g‡bvm¨vKvivBW B. Uªv‡qvR cwj m¨vKvivBW C. ‡n‡ÞvR g‡bvm¨vKvivBW D. bb-wiwWDwms myMvi mwVK DËi: A. ‡n‡·vR g‡bvm¨vKvivBW e¨vL¨v: C6H12O6 (Møy‡KvR) Gi MvVwbK ms‡KZt †hme g‡bvm¨vKvivB‡Wi AYy‡Z A¨vjwWnvBW g~jK _v‡K, Zv‡`i A¨vj‡WvR e‡j| Møy‡KvR GKwU A¨vj‡WvR| Møy‡Kv‡R 6wU C _vKvq GwU‡K †n‡·vR g‡bvm¨vKvivBW ejv n‡”Q| 04. †KvbwU weDUv‡bv‡bi ivmvqwbK ms‡KZ? [MAT. 2013-14] A. H3CCH2CHO B. H3CCOCH3 C. H3CCOCH2CH3 D. HCHO mwVK DËi: C. H3CCOCH2CH3 05. wb‡gœi †KvbwU Øviv †n·vwgb •Zix nq? [MAT. 11-12, 03-04, DAT. 03-04) A. digvwjb B. A¨vwgb C. Bw_wjb D. dg©vjwWnvBW mwVK DËi : A. digvwjb 06. wb‡gœi †Kvb cixÿvi mgq †U÷ wUD‡ei Zjvq Cu2O Gi jvj njy` Aat†ÿc c‡o? [MAT.2009-2010] A. wjUgvm cixÿv B. ‡dnwjs `ªeY cixÿv C. FeCl3 `ªeY cixÿv D. NaHCO3 `ªeY cixÿv mwVK DËi : B. ‡dnwjs `ªeY cixÿv 07. wb‡¤œi †KvbwU D³ †h․‡Mi mwVK D`vniY bq? [MAT. 2007-08, DAT. 06-07] A. Am¤ú„³ wK‡Uvb : A¨v‡µvwjb B. A¨vwj‡dwUK A¨vjwWnvBW : B_vb¨vj C. A¨v‡iv‡gwUK wK‡Uvb : †eb‡Rv‡d‡bvb D. m¤ú„³ A¨vjwWnvBW : †cÖvcvb¨vj mwVK DËi: A. Am¤ú„³ wK‡Uvb : A¨v‡µvwjb 08. B_vbj †_‡K B_vb¨vj cÖ¯‧wZ‡Z †h avZz e¨envi Kiv hv‡e Zv n‡”Q? [MAT. 2004-05] A. Na B. Cu C. Al D. Hg mwVK DËi: B. Cu 09. CH CH OH O Ag C 0 ,250 2 3 2 2 Dc‡ii cÖwµqvq †hwU Drcbœ n‡e [MAT 2000-2001] A. ‡ebRvBj A¨vj‡Kvnj B. B_vb¨vj C. wg_vb¨vj D. †cÖvcv‡bvb mwVK DËi: B. B_vb¨vj DAT 01. †cÖvwcb †_‡K †cÖvcv‡bvb •Zwi‡Z e¨eüZ nq- [DAT. 2002-03] A. PdCl2 B. FeCl3 C. NaCl D. AlCl3 mwVK DËi: A. PdCl2 PART 10 •Re GwmW I •Re Gwm‡Wi RvZKmg~n m¤úwK©Z Z_¨vewj Item-01t •Re GwmW I •Re Gwm‡Wi RvZ‡Ki cÖv_wgK agv©ejx:- •Re GwmWt •Re Gwm‡W g~jZ Kve©w·j g~jK ev mvj‡dvwbK GwmW g~jK _v‡K| †hgb- R-COOH, R- SO3H. D”PZi A¨vwj‡dwUK Kve©w·wjK GwmW‡K d¨vwU GwmWI ejv nq| KviY •Zj ev Pwe©‡K (C15 – C18) Av`ª© we‡kølY Ki‡j d¨vwU GwmW cvIqv hvq| ‡hgb- Pwe© ev •Zj + cvwb jNy ––– GwmW ‣Re GwmW + wMømvwib IUPAC ms‡KZ cÖPwjZ bvg bv‡gi Drm bv‡gi A_© HCOOH diwgK GwmW diwgKv (wcucov, †g․gvwQ, †evjZv, fxgiæj) diwgKv wcucovi j¨vwUb bvg CH3COOH A¨vwmwUwK GwmW A¨vwmUvg j¨vwUb A¨vwmUvg A_© wf‡bMvi ev wmiKv CH3CH2COOH ‡cÖvwc‡bvwqK GwmW ‡cÖvwcqbm ‡cÖvwcqbm (j¨vwUb bvg) A_© cÖ_g Pwe© CH3CH2CH2COOH weDUvwiK GwmW Butyrum gvL‡bi j¨vwUb bvg Butyrum CH3(CH2)16COOH w÷qvwiK GwmW w÷qvi cÖvwYR Pwe© I Dw™¢‡`i •Zj CH3(CH2)14COOH cvwgwUK GwmW cvg A‡qj cvg †Zj ‣Re Gwm‡Wi †f․Z ag©- cvwb‡Z `ªeYxq AYymg~‡ni g‡a¨ H e܇bi Kvi‡Y ùzUbvsK ‡ekx| `ye©j A¤ø WvBgvi wn‡m‡e _v‡K Kve©w·wjK Gwm‡Wi †kÖwYwefvM: Kve©w·wjK GwmW A¨vwj‡dwUK MVb Abymv‡i A¨v‡iv‡gwUK COOH g~j‡Ki msL¨v Abymv‡i cwjKve©w·wjK D`v: mvBwUªK GwmW, †g‡jwUK GwmW g‡bvKve©w·wjK WvBKve©w·wjK D`v: WvBKve©w·wjK GwmW, g¨v‡jvwbK GwmW, mvKwmwbK GwmW, MøyUvwgK GwmW, UviUvwiK GwmW, _¨vwjK GwmW m¤ú„³ Am¤ú„³ Am¤ú„³ d¨vwU Gwm‡Wi D`vniYALO bvg ms‡KZ g‡b ivLvi †K․kj A¨v‡µvwjK GwmW CH2=CHCOOH A wj‡bvwjK GwmW C17H31COOH L AwjwqK GwmW C17H33COOH O m¤ú„³ d¨vwU Gwm‡Wi mvaviY ms‡KZ CnH2n+1 COOH

CHEMISTRY PLUS •Re imvqb 613 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES WvB Kve©w·wjK GwmWt O My Son Go And Pray Sincerely And Silently GK ev‡K¨i cÖ_g eY© Øviv g‡b ivLv hvq| O=(HOOCCOOH) A·vwjK My=(HOOCCH2COOH) g¨v‡jwbK Son=(HOOC(CH2)2COOH) mvKwmwbK Go=(HOOC(CH2)3COOH) MøyUvwiK And=(HOOC(CH2)4COOH) A¨vwWwcK Pray=(HOOC(CH2)5COOH) wc‡gwjK Sincerly=(HOOC(CH2)7COOH) my‡ewiK And=(HOOC(CH2)6COOH) A¨vR‡jwqK Silently=(HOOC(CH2)8COOH) ‡mevwmK AviI `ywU WvB Kve©w·wjK Gwm‡Wi bvgt i) UviUvwiK GwmWt HOOC–(OH)CH–HC(OH)–COOH ii) _¨vwjK GwmWt C6H4–(COOH)2 (A¨v‡iv‡gwUK WvBKve©w·wjK GwmW) Item- 02t •Re RvZK cÖ¯‧wZ: Kve©w·wjK Gwm‡Wi OH g~jK wewfbœ †K›`ªvKl©x weKviK Øviv cÖwZ¯
vwcZ n‡q †hme †h․M Drcbœ nq Zv‡`i GwmW RvZK e‡j| Z = X, OR, NH2, OC || O – COR RCOH O OH + Z RCZ O GwmW GwmW RvZK: (i) GwmW n¨vjvBW (RCOX) (ii) GwmW A¨vbnvBWªvBW (RCOOCOR) (iii) G÷vi (RCOOR) (iv) GwmW A¨vgvBW (RCONH2)| G÷vi Gi cÖ¯‧wZ: RCOOH ROH Mvp H2SO4, ï®‥ HCl RCOCl ROH (RCO)2O ROH RCOOR wewfbœ G÷v‡ii bvg: AwaKvsk dzj I d‡j myMwÜi KviY A¨vwj‡dwUK G÷vi- ‡h d‡j we`¨gvb G÷v‡ii bvg G÷v‡ii ms‡KZ cvKv Kjv †c›UvBj A¨vwm‡UU G÷vi/A¨vgvBj A¨vwm‡UU CH3CO.OC5H11 cvKv Avbvim n-weDUvBj weDUv‡iU G÷vi C3H7CO.OC4H9 Rvg ev cxP dj B_vBj weDUv‡iU G÷vi C3H7CO.OC2H5 cvKv Kgjv AKUvBj A¨vwm‡UU G÷vi CH3CO.OC8H17 bvkcvwZ 3-wg_vBj weDUvBj B_v‡bv‡qU G÷vi CH3CO.OCH2CH2CH(CH3)2 cvKv Av‡cj AvB‡mvA¨vgvBj AvB‡mvf¨vjv‡iU (CH3)2CHCH2CO.OCH2CH2CH(CH3)2 †Rmwgb dzj †ebRvBj A¨vwm‡UU G÷vi CH3CO.OCH2C6H5 G÷vi kbv³KiY: †dwiK nvBWªvwgW cixÿv, G÷v‡ii mv‡_ nvBWªw·j A¨vwgb nvB‡Wªv‡K¬vivB‡Wi wewµqvq jvj‡P ev`vgx e‡Y©i †dwiK nvBWªvwg‡Wi Drcbœ nq| A¨vgvBW cÖ¯‧wZ: RCONH4 230C RCOOH CH3NH2 RCNH2 O O A¨vgvBW kbv³KiY: CH3CONH2 + H2O NaOH ––––– CH3COOH + NH3 NH3 + HCl NH4Cl (mv`v †avqv) GwmW RvZ‡Ki e¨envi: B_v‡bvwqK (A¨vwmwUK) Gwm‡Wi e¨envit †K¬v‡iv B_v‡bvwqK GwmW K…wl‡ÿ‡Î AvMvQv `g‡b e¨eüZ nq| B_vBj A¨vwm‡UU Gi e¨envit K…wÎg myMwÜ cÖ¯‧wZ‡Z I Pg© †iv‡Mi Jla wn‡m‡e †eb‡RvwqK GwmW I Gi †mvwWqvg jeY Gi e¨envit Lv`¨ I d‡ji im msiÿ‡Y| is Drcv`‡b (‡hgb- A¨vwbwjb eøy) G÷v‡ii e¨envit G÷vi wewfbœ K…wÎg myMÜKviK Ges `ªveK iƒ‡c e¨eüZ nq| A¨vmvBjn¨vjvB‡Wi e¨envi: A¨vwmUvB‡jkb ev B_v‡bvwq‡jkb Gi Kv‡R cÖavbZ A¨vwmUvBj †K¬vivBW e¨eüZ nq| -t Z_¨ KwYKv (HOT NEWS) t- Møvwmqvj ev weï× GwmwUK Gwm‡Wi ZvcgvÎv 16.7C| GwmW RvZ‡Ki mwµqZv ev A¤øag©xZvi µg- GwmW n¨vjvBW > GwmW A¨vbnvBWªvBW > G÷vi > GwmW A¨vgvBW| •Re Gwm‡W C = O g~jK _vKv m‡Ë¡I Kve©wbj g~j‡Ki †K›`ªvKl©x hyZ wewµqv †`q bv| diwgK GwmW GKvav‡i GwmW I A¨vjwWnvBW wn‡m‡e KvR K‡i| diwgK GwmW GKwU weRviK †h․M wKš‧ A¨vwmwUK Gwm‡Wi weRviY ag© †bB|

614 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES Short Ans Question SAQWRITTEN SUGGESTION BAQ Broad Ans Question cÖkœ-01: wKfv‡e cvIqv hvq, mgxKiYmn wjL? GwmW A¨vbnvBWªvBW †_‡K Kve©wjK GwmW- [RUET. 2019-20] DËi: C || O – O H2O C || O – OH NH3 C || O – NH2 Br+NaOH NH2 0 – 5C HCl+HNO2 N NCl H2O OH 2 cÖkœ-02: CH3COOH + NaHCO3 – [BUTex. 2003-04] DËi: CH3COOH + NaHCO3 CH3COONa + CO2 + H2O cÖkœ-03: wb‡¤œv³ ivmvqwbK c`v_©mg~‡ni g‡a¨ MV‡bi g~j cv_©K¨ D‡jøL Kit †ebRvgvBW I A¨vwmUvwbjvBW| [BUTex. 2004-05] DËi: †ebRvgvB‡Wi MVb PvwµK| Bnv †ebRwqK Gwm‡Wi RvZK| A¨vwmUvwbjvBW A¨vwmwUK Gwm‡Wi RvZK| cÖkœ-04: weï× I Abv`ª© GwmW‡K †Møvwmqvj B_v‡bvwqK GwmW e‡j| [BUTex. 2005-06] DËi: A¨vwmwUK| cÖkœ-05: mvKwmwbK I A¨vwWwcK Gwm‡Wi ms‡KZ wjL: [BUET. 2007-08; RUET. 2006-07] DËi: Dc‡i WvBKve©w·wjK Gwm‡Wi PvU©wU jÿ¨ Ki| cÖkœ-06: cvKv Kjv, Kgjv I Avbvi‡m wK ai‡bi •Re †h․M _v‡K? Zv‡`i bvg I ms‡KZ wjL| [BUTex. 2007-08, CUET. 2005-06] DËi: Dc‡i G÷v‡ii PvU©wU jÿ¨ K‡iv| cÖkœ-07: •Re †h․‡Mi Kve©w·jg~jK (COOH) Kxfv‡e kbv³ Ki‡e? [e.‡ev. 2015; w`.‡ev. 2016] DËi: Kve©w·j g~jK kbv³KiY: Kve©w·j g~jKhy³ Zij †h․‡M ev Rjxq `ªe‡Y Kve©‡bU ev evBKve©‡bU †hvM Ki‡j CO2 M¨v‡mi ey`ey` Drcbœ nq hv Pz‡bi cvwb‡K †Nvjv K‡i| RCOOH + NaHCO3 = RCOONa + CO2 + (ey`ey`) H2O ; Ca(OH)2 + (Pz‡bi cvwb) CO2 = CaCO3 + H2O (†Nvjv: A`ªeYxq CaCO3) cÖkœ-08: HCOOH A‡cÿv CH3COOH1 `ye©j GwmW †Kb A_ev ClCH2COOH GwmW CH3COOH A‡cÿv kw³kvjx GwmW †Kb? [iv.‡ev. 2019; gv`ªvmv †ev. 2019; P.‡ev. 2017] DËi: wg_vBj MÖæc B‡jKUªb `vb K‡i d‡j Gwm‡Wi kw³gvÎv K‡g Aciw`‡K †K¬vwib B‡jKUªb MÖnY K‡i d‡j Gwm‡Wi kw³gvÎv ev‡o| Gwm‡Wi kw³ e„w×i KviY: CH3 Ges Cl cÖkœ-09: wb‡¤œi wewµqv¸‡jvi g~j Drcv`Kmg~n wjL: [BUET- 2018-19] OH COO + CH3OH –––––––––– conc.H2SO4 ? DËi: OH COO + CH3OH –––––––––– conc.H2SO4 OH COOCH3 + H3O cÖkœ-10: wb‡¤œi wewµqvwU c~Y© Ki: [BUET- 2018-19] DËi: REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION DU 01. †Kvb Gwm‡Wi ZxeªZv me‡P‡q †ewk? [DU. 2018-19] A. CH3CH2COOH B. Cl CH2CH2COOH C. Cl2CH COOH D. CH3COOH mwVK DËi: C. Cl2CH COOH e¨vL¨v: •Re Gwm‡W A¨vjKvBj g~jK evo‡j Gwm‡Wi ZxeªZv K‡g Ges •Re Gwm‡W Zwor FYvZ¥K g~jK Cl evo‡j ZxeªZv ev‡oCH3COOH < CH2ClCOOH < CHCl2COOH < CCl3COOH 02. Ar-CHO weKviK (Reagent) H + /H2 ArCH(OH)COOH weKviKwU- [DU-Ka. 2014-15] A. RMgX B. HCN C. CH3Cl D. H2CO3 mwVK DËi: B. HCN e¨vL¨v: –CN g~jK‡K Av`ª© we‡kølY Ki‡j –COOH g~jK •Zix n‡e| ZvB cÖ_g Drcv`wU‡Z –CN g~jKhy³ n‡e| myZivs weKviKwU n‡e HCN Ar–CHO HCN ––––Ar– OH | C | H –CN H + /H2O ––––– Ar– OH | C | H –COOH 03. B_vBj A¨vwm‡UU‡K ÿvixq Av`ª©-we‡kølY Ki‡j †Kvb Drcv`¸‡jv •Zix nq? [DU-Ka. 2014-15] A. CH3COOH +C2H5OH B.CH3CH2COOH +CH3OH C. CH3COONa +CH3OH D. CH3COONa +C2H5OH mwVK DËi: D. CH3COONa +C2H5OH e¨vL¨v: B_vBj A¨vwm‡UU‡K ÿvixq Av`ª© we‡køl‡Yi mgq OH– Avq‡bi nvi wbY©vqK av‡c cÖfveK wn‡m‡e KvR K‡i| CH3COOC2H5(l)+H2O(l) OH– CH3COOH(aq)+C2H5OH(aq) Drcbœ CH3COOH Gi mv‡_ OH– Avqb wewµqv K‡i jeY I cvwb •Zix K‡i| CH3COOH(aq) + NaOH(aq) CH3COONa(aq) + H2O(aq) 04. GwmW †K¬vivB‡Wi mv‡_ A¨v‡gvwbqv ev cÖvBgvwi A¨vwgb wewµqv Ki‡j Kx Drcbœ nq? [DU.2011-2012; BUET.2012-13] A. acid amide B. organic acid C. alcohol D. aldehyde

CHEMISTRY PLUS •Re imvqb 615 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES mwVK DËi: A. acid amide e¨vL¨v: A¨vwg‡bi mv‡_ A¨vwmUvBj †K¬vivBW (H3CCOCl) A_ev A¨vwmwUK A¨vbnvBWªvBW wewµqv K‡i A¨vwmU¨vgvBW •Zwi Ki‡j G wewµqv‡K A¨vwmUvB‡jkb (Acetylation) e‡j| †hgb-GwmW †K¬vivB‡Wi mv‡_ A¨v‡gvwbqv ev cÖvBgvwi A¨vwgb wewµqv Ki‡j Acid amide Drcbœ nqCH3 – COCl + NH3 CH3CONH2 + HCl 05. B_vbj‡K kw³kvjx RviK Øviv RvwiZ Ki‡j wb‡Pi †Kvb †h․MwU •Zwi nq? [DU.07-2008] A. CH3CHO B. CH3COOH C. CH3CH2OOCCH3 D. CH3CH3 mwVK DËi: B. CH3COOH e¨vL¨v: B_vbj‡K kw³kvjx RviK wgwkªZ K‡i DËß Ki‡j B_vbj RvwiZ n‡q cÖ_‡g B_vb¨vj, c‡i B_v‡bvwqK GwmW Drcbœ nq| JnU 01. †gvg †Kvb ai‡bi c`v_©? [JnU. 2016-17] A. ÿviK B. G÷vi C. jeY D. GwmW mwVK DËi: B. G÷vi e¨vL¨v: ‡gvg GKwU D”PZi nvB‡WªvKve©b G÷vi| 02. wb‡gœi †KvbwU B_vbj (C2H5OH) Ges B_v‡bvwqK Gwm‡Wi (CH3COOH) mv‡_ wewµqv K‡i? [JnU.2006-2007; JnU.2007-08] A. CaCO3 B. CuO C. Na D. ZnSO4 mwVK DËi: C. Na e¨vL¨v: C2H5OH+NaC2H5ONa+H2 CH3COOH + Na CH3COONa+H2 03. •Re †h․‡Mi weï×Zv †KvbwUi gva¨‡g wbY©q Kiv nq? [JnU.2005-2006] A. `nb B. `ªve¨Zv wbY©q C. Mjbv¼ wbY©q D. mv›`ªZv wbY©q mwVK DËi: C. Mjbv¼ wbY©q e¨vL¨v: †R‡b ivL- GKwU weï× ‣Re †h․M 1C ZvcgvÎvi g‡a¨ m¤ú~Y© M‡j hvq| JU 01. †KvbwU Am¤ú„³ d¨vwU Gwm‡Wi D`vniY? [JU-D: 2019-20] A. w÷qvwiK B. cvwgwUK C. wj‡bvwjK D. †cÖvcv‡bvwqK mwVK DËi: C. wj‡bvwjK 02. Kve©w·wjK A¨vwmW mvaviYZ wK ai‡bi wewµqv †`q?[JU-A, Set-D. 2019-20] A. B‡jK‡UªvwdwjK ms‡hvRb B. wbDwK¬IwdwjK ms‡hvRb C. B‡jK‡UªvwdwjK cÖwZ¯
vcb D. wbDwK¬IwdwjK cÖwZ¯
vcb mwVK DËi: A. B‡jK‡UªvwdwjK ms‡hvRb e¨vL¨v: nvRvix NCTB Gi e¨vL¨v `ªóe¨| 03. †Kvb m¤ú„³ d¨vwU Gwm‡Wi D`vniY? [JU-D, Set-A. 2019-20] A. A¨v‡µvwjK B. AwjwqK C. wj‡bvwjK D. cvwgwUK mwVK DËi: D. cvwgwUK 04. GwmW RvZ‡Ki g‡a¨ me©vwaK mwµq †KvbwU? [JU-D7.2017-18; RU.2009-10, 12-13, JU. 2014-15] A. CH3COCl B. CH3COOC5H17 C. CH3CONH2 D. C6H5NH2 mwVK DËi: A. CH3COCl e¨vL¨v: GwmW †K¬vivBW > A¨vbnvBWªvBW > G÷vi > A¨vgvBW| 05. B_vBj †ebwRb RviY Ki‡j Drcbœ nq- [JU-D: 2014-15] A. m¨vwjmvBwjK GwmW B. †dbj C. †eb‡RvwqK GwmW D. wcKwiK GwmW mwVK DËi: C. †eb‡RvwqK GwmW e¨vL¨v: B_vBj †ebwRb‡K kw³kvjx RviK †hgb- KMnO4 mn RvwiZ Ki‡j ‣Zix n‡e †eb‡RvwqK GwmW| 06. CN ? COOH Gi †ÿ‡Î wb‡gœi †KvbwU N‡Ut [JU.2009-2010] A.weRviY B.A¨vgvB‡jkb C.A¨vjKvB‡jkb D.Av`ª©-we‡kølY mwVK DËi: D.Av`ª©-we‡kølY e¨vL¨v: ‡h †Kvb mvqvbvBW‡K Av`ª© we‡kølY Ki‡j ‣Re GwmW cvIqv hvq| RU 01. wb‡Pi PviwU •Re Gwm‡Wi g‡a¨ †KvbwU me‡P‡q `–e©j? [RU-F. 2015-16] A. H-COOH B. CH3COOH C. Cl.CH2COOH D. Cl2CHCOOH mwVK DËi: B. CH3COOH e¨vL¨v: Gwm‡Wi kw³µg, Cl2CHCOOH > ClCHCOOH > HCOOH > CH3COOH [Gwm‡W †K¬vwi‡bi msL¨v e„w×i mv‡_ mv‡_ Gwm‡Wi ZxeªZv †e‡o hvq|] 02. wb‡gœv³ †KvbwU me‡P‡q †ekx A¤øxq? [RU-H. 2015-16; JU.2010-11; RU.2009-10, 25006-07] A. CH3 – COOH B. HCOOH C. ClCH2 – COOH D. CH3COCH3 mwVK DËi: C. ClCH2 – COOH e¨vL¨v: ‣Re GwmW mg~‡ni ‡ÿ‡Î †K¬vwi‡bi msL¨v e„w×i mv‡_ mv‡_ ZxeªZv ev‡o| 03. MVb Abyhvqx BDwiqv GKwU- [RU-H. 2015-16, CU. 2012-13] A. A¨vgvBW B. A¨vbnvBWªvBW C. G÷vi D. Kve©wbj mwVK DËi: A. A¨vgvBW 04. weDUvBj G¨vwm‡UU G÷vi mvaviYZ †Kvb Gw›Uev‡qvwU‡Ki `ªveK wnmv‡e e¨eüZ nq? [RU.2012-2013; JU:2011-12] A. †cwbwmwjb D. GivB‡_ªvgvBwmbB. †UUªvmvBwK¬b C. wm‡cÖv‡d¬v·vwmb mwVK DËi: A. †cwbwmwjb e¨vL¨v: G÷v‡ii e¨envit i. G÷vi wewfbœ K…wÎg myMÜKviKiƒ‡c e¨eüZ nq| ii. •Zj, is, evwb©k, Mvg, †mjy‡jvR cÖf„wZi `ªveKiƒ‡c G÷vi e¨eüZ nq| weDUvBj A¨vwm‡UU Ô‡cwbwmwjbÕ Gi `ªveK wn‡m‡e e¨eüZ nq| GQvov †iwRb, cøvw÷K cÖf„wZi DËg `ªveKiƒ‡c G÷v‡ii e¨envi Av‡Q| iii. Lv`¨ I cvbxq e¯‧ my¯^v`y Ges myMÜhy³ Kivi Rb¨I G÷vimg~n e¨eüZ nq| 05. G÷vi‡K LiAlH4 Øviv weRvwiZ Ki‡j Drcbœ nqt [RU.2009-2010] A. A¨vgvBW B. A¨vj‡Kb C. A¨vj‡Kvnj D. A¨vjwWnvBW mwVK DËi: C. A¨vj‡Kvnj e¨vL¨v: †mvwWqvg I B_vb‡ji wgkª‡Y Drcbœ Rvqgvb nvB‡Wªv‡Rb A_ev LiAlH4 Øviv B_vBj B_v‡bv‡qU weRvwiZ n‡q B_vbj Drcbœ K‡i| CH3COOC2H5 LiAlH4 H3CCH2OH + C2H5OH 06. cvKv d‡ji myM‡Üi KviY- [RU.2008-09; RU-F. 2015-16, JU. 2011-12,2009- 10; KU.2016-17; JUST-A: 2018-19] A. cwj A¨v‡iv‡gwUK Góvi B. A¨vwj‡dwUK Góvi C. wfUvwgb D. A¨vj‡Kvnj mwVK DËi: B. A¨vwj‡dwUK Góvi 07. †Kvb wewµqKwU A¨vwmwUK Gwm‡Wi wg_vBj MÖæc‡K AvµgY Ki‡e? [RU.2006-07; CU-2007-08] A. PCl3 B. PCl5 C. Cl2 D. Na mwVK DËi: C. Cl2 e¨vL¨v: A¨vwmwUK Gwm‡Wi ivmvqwbK wewµqvi KwZcq Z_¨- Cl2/Br2 Gi mv‡_ n¨v‡jvB_v‡bvwqK GwmW Drcbœ K‡i H3COOH + Cl2 Cl.CH2 – COOH KMnO4 Øviv RvwiZ nq bv| H2SO4 Øviv wbiæ`&b N‡Ubv| Zvcxq fv‡e myw¯
Z|

616 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 08. Glacial Acetic Acid †Kvb ZvcgvÎvq ei‡di gZ R‡g hvq? [RU. 2006-07, 2010-11] A. 16.7°K B. 16.7°C C. 20° C D. 21°C mwVK DËi: B. 16.7°C e¨vL¨v: 100% weï× Acetic Acid †K 16.7° C ZvcgvÎvq kxZj Ki‡j wngvwqZ ei‡di b¨vq KwVb AvKv‡i RgvU ev‡a e‡j G‡K Glacial Acetic Acid e‡j| CU 01. wb‡gœi †Kvb M¨vm-‡K Pz‡bi cvwbi g‡a¨ Pvjbv Ki‡j Zv †Nvjv‡U nq? [CU-1. 2016-17] A. NH3 B. CO2 C. NO3 D. CO E. O2 mwVK DËi: B. CO2 02. B_v‡bvwqK GwmW I Rjxq NaHCO3 Gi wewµqvq CO2 Gi ey`ey` •Zix nq| GLv‡b CO2 Gi Kve©bwU Av‡m | [CU. 2014-15] A. B_v‡bvwqK GwmW n‡Z B. NaHCO3 n‡Z C. evqy n‡Z D. B_v‡bvwqK GwmW I NaHCO3 Dfq n‡Z E. †KvbwUB mwVK bq mwVK DËi: B. NaHCO3 n‡Z 03. wb‡Pi †Kvb& †h․MwU‡Z AwjwdwbK wØeÜb Av‡Q? [CU. 2014-15] A. •Zj B. Pwe© C. mvevb D. Kve©wjK GwmW E. UjyBb mwVK DËi: A. •Zj e¨vL¨v: •Zj nj Am¤ú„³ Gwm‡Wi wMømvivBj UªvB G÷vi| 04. †Kvb †h․MwU NaHCO3 `ªe‡Yi mv‡_ wewµqv K‡i CO2 m„wó K‡i bv? [CU. 12-2013] A. Salicylic GwmW B. Carbolic GwmW C. Benzoic GwmW D. 4-nitrobenzoic GwmW E. Acetic GwmW mwVK DËi: B. Carbolic GwmW 05. †KvbwU cvwgwUK GwmW? [CU.2008-2009] A. C17H35COOH B. C15H31COOH C. C17H35COONa D. C17H33COOH E. C17H35COOK mwVK DËi: B. C15H31COOH 06. CH3-COOH Pv‡ci cÖfv‡e H2 Gi mv‡_ †Kvb cÖfve‡Ki mvwbœ‡a¨ DËß n‡q C2H6 Drcbœ K‡i? [CU.2006-07, 07-08] A. Pt B.Al C. Ni D. Al2O3 mwVK DËi: C. Ni e¨vL¨v: ‣Re GwmW‡K HCl ev H2/Ni D”P Pv‡c Øviv weRviY Ki‡j A¨vj‡Kvnj cvIqv hvq| RCOOH+[H] Ni/H2 ––––– R–CH2OH wKš‧ •Re GwmW wb‡Kj cÖfve‡Ki Dcw¯
wZ‡Z nvB‡Wªv‡R‡bi mv‡_ DËß n‡q A¨vj‡Kb •Zwi K‡i| CH3–COOH+[H] Ni/H2 ––––– CH3-CH3 GLv‡b DËvc ev fv½‡bi d‡j G NUbv N‡U| KU 01. wb‡Pi PviwU Kve©w·wjK GwmW RvZ‡Ki g‡a¨ †KvbwU Kg mwµq? [KU-A.2017-18] A. R-CONH2 B. RCO2R C. (R-CO)2O D. RCOCl mwVK DËi: A. R-CONH2 e¨vL¨v: GwmW RvZKmg~‡ni mwµqZvi µg : RCOCl > R(CO)2O > RCO2R > RCONH2 02. Zij •Re †h․‡Mi weï×Zvi gvb`Ð- [KU.2012-2013] A. Mjbv¼ B. Av‡cwÿK ¸iæZ¡ C. ùzUbv¼ D. Pvc mwVK DËi: C. ùzUbv¼ IU 01. †Kvb& weKviwU B_vbj I B_vbwqK GwmW Df‡qi mv‡_ wewµqv _vK‡e? [IU. 19-20] A. NaOH B. Na C. Na2CO3 D. K2Cr2O7 mwVK DËi: B. Na 02. UK¯^v`hy³ gvL‡b cvIqv hvq- [IU-F,Set-B:2018-19] A. diwgK GwmW B. cvwgwUK GwmW C. A¨vwmwUK GwmW D. weDUv‡bvwqK GwmW e¨vL¨v: diwgK GwmW cvIqv hvq wccov †_‡K Ges weDUv‡bvwqK GwmW cvIqv hvq evUvi †_‡K| 03. CH3CH2COOH H + A+H2O, A ‡h․MwU nj- [IU.2011-12] A. CH3COOC2H5 B. CH3CH2COOCH2CH3 C. CH3CH2COOCH3 D. CH3COOCH3 Ans: Blank e¨vL¨v: CH3CH2COOH + HOOCCH2CH3 H + –– CH3CH2COOOCCH2CH3 + H2O DU-7Clg 01. Nb H2SO4 cÖfve‡Ki Dcw¯
wZ‡Z A¨vwmwUK A¨vwmW wg_vBj A¨vj‡Kvn‡ji m‡½ wewµqv K‡i †Kvb †h․MwU •Zwi nq? [DU-7clg. 2018-19] A. HCO2CH3 B. HCO2C2H5 C. CH3CO2CH3 D. CH3CO2C2H5 e¨vL¨v: CH3COOH+CH3OH H2SO4 (Nb) –––––––– CH3COOCH3+H2O A¨vwmwUK GwmW wg_vbj wg_vBj A¨vwm‡UU STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION SUST 01. wb‡Pi †KvbwUi A¤øZ¡ me‡P‡q †ewk? [SUST-B,2018-19] A. CH3CH2CH2CH2-COOH B. CH3CH2CH(Cl)CH2-COOH C. CH3CH2CH(Cl)CH(F)-COOH D. CH3CH2CH(F)CH(Cl)-COOH E. CH3CH2CH(CH3)CH(Cl)-COOH mwVK DËi: C. CH3CH2CH(Cl)CH(F)-COOH e¨vL¨v: AwaK Zwor FbvZ¥K cigvYy -COOH g~j‡Ki hZ KvQvKvwQ n‡e •Re Gwm‡Wi mwµqZv ZZ †ewk n‡e| 02. †Kvb hyMj •Re †h․M n‡Z G÷vi •Zwi Kiv †h‡Z cv‡i? [SUST-B.16-17] A. •Re GwmW Ges A¨vj‡Kvnj B. wK‡Uvb Ges A¨vj‡Kvnj C. A¨vjwKb Ges wK‡Uvb D. GwmW Ges ÿviK E. ‡dbj Ges ‣Re GwmW mwVK DËi: A. •Re GwmW Ges A¨vj‡Kvnj e¨vL¨v: CH3COOH + CH3-CH2-OH CH3COOCH2-CH3 + H2O 03. A GKwU A¨v‡iv‡gwUK †h․M hv †mvWvjvBg (NaOH + CaO) w`‡q we‡qvwRZ Ki‡j B ‡h․M Drcbœ nq hv g„`y A¤øxq Ges hvi AvbweK fi 94| A ‡h․MwU n‡jv - [SUST.2012-2013] A. †eb‡RvwqK GwmW B. 4-nvBWªw· †eb‡RvwqK GwmW C. 2,4-WvBnvBWªw·†eb‡RvwqK GwmW D. 4-nvBWªw· UjyBb E. 4-nvBWªw· Av‡qv‡Wv †ebwRb mwVK DËi: B. 4-nvBWªw· †eb‡RvwqK GwmW e¨vL¨v: [C6H5OH = 12 6 + 1 5 + 161+1 = 94] COOH OH OH + †mvWvjvBg (NaOH + CaO) + Na2CO3

CHEMISTRY PLUS •Re imvqb 617 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 04. B_v‡bvwqK A¨vbnvBWªvBW I B_vbj wewµqv Ki‡j wb‡gœv³ †Kvb& †h․M Drcbœ nq? [SUST 2011-2012] A. wg_vBj B_vb‡qU B. weDUvBj B_vb‡qU C. †cÖvcv‡bvb D. B_vBj B_vb‡qU E. weDUvbj mwVK DËi: D. B_vBj B_vb‡qU e¨vL¨v: GwmW A¨vbnvBWªvB‡Wi m‡½I A¨vj‡Kvn‡ji wewµqvq G÷vi Drcbœ nq| †hgbCH3– O || C –O– O || C –CH3+HO–C2H5CH3– O || C –OC2H5+CH3COOH 05. A¨vwbwjb †_‡K A¨vwmUvwbjvBW •Zwi‡Z †Kvb wewµqKwU e¨envi Kiv nq? [SUST.10-11] A. A¨vwm‡Uvb B. A¨vwmUvjwWnvBW C. A¨vwmUvBj‡K¬vivBW D. me¸‡jv mwVK DËi: C. A¨vwmUvBj‡K¬vivBW e¨vL¨v: A¨vwbwj‡bi mv‡_ A¨vwmwUK A¨vbnvBWªvBW ev A¨vwmUvBj †K¬vivBW wewµqv K‡i A¨vwmU¨vwbjvBW MVb K‡i| wewµqvt ‡R‡b ivLv fvjt 1 0 I 2 0 A¨vwgb A¨vmvBj n¨vjvBW ev GwmW A¨vbnvBWªvB‡Wi mv‡_ wewµqv K‡i cÖwZ¯
vwcZ A¨vgvBW I nvB‡Wªv‡Rb n¨vjvBW Drcbœ K‡i| 3 0 A¨vwgb G wewµqv †`q bv| 06. C6H5COCl Gi Kve©wbj g~j‡K †Kvb ai‡Yi wewµqv msMwVZ nq? [SUST-B 93-94] A. B‡jK‡UªvwdwjK A¨vjKvBj cÖwZ¯
vcb B. wbDwK¬IwdwjK A¨v‡iv‡gvwUK cÖwZ¯
vcb C. B‡jK‡UªvwdwjK A¨v‡iv‡gwUK cÖwZ¯
vcb D. B‡jK‡UªvwdwjK A¨vmvBj cÖwZ¯
vcb E. wbDwK¬IwdwjK A¨vmvBj cÖwZ¯
vcb| mwVK DËi: E. wbDwK¬IwdwjK A¨vmvBj cÖwZ¯
vcb| JUST 01. Rvg ev wcP d‡j †Kvb G÷vi cvIqv hvq? [JUST-B.17-18; JU.14-15) A. A¨vgvBj A¨vwm‡UU B. AKUBj A¨vwm‡UU C. B_vBj weDUv‡iU D. ‡ebRvBj A¨vwm‡UU mwVK DËi: C. B_vBj weDUv‡iU 02. Kve©w·wjK Gwm‡Wi mv‡_ A¨v‡gvwbqvi wewµqvi mgq Zvc cÖ‡qvM Ki‡j wK Drcbœ nq? [JUST-B. 2016-17] A. A¨vj‡Kvnj B. A¨vjwWnvBW C. A¨vwmUvgvBW D. A¨vbnvBWªvBW mwVK DËi: C. A¨vwmU¨vgvBW e¨vL¨v: R-COOH + NH3 R-CONH2 + H2O 03. Avbvi‡mi we`¨gvb wgwó MÜ wb‡gœi †KvbwUi Kvi‡Y nq? [JUST-B. 2016-17, MBSTU. 2013-14] A. B_vBj weDUvb‡qU B. ‡c›UvBj B_vb‡qU C. wg_vBj weDUvBj B_vb‡qU D. AKUvBj B_vb‡qU mwVK DËi: A. B_vBj weDUvb‡qU MBSTU 01. Kv‡e©vw·wjK Gwm‡Wi kbv³Ki‡Y e¨eüZ nq †KvbwU? [MBSTU-A. 19-20] A. FeCl3 `ªeY B. NaHCO3 `ªeY C. NH3 `ªeY D. DNP mwVK DËi: B. NaHCO3 `ªeY e¨vL¨v: CH3COOH + NaHCO3 CH3COONa + CO2 + H2O 02. Kve©w·j g~jK kbv³Ki‡Y e¨eüZ nq †KvbwU? [MBSTU-A1.2017-18] A. 5%NaHCO3 `ªeY B. 5%Br2 `ªeY C. ‡dwjs `ªeY D. U‡jb weKviK mwVK DËi: A. 5%NaHCO3 `ªeY e¨vL¨v: 5% NaHCO3 `ªeY Øviv Kve©w·j g~jK (-COOH) n‡Z CO2 Gi ey`ey` •Zix n‡e| 03. ‡Kvb •Re GwmWwU me‡P‡q kw³kvjx? [MBSTU-C2.2017-18; Dat:2010-11] A. CCl3 – COOH B. CH3 – COOH C. CH3CH2 – COOH D. CH2Cl – COOH mwVK DËi: A. CCl3 – COOH e¨vL¨v: ‣Re Gwm‡Wi mwµqZv Kve©b msL¨v e„w×i mv‡_ mv‡_ n«vm cvq Ges n¨v‡jv‡Rb cigvYyi msL¨v e„w×i mv‡_ mv‡_ e„w× cvq| BSMRSTU 01. wd«-†iwW‡Kj wb‡¤œi †Kvb wewµqvi †gKvwbR‡g Ask †bq? [BSMRSTU-C. 2019-20] A. cÖwZ¯
vcb wewµqv B. weRvib wewµqv C. cwjgviKiY wewµqv D. Rvib wewµqv mwVK DËi: A. cÖwZ¯
vcb wewµqv 02. cvKv Kgjvq _v‡K Ñ [BSMSTU-H.2016-17] A. ‡ccUvBj Gwm‡UU G÷vi B. weDUvBj weDUv‡iU G÷vi C. A±vBj Gwm‡UU G÷vi D. †KvbwUB bq mwVK DËi: C. A±vBj Gwm‡UU G÷vi PUST 01. B_vb¨vgvBW‡K P2O5 Gi m‡½ DËß Ki‡j †Kvb †h․M Drcbœ nq? [PBSTU-A1/A2.2016-17;RU.07-08] A. CH3COOH B. (CH3CO)2O C. CH3CN D. CH3CH2NH2 mwVK DËi: C. CH3CN e¨vL¨v: CH3CONH2 + P2O5 CH3CN + H2O HSTU 01. Pwe©‡Z †Kvb •Re GwmW _v‡K? [HSTU-D.2017-18; JU.D-2014-15) A. diwgK GwmW B. A¨vwmwUK GwmW C. ‡cÖvwcqwbK GwmW D. cvwgwUK GwmW mwVK DËi: C. ‡cÖvwcqwbK GwmW e¨vL¨v: Pwe©‡Z †cÖvwcqwbK GwmW (CH3CH2COOH) I w÷qvwiK GwmW (CH3(CH2)16COOH) _v‡K| DU Technology 01. CH3COOC3H7 †K Rjxq NaOH Øviv Av`ª©we‡kølY Ki‡j wb‡¤œi †Kvb †h․MwU •Zwi nq? [DU-Projukti. 2019-20] A. CH3OH B. C3H7OH C. C3H7COOH D. C3H7COONa mwVK DËi: B. C3H7OH 02. C2H5OH RvwiZ n‡q Z •Zwi nq| C2H5OH Gi mv‡_ Z wewµqv K‡i G÷vi •Zwi K‡i| Z Kx? [DU-Projukti. 2019-20] A. HCOOH B. CH3COOH C. CH3CH2COOH D. CH3COOl2H5 mwVK DËi: B. CH3COOH STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION BUET 01. mv`v wf‡bMvi `ªeYwU nj- [BUET: 2012-2013] A. A¨vwmwUK Gwm‡Wi 1% Rjxq `ªeY B. diwgK Gwm‡Wi 1% Rjxq `ªeY C. A¨vwmwUK Gwm‡Wi 5% Rjxq `ªeY D.diwgK Gwm‡Wi 5% Rjxq `ªeY mwVK DËi: C. A¨vwmwUK Gwm‡Wi 5% Rjxq `ªeY e¨vL¨v: A¨vwmwUK Gwm‡Wi 6-10% Rjxq `ªeY‡K wf‡bMvi ev mv`v wf‡bMvi e‡j| 02. wg_vBj mvqvbvBW Av`ª© we‡køwlZ n‡j wK Drcbœ nq? [BUET: 2011-2012] A. wg_vb¨vj B. wg_v‡bvwqK GwmW C. diwgK GwmW D. B_v‡bvwqK GwmW NH2 NHCOCH3 + CH3COCl + HCl 3 + HCl

618 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES mwVK DËi: D. B_v‡bvwqK GwmW e¨vL¨v: CH3CN + 2H2O H + –– CH3COOH + NH3 03. UªvBKve©w·wjK Gwm‡Wi GKwU D`vniY n‡jv- [BUET: 2007-2008] A. m¨vwjmvBwjK GwmW B. mvBwUªK GwmW C. cÖvcv‡bvwqK GwmW D. wmbvwgK GwmW mwVK DËi: B. mvBwUªK GwmW CUET 01. ‡ebwR‡b `ªexf‚Z Ae¯
vq †Kvb †h․M WvBgvi MVb K‡i? [CUET. 2015-16] A.CH2= CHCl B. CHCl C. H2O D. CH3COOH E. NH3 mwVK DËi: D. CH3COOH e¨vL¨v: †ebwR‡b `ªexf‚Z Ae¯
vq B_v‡bvwqK GwmW WvBgvi MVb K‡i| `yB AYy CH3COOH Gi GKwUi Aw·‡Rb cigvYy AciwUi H-cigvYyi mv‡_ Ges AciwUi Aw·‡Rb D³ cigvYyi mv‡_ nvB‡Wªv‡Rb eÜb Øviv hy³ n‡q WvBgvi MVb K‡i| B_v‡bvwqK Gwm‡Wi (CH3COOH) WvBgvi H3C– C C–C H3 O–H O O H–O 02. wb‡Pi cÖkœ¸‡jv †_‡K mwVK DËi †e‡Q bvI| [CUET. 2014-15] i) wb‡Pi †Kvb †h․MwU mvevb wk‡í DcRvZ wnmv‡e cvIqv hvq? ii) A¨vmwcwib Gi MvVwbK ms‡KZ †KvbwU? A. Oxalic acid; B. Glycerol; C. Oil; D. Fat; mwVK DËi: B. BUTex 01. ‡KvbwU wKWbx‡K A‡K‡Rv K‡i? [BUTex. 2014-15] A. mvqv‡bvBDwiK GwmW B. dwjK GwmW C. j¨vKwUK GwmW D. GmKiweK GwmW mwVK DËi: A. mvqv‡bvBDwiK GwmW STEP 04 ANALYSIS OF MEDICAL & HSC QUESTION MAT 01. cvKv Kjvq wb‡Pi †KvbwU _v‡K? [MAT- 2018-19, HSTU-D.2017-18; JU-D7.2017-18; CU.2007-08, 06-07] A. †c›UvBj Gwm‡UU G÷vi B. AKUvBj Gwm‡UU G÷vi C. weDUvBj weDUv‡iU G÷vi D. †ebRvBj Gwm‡UU G÷vi mwVK DËi: A. †c›UvBj Gwm‡UU G÷vi 02. B_v‡bvwqK GwmW WvB †mvwWqvg m‡ëi AvYweK fi wb‡”i †KvbwU? [MAT.09-10] A. 134 B. 124 C. 154 D. 144 mwVK DËi: A. 134 e¨vL¨v: NaCOO-COONa C2+04+Na2=122+164+232=134 03. †Kvb Dw³wU mZ¨ bq? [MAT. 2006-07] A. G÷v‡ii ms‡KZ RCOOR; GLv‡b R I R n‡jv A¨vjKvBj A_ev A¨vivBj g~jK B. `ywU s AiweUv‡ji Awaµg‡Y me mgq wmMgv eÜb m„wó nq C. 1, 2, 3 G wZb †kÖwYi g‡bvnvBwWªK A¨vj‡Kvn‡ji g‡a¨ cv_©K¨ wbY©‡q jyKvm weKviK e¨eüZ nq D. s eøK †g․jmg~‡ni Zzjbvq d-eøK †g․jmg~‡n avZe eÜb Kg kw³kvjx mwVK DËi: D. s eøK †g․jmg~‡ni Zzjbvq d-eøK †g․jmg~‡n avZe eÜb Kg kw³kvjx 04. KuvPv dj UK nq †h R‡b¨- [MAT. 2004-05] A. •Re GwmW B. ÷vP© C. †mjy‡jvR D. d«zK‡UvR mwVK DËi: A. •Re GwmW 05. C6H5CONH2 Øviv Avgiv eywS? [MAT.2003-2004) A. A¨vgvBW B. A¨vwbwjb C. ‡ebRvgvBW D. B_vb¨vgvBW mwVK DËi : C. ‡ebRvgvBW 06. ‡KvbwU g‡bvKv‡e©vw·wjK GwmW bq? [MAT.2003-2004] A. CH3(CH2)3-COOH B. CH3(CH2)2-COOH C. CH3-COOH D. HOOC–COOH mwVK DËi : D. HOOC–COOH e¨vL¨v: †h Gwm‡W GKwU Kve©w·wjK g~jK we`¨gvb Zv‡K g‡bvKve©w·wjK GwmW e‡j| HOOC–COOH G `ywU Kve©w·wjK GwmW we`¨gvb| 07. HCOOH Gi Drm †KvbwU? [MAT. 2003-04] A. diwgKv B. GwmUvg C. cÖcvqbvm D. weDUvBivg mwVK DËi: A. diwgKv 08. A¨vwmUvBj †Kvwjb G÷v‡iR f~wgKv iv‡L? [MAT.2002-03] A. ‡M․Y †h․b •ewkó¨ cÖKv‡k B. ms‡kø‡l C. mœvqy DÏxcbv en‡b D. dmdivm wecv‡K mwVK DËi : B. ms‡kø‡l e¨vL¨v: A¨vwmUvBj †Kvwjb G÷v‡iR ATP ms‡køl‡Y fywgKv iv‡L| D‡jøL¨ Bnv GKwU GbRvBg hv A¨vwmUvBj †Kvwj‡bi Dci KvR K‡i| DAT 01. G÷v‡ii A¤øxq Av`©ª-we‡køl‡Y wK Drcbœ nq- [DAT. 2017-18] A. ‣Re GwmW B. LwbR GwmW C. A¨vjwWnvBW D. wK‡Uvb mwVK DËi: A. ‣Re GwmW e¨vL¨v: G÷v‡ii A¤øxq Av`© ª we‡køl‡Y •Re GwmW I A¨vj‡Kvnj •Zix nq| 02. Abv`ª© AlCl3 Gi Dcw¯
wZ‡Z †ebwRb Gi mv‡_ A¨vwmUvBj †K¬vivBW Gi wewµqvq †Kvb †h․MwU Drcbœ nq? A. ‡eb‡Rv‡dbb B. Gwm‡Uv‡dbb C. UjyBb D. A‡_©v‡K¬v‡ivUjyBb E. A¨vwmwUK GwmW mwVK DËi: B. Gwm‡Uv‡dbb COCH3 e¨vL¨v: + CH3COCl 3 AlCl + HCl PART 11 A¨vwgb m¤úwK©Z Z_¨vewj Item- 01t A¨vwg‡bi cÖv_wgK agv©ejx- mvaviY ZvcgvÎvq C1–C3 A¨vwgb¸‡jv eY©nxb M¨vm, D”PZi A¨vwgbmg~n Zij A_ev KwVb| A¨vwj‡dwUK A¨vwgbmg~n gv‡Qi Auvk‡Ui b¨vq MÜhy³| A¨v‡iv‡gwUK A¨vwgbmg~n mvaviYZ †ek ÿwZKi| A¨vwbwjb GKwU welv³ Zij c`v_©| kix‡ii Dci A¨vwbwj‡bi welwµqv Av‡Q| OCOCH3 COOH OCOC COOH OCONH2 COCl OCONH2 COOH 0

CHEMISTRY PLUS •Re imvqb 619 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES A¨vwg‡bi †kÖwYweb¨vm : A¨v‡gvwbqv cÖwZ¯
vc‡Ki msL¨v Abymv‡i cÖvBgvwi A¨vwgb RNH2 (1) †m‡KÛvwi A¨vwgb R2NH (2) Uviwkqvwi A¨vwgb R3N (3) †KvqvUvibvwi A¨v‡gvwbqvg jeY R4NX A¨vwg‡bv g~j‡Ki msL¨v Abymv‡i g‡bv A¨vwgb WvB A¨vwgb cwj A¨vwgb – MVb Abymv‡i A¨vwj‡dwUK A¨v‡iv‡gwUK PvwµK – A¨vwg‡bi ÿviK‡Z¡i µg: 2 o > 1o > 3o > NH3 > Ar – NH2 R2 – NH > R – NH2 > R3 – N > NH3 > Ar – NH2 CH3 – NH – CH3 > CH3 – NH2 > (CH3)3N > NH3 > C6H5 – NH2 Item- 02t A¨vwg‡bi ivmvqwbK agv©ejxtÑ G PvU©wU ïaygvÎ BwÄwbqvwis fwZ© cixÿvi Rb¨-

620 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES Item- 03t A¨vwg‡bv MÖæ‡ci Kvh©Kix g~jK Gi cwieZ©b: Rule-01: CN (mvqv‡bv) H2O/H+ LiAlH4 COOH (•Re GwmW) CH2NH2 (A¨vwgb) dil.HCl dil.H2O2 CONH2 (A¨vgvBW) Rule-02: NO2 (bvB‡Uªv) Sn + HCl Zn + HCl Fe + HCl NH2 (A¨vwgb) Item- 04t A¨vwg‡bi e¨envi ev ¸iæZ¡ tÑ Dw™¢` I cÖvYx †_‡K cÖvß A‡bK A¨vwgb Ilya I cywóKviK wn‡m‡e e¨eüZ n‡q _v‡K| cÖK…wZ‡Z A¨vwgb A¨vgvB‡bv GwmW I †cÖvwUb wn‡m‡e we`¨gvb| A¨vwgb DNA I RNA Gi wbDwK¬IUvBW mg~‡ni welg-PvwµK ÿviK wn‡m‡e we`¨gvb| K…wÎg Zš‧ †hgb- bvBjb- 6:6 •Zwi‡Z †n·vwgw_wjb WvBA¨vwgb e¨eüZ nq| B_vBj A¨vwgb I WvB B_vBj A¨vwgb Pvgov wk‡í †jvgbvkK iƒ‡c e¨eüZ nq| wg_vBj A¨vwgb wngvqK iƒ‡c I Pvgov wk‡í †jvgbvkK iƒ‡c e¨eüZ nq| mvj‡dvwbjvgvBW GKwU ÿZ wbeviK I RxevYybvkK, A¨v‡¤úUvwgb GKwU ejKviK, †ebwWªj (3° A¨vwgb) Ny‡gi Jla I GjvwR© wb‡ivaK Jla wn‡m‡e e¨eüZ nq| Rxe‡Kv‡li wbDwK¬I‡cÖvwUb MVbKvix DNA A¨vwgb RvZK w`‡q MwVZ| Wvqv‡Rvwbqvg je‡Yi ¸iæZ¡: Gi eûgyLx ¸iæZ¡ i‡q‡Q- wewfbœ cÖKvi A¨v‡Rv-iÄK cÖ¯‧Z Kiv nq| wewfbœ mg‡MvÎxq †kÖwYi A¨v‡iv‡gwUK †h․M ms‡kølY Kiv nq| †h me A¨v‡iv‡gwUK †h․M †ebwRb †_‡K cÖ¯‧Z Kiv hvq bv Zv‡`i GB jeY †_‡K •Zix Kiv hvq| -t Z_¨ KwYKv (HOT NEWS) t- weï× A¨vwbwjb eY©nxb wKš‧ evZv‡m Ly‡j ivL‡j GwU ev`vgx e‡Y©i Zijiƒ‡c †`Lv hvq| A¨vwj‡dwUK cÖvBgvix A¨vwgb Wvqv‡Rvwbqvg jeY •Zwi K‡i bv| A¨vwbwjb‡K Wvqv‡Rvwbqvg je‡Y cwiYZ Ki‡Z wb¤œZvcgvÎv (0-5C) cÖ‡qvRb, D”P ZvcgvÎvq (10C Gi †ewk) GwU †db‡j cwiYZ nq| 1898 mv‡j GRIESS Wvqv‡Rvwbqvg jeY cÖ_g •Zwi K‡ib| A¨vwj‡dwUK A¨vwgbmg~n gv‡Qi Avuk‡U MÜhy³ Ges A¨v‡iv‡gwUK A¨vwgbmg~n †ek ÿwZKi| Short Ans Question SAQWRITTEN SUGGESTION BAQ Broad Ans Question cÖkœ-01: H3CCONH2 + KOH + Br2 – ; [BUTex. 2003-04] DËi: H3CCONH2 + KOH + Br2 – CH3NH2 + 2KBr + K2CO3 + 2H2O ; cÖkœ-02: A I B †h․M `ywU‡K kbv³ K‡i wb‡¤œi wewµqv m¤ú~Y© Ki: [RU. 2019-20] CONH2 Br2 + NaOH ––––––––– A HNO2 + HCl –––––––––– 0-5C B + H2O DËi: CONH2 Br2 + NaOH NH2 HNO2 + HCl 0-5C N2Cl + H2O (†ebwRb Wvqv‡Rvwbqvg †K¬vivBW) ––––––––– Br2 + NaOH cÖkœ-03: CH3CNCH3 + H2O + O || H | H + [BUET. 2019-20] DËi: CH3COOH (B_v‡bvwqK GwmW), CH3NH2 (wg_vBj A¨vwgb) cÖkœ-04: wKfv‡e cvIqv hvq, mgxKiYmn wjL? Av‡qv‡Wvwg‡_b †_‡K A¨vwg‡bv wg‡_b- [RUET. 2019-20] DËi: CH3I +2 NH3 CH3NH2 + NH4I cÖkœ-05: ivmvqwbK wewµqvwU m¤ú~Y© Ki: C6H5N(CH3)2 + NaNO2 + HCl 0-5C ––– ? [KUET. 2019-20] DËi: C6H5N(CH3)2 + NaNO2 + HCl 0-5C ––––C6H5 – (CH3)2NH + .N O2 – + H2O

CHEMISTRY PLUS •Re imvqb 621 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES NH2 O C2H5 +Reagent NH CO CH3 O C2H5 NH2 O-C2H5 +CH3COCl NH-CO-CH3 O-C2H5 +HCl cÖkœ-06: µvBmqwWb wK? Gi e¨envi wjL| [BUTex. 2007-08] DËi: µvBmqwWb- µvBmqwWb GK cÖKv‡ii iÄK| Gi KvR Kvc‡oi mgMÖ Aeqe iwÄZ Kiv| cÖkœ-07: A¨vwbwjb ÿviag©x A_ev wg_vBj A¨vwgb A¨vwbwj‡bi †P‡q †ewk ÿviag©x †Kb? [P.‡ev.; w`.‡ev. 2019; e.‡ev. 2016; Kz.‡ev. 2019; wm.‡ev. 2019] DËi: wb‡R †Póv K‡iv| REAL TEST ANALYSIS OF PREVIOUS YEAR QUESTIONS STEP 01 ANALYSIS OF GENERAL UNIVERSITY QUESTION DU 01. 0°C ZvcgvÎvq A¨vwbwjb Ges NaNO2 I HCl Gi wewµqvi Drcv`‡K Kÿ ZvcgvÎvq ‡i‡L w`‡j wK cvIqv hvq? [DU-Ka. 2015-16] A. Benzene diazonium chloride B. Chlorobenzene C. Nitrobenzene D. Phenol mwVK DËi: D. Phenol e¨vL¨v: 0-5C ZvcgvÎvq A¨vwbwjb Ges (NaNO2+HCl) wewµqv K‡i †ebwRb Wvqv‡Rvwbqvg jeY Drcbœ K‡i| c‡i Zv Kÿ ZvcgvÎvq Avb‡j cvwbi mv‡_ wewµqv K‡i ‡dbj Drcbœ K‡i| G wewµqvwU n‡”Q0-5C + NaNO2 + HCl NH2 N2Cl H2O 25C OH + N2 + HCl 02. †ebwRb Wvqv‡Rvwbqvg †K¬vivB‡Wi Rjxq `ªeY‡K Zvc †`qv n‡j wK N‡U? [DU.2013-2014] A. Formation of phenol B. Formation of nitrobenzene C. Formation of diphenyl D. Formation of phenyl hydrazine mwVK DËi: A. Formation of phenol e¨vL¨v: †ebwRbWvqv‡Rvwbqvg †K¬vivBW‡K Av`ª© we‡kølY Ki‡j ev Rjxq `ªe‡Y Zvc w`‡j †dbj •Zwi nq| N2Cl + H2O OH + N2 + HCl 03. RCN ‡h․MwU‡K RCH2NH2 ‡h․‡M cwiYZ Ki‡Z †h weKviK e¨eüZ nq Zv n‡”Q- [DU.2010-2011; MAT.2002-03) A. KMnO4 B. CH3COCl C. CH2ClCOOH D. LiAlH4 mwVK DËi: D. LiAlH4 e¨vL¨v: A¨vjKvBj mvqvbvBW ev bvBUªvBj‡K weRvwiZ Ki‡j 1 0 A¨vwgb Ges AvB‡mvmvqvbvBW‡K weRvwiZ Ki‡j 2 0 A¨vwgb Drcbœ nq| weRviK wn‡m‡e e¨eüZ nqi) H2/Ni, ii) NaBH4 iii) LiAlH4 iv) Na + alcohol ‡hgb-(i) A¨vjKvBj mvqvbvBW + weRviK → 1 0 A¨vwgb R – CN + [H] → R – CH2 – NH2 (ii) A¨vjKvBj AvB‡mv mvqvbvBW+weRviK→20 A¨vwgb R – NC + [H] → R – NH – CH3 04. wb‡Pi †Kvb †h․MwU Wvqv‡Rvwbqvg jeY Drcbœ K‡i? [DU.10-11, 04-05; CU-09-10; BUTex. 15-16] A. H2NCH2CH3 B. C6H5NO2 C. C6H5CONH2 D. C6H5NH2 mwVK DËi: D. C6H5NH2 e¨vL¨v: C6H5NH2+HCl+NaNO2 05C C6H5N2Cl+NaCl+H2O 05. wb‡¤œi wewµqvi g~j Drcv` wK? [DU. 2006-07] NH2 + CH3COCl Anhydrous condition A. NHCOCH3 B. NH2 H3COC C. NH2 COCH3 D. NH2 COCH3 mwVK DËi: A. e¨vL¨v: A¨vwbwjb‡K A¨vwmUvBjKiY Ki‡j •Zix nq A¨vwmU¨vwbjvBW| NH2 CH3COCl NHCOCH3 + CH3COOH A¨vwbwjb A¨vwmU¨vwbjvBW 06. wbgœwjwLZ wewµqvi Rb¨ †Kvb weKviK cÖ‡qvRb? [DU.2005-06] A. CH3–CH – CH3 B. CH3 – COCl C. CH3CONH2 D. CH3COOH mwVK DËi: B. CH3 – COCl e¨vL¨v: 07. wb‡Pi †Kvb †h․MwU Wvqv‡Rvwbqvg jeY Drcbœ K‡i? [DU. 2004-05] A. H2NC2H5 B. C6H5NO2 C. C6H5NH2 D. (CH3)3N mwVK DËi: C. C6H5NH2 e¨vL¨v: cÖvBgvix A¨v‡iv‡gwUK A¨vwgb‡K †hgb A¨vwbwjb‡K 0-5C wb¤œ ZvcgvÎvq nvB‡Wªv‡K¬v‡iv Gwm‡W `ªexf~Z K‡i, H `ªe‡Y †mvwWqvg bvBUªvBW †hvM Ki‡j •Zix nq †ebwRb Wvqv‡Rvwbqvg †K¬vivBW| GB wewµqv‡K Wvqv‡Rv wewµqv e‡j| 08. C6H5OH + NH3 ZnCl 2 ? wewµqvq wK Drcbœ nq? [DU.2003-2004; DU.2005-06] A. †eb‡RvwqK GwmW B. bvB‡Uªv‡ebwRb C. A¨vwbwjb D. wcKwiK GwmW mwVK DËi: C. A¨vwbwjb e¨vL¨v: ZnCl2 Gi Dcw¯
wZ‡Z †dbj I A¨v‡gvwbqv‡K GK‡Î DËß Ki‡j A¨vwbwjb Drcbœ nq| C6H5OH + NH3 ZnCl 2 C6H5NH2 + H2O 09. 5 0C ZvcgvÎvq A¨vwbwj‡bi mv‡_ HNO2 Ges HCl Gi wewµqvq Drcbœ nq- [DU.2001-2002, RU. 2007-08] A.Wvqv‡Rv †h․M B. bvB‡Uªv †h․M C. †ebwRb D. Dc‡ii meKqwU mwVK DËi: A.Wvqv‡Rv †h․M e¨vL¨v: 0-5°C ZvcgvÎvq A¨vwbwj‡bi mv‡_ HNO2 GwmW Ges HCl Gi wewµqvq Drcbœ nq diazo compound GwU GKwU Wvqv‡Rv wewµqvAr – NH2 + HNO2 NaNO2.HCl ––––––––– ArN2Cl (diazo compound) JU 01. 1, 2, 3- A¨vwgb Gi g‡a¨ cv_©K¨ wbY©‡q e¨eüZ nq †KvbwU? [JU-A, Set-D. 2019-20, D,Set-C: 2018-19; CU. 2016-17; RU. 2009-10; MBSTU-B. 2019-20; DU.7Clg:2019-20; JUST. 2016-17] A. HNO3 B. Zn. HCl C. HNO2 D. CHCl3 mwVK DËi: C. HNO2

622 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES e¨vL¨v: 1, 2, 3 A¨vwg‡bi cv_©K¨ Kiv nq HNO2 Øviv| CH3NH2 + NHO2 NaNO2 HCl –––––––––– CH3OH + N2 + H2O (CH3)2NH + HNO2 NaNO2 HCl –––––––––– (CH3)2NNO + H2O (CH3)3N + HNO2 NaNO2 HCl –––––––––– [(CH3)3N +H]NO2 02. PhNH2 + HNO3 H2SO4 ––––– wewµqvq Drcv‡`i KZ b¤^i Kve©‡b NO2 hy³ n‡e? [JU-A2.2017-18; HSTU.2016-17] A. 2 B. 3 C. 4 D. 6 mwVK DËi: B. 3 e¨vL¨v: H2SO4 Gi Dcw¯
wZ‡Z A¨vwbwj‡bi wfZi Mvp HNO3 Pvjbv Ki‡j Drcbœ n‡e 3-bvB‡Uªv A¨vwbwjb| A¨vwbwj‡bi bvB‡Uªk‡bi mgq ga¨eZ©x av‡c A¨vwbwjwbqvg Avqb (C6H5NH3 + ) •Zix nq, hv †gUv wb‡`©kK| ZvB A¨vwbj‡bi bvB‡Uªk‡bi mgq 3-bvB‡Uªv ev †gUv bvB‡Uªv A¨vwbwjb •Zix nq| 03. wb‡Pi †Kvb †h․MwU AwaK ÿviKxq? [JU-D,Set-C: 2018-19, RU. 2011-12] A.A¨v‡gvwbqv B. wg_vBj A¨vwgb C. wdbvBj A¨vwgb D. WvBwg_vBj A¨vwgb mwVK DËi: D. WvBwg_vBj A¨vwgb 04. Wvqv‡Rv wewµqv †kl n‡q‡Q wKbv wbwðZ Ki‡Z ÷vP© Av‡qvWvBW wgkÖ‡Y KvMR w`‡j Zv bxj eY© aviY K‡i †Kb? [JU-D7.2017-18] A. Wvqv‡Rvwbqvg jeY Av‡qvWvBW KvMR‡K bxj K‡i B. RviYag©x AwZwi³ HNO2 Av‡qvwWb gy³ nq C. NaNO2 Øviv KI weRvwiZ nq D. HCl GwmW KI †_‡K I2 Drcbœ K‡i mwVK DËi: B RviYag©x AwZwi³ HNO2 Av‡qvwWb gy³ nq e¨vL¨v: Wvqv‡RvWvB‡Rkb mgvß n‡j NaNO2 n‡Z gy³ HNO2 GwmW ÷vP© KvMR‡K bxj e‡Y© cwiYZ K‡i| 05. A¨vwg‡bi †ÿ‡Î †Kvb Z_¨wU mwVK bq? [JU-D3.2017-18] A. ‡cÖvUb Z¨vM K‡i B. ‡cvjvi †h․M C. cvwb‡Z `ªeYxq D. cvwbi mv‡_ nvB‡Wªv‡Rb eÜb MVb K‡i mwVK DËi: A. ‡cÖvUb Z¨vM K‡i e¨vL¨v: A¨vwg‡bi bvB‡Uªv‡Rb I nvB‡Wªv‡Rb cigvYyi Zwor FYvZ¥KZvi cv_©K¨ _vKvq GwU †cvjvi †h․M Ges A¨vwgb mg~n wb‡Ri g‡a¨ I cvwbi AYyi m‡½ nvB‡Wªv‡Rb eÜb MVb Ki‡Z cv‡i e‡j me A¨vwgb cvwb‡Z `ªeYxq Ges bvB‡Uªv‡Rb cigvYy‡Z gy³ †Rvo B‡jKUªb _vKvq ‡cÖvUb MÖnY Ki‡Z cv‡i| 06. +NH3+Cu2O 200 C / 60atm ?+Cu2Cl2+H2O [JU-D3.2017-18] A. B. C. D. †KvbwUB bq mwVK DËi: A 07. A¨vwgbmg~‡ni mvaviY `ªveK †KvbwU? [JU-D5.2017-18, MAT. 2004-05] A. 5% HCl B. 5%Na2CO3 C. 5% NaOH D. 5% KOH mwVK DËi: A. 5% HCl e¨vL¨v: A¨vwgbmg~n ÿviagx©| ZvB Gwm‡Wi m‡½ wewµqv K‡i jeY MVb K‡i| 08. A¨v‡iv‡gwUK A¨vwg‡bi mv‡_ HNO2 Gi wewµqvq †KvbwU cvIqv hvq? [JU-6. 2017-18, 2011-12, RU. 2007-08, MBSTU. 2010-11] A. bvB‡Uªv‡ebwRb B. †dbj C. Wvqv‡Rvwbqvg jeY D. †ebwRb mwVK DËi: B. †dbj e¨vL¨v: + HNO2 25C 09. ‡KvbwU AwaK ÿvi agx©- [JU-A1.2017-18, 2016-17; CU. 2017-18; BSMRSTU. 2019-20, 2017-18; PUST.2017-18; RU.2016-17; RU.F3-2017-18; SUST.2008- 2009; JU.2009-10] A. C6H5-NH2 B. R-NH2 C. R2-NH D. R3N mwVK DËi: C. R2-NH e¨vL¨v: A¨vwgb mg~‡ni ÿviag©xZvi µg nj: 2° > 1°> 3°> NH3> Ar - NH2 10. ‡Kvb weKviK Øviv cÖvBgvix A¨vwgb kbv³ Kiv hvq? [JU-A. 2016-17] A. HCl B. CHCl3 C. NaOH D. CHCl3+KOH mwVK DËi: D. CHCl3+KOH e¨vL¨v: †K¬v‡ivdig I 1 A¨vwgb kbv³Ki‡Yi wewµqvi bvg Kvwe©j A¨vwgb wewµqv| GB wewµqvq CHCl3 I KOH(alc.) e¨envi Kiv nq| 11 . †KvbwU cÖvBgvix A¨vwgb? [JU-D: 2014-15] A. (CH3)2NH B. (CH3)3N C. CH3NH2 D. NH3 mwVK DËi: C. CH3NH2 e¨vL¨v: 1. CH3NH2 1Amine, 2. (CH3)2NH2Amine 3. (CH3)3N 3Amine 4. NH3 Ammonia Compound 12. A¨vwj‡dwUK I A¨v‡iv‡gwUK Dfq ai‡bi †m‡KÛvix A¨vwgb †KvbwUi mv‡_ wewµqv K‡i bvB‡Uªv‡mv A¨vwgb Drcbœ K‡i? [JU-D. 2013-14] A. HNO2 B. HNO3 C. NaNO2 D. HCl mwVK DËi: A. HNO2 e¨vL¨v: A¨vwj‡dwUK I A¨v‡iv‡gwUK Dfq ai‡bi †m‡KÛvwi A¨vwgb bvBUªvm GwmW Gi mv‡_ (HNO2) wewµqv K‡i bvB‡Uªv‡bv A¨vwgb Drcbœ K‡i| 13. †ebwRb Wvqv‡Rvwbqvg †K¬vivB‡Wi wewfbœ weKviKmn weRvi‡Y Kx Drcbœ nq? [JU-D. 2013-14] A. wdbvBj A¨vwgb B. wdbvBj nvBWªvwRb C. †ebRvBj A¨vwgb D. A I B DfqB mwVK DËi: D. A I B DfqB e¨vL¨v: †ebwRb Wvqv‡Rvwbqvg †K¬vivBW‡K wUb (II) †K¬vivBW I nvB‡Wªv‡Rb †K¬vivB‡Wi wgkÖYmn weRvwiZ Ki‡j •Zix nq wdbvBj nvBWªvwRb Ges LiAlH4 mn weRvwiZ Ki‡j •Zix nq A¨vwbwjb| 14. wUb I Mvp HCl wgkÖY Øviv bvB‡Uªv‡ebwRb‡K weRvwiZ Ki‡j GKwU †h․M A Drcbœ nq| Drcbœ A †h․M‡K 0-5C ZvcgvÎvq HCl ev H2SO4 G `ªexf‚Z K‡i H `ªe‡Y †mvwWqvg bvBUªvBU `ªeY †hvM Ki‡j GKwU jeY B Drcbœ nq| B †h․MwUi bvg wK? [JU.2012-2013] A. A¨vwbwjb B. †ebwRb Wvqv‡Rvwbqvg †K¬vivBW C. B_vBj †eb‡Rv‡qU D. m¨vwjmvBwjK GwmW mwVK DËi: B. †ebwRb Wvqv‡Rvwbqvg †K¬vivBW e¨vL¨v: C6H5NO2 + bvB‡Uª‡ebwRb [H] Sn + HCl –––––––– C6H5NH2 + A¨vwbwjb (A-†h․M) NaNO2 HCl 0-5C –––––––– C6H5N NCl †ebwRb Wvqv‡Rvwbqvg †K¬vivBW (B-†h․M) 15. †ebwRb Wvqv‡Rvwbqvg je‡Yi mv‡_ nvB‡cvdmdivm GwmW‡K CuCl Gi Dcw¯
wZ‡Z wewµqv Kiv‡j A ‡h․M •Zwi nq| mvaviY ZvcgvÎvq †jvnvi Dcw¯
wZ‡Z A ‡h․M‡K Cl2 Gi mv‡_ wewµqv Kiv‡j B ‡h․M •Zwi nq| B ‡h․M‡K 150-200 evqyPv‡c I 300-400C ZvcgvÎvq ÿvixq Av`ª©we‡kølY I c‡i A‡¤øi mv‡_ wewµqv Kiv‡j C †h․M •Zwi nq| C ‡h․‡Mi mv‡_ Mvp HNO3 ‡hvM Ki‡j D ‡h․M •Zwi nq| [JU.2011-2012] (i) A †h․MwUi bvg wK? A. †ebwRb B. †dbj C. UjyBb D. †K¬v‡iv‡ebwRb NH2 Cl NH2 Cl NH2 Cl NH2 OH

CHEMISTRY PLUS •Re imvqb 623 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES jNy mwVK DËi: A. †ebwRb (ii) B †h․MwUi bvg wK? A. †dbj B. †K¬v‡iv‡ebwRb C. M¨vgvw·b D. A¨vwb‡mvj mwVK DËi: B. †K¬v‡iv‡ebwRb (iii) C †h․MwUi bvg wK? A. mvB‡K¬v‡n·vbj B. †dbj C. †K¬v‡iv‡ebwRb D. UjyBb mwVK DËi: B. †dbj (iv) D ‡h․MwUi bvg wK? A. A¨vwbwjb B. wU.Gb.wU C. wcKwiK GwmW D. †ebwRb mwVK DËi: C. wcKwiK GwmW e¨vL¨v: + H3PO2 CuCl2 [A] Fe Cl2 [B] KOH H2O [C] HNO3 [D] 16. C6H5–CH2C(CH3)H–NH2 Gi bvg wK? [JU.2011-2012] A. 3- wg_vBj‡ebRvgvBW B. mvjdvwbjvgvBW C. A¨vw¤úU¨vwgb D. †KvbwUB bq mwVK DËi: C. A¨vw¤úU¨vwgb 17. 1 0 , 20 Ges 3 0 A¨vwgb mg~‡ni cv_©K¨ wbgœwjwLZ †Kvb wewµqvi gva¨‡g? [JU. 10-11, BSMRSTU. 13-14; CU-F1. 16-17; JUST. 16-17, RU. 09-10] A. A¨vwgb+ HNO2 B. A¨vwgb+HNO3 C. A¨vwgb+H2SO4 D. A¨vwgb+HClO4 mwVK DËi: A. A¨vwgb+ HNO2 e¨vL¨v: 1°, 2° I 3° A¨vwgb kbv³Ki‡Y bvBUªvm GwmW e¨eüZ nq| wewµqv¸‡jv wb¤œiƒcCH3-NH2+HO-NO NaNO HCl 2 CH3-OH+N2+H2O 1° A¨vwgb bvB‡Uªv‡Rb M¨vm wbM©Z nq| (CH3)2-NH+HO-NO NaNO HCl 2 (CH3)2N-NO+H2O 2° A¨vwgb njy` e‡Y©i bvB‡Uªv‡mv A¨vwgb •Zwi nq| (CH3)3N+HNO2 NaNO HCl 2 [(CH3)3NH]NO2 3° A¨vwgb UªvBwg_vBj A¨v‡gvwbqvg bvBUªvBU jeY •Zwi nq| 18. Wv‡qv‡Rvwbqvg Avqb (C6H5N2 + ) †Kvb ai‡Yi weKviK wn‡m‡e KvR K‡i? [JU.2009-10] A. B‡jKUªbvKl©x B. gy³ i¨vwWK¨vj C. †K›`ªvKl©x D. †KvbwU wn‡m‡e bq mwVK DËi: A. B‡jKUªbvKl©x e¨vL¨v: Dc‡ii abvZ¥K Avavb †`‡L GUv ¯úó eySv hvq †h, Dc‡ii AvqbwU B‡jKUªbvKl©x weKviK wnmv‡e KvR K‡i| 19. A¨vgvBW †h․Mmg~n ÿv‡ii (NaOH) m‡½ wewµqv K‡i wbgœwjwLZ †h․M Drcbœ K‡it [JU.2009-10] A. A¨vjwWnvBW B. GwmW C. A¨vjKvBj mvqvbvBW D. wK‡Uvb mwVK DËi: B. GwmW e¨vL¨v: A¨vgvBW‡K cvwbmn dzUšÍ ZvcgvÎvq DËß Ki‡j Zv Av`ª© we‡køwlZ nq ‣Re GwmW Drcbœ K‡i| LwbR GwmW †hgb, HCl-Gi Dcw¯
wZ‡Z A¨vgvB‡Wi Av`©ª we‡kølY `ªæZ nq| ÿvi `ªe‡Y A¨vgvB‡Wi Av`ª© we‡kølY wewµqv `ªæZZi N‡U Ges avZe jeY Drcbœ nq| †hgb: R-CO-NH2+H2O ,HCl RCOOH R-CO-NH2+NaOH R-COONa+NH3 20. CH3NH2 HNO2.H+ .0–5C –––––––––––– Gi †ÿ‡Î wb‡gœi †KvbwU N‡U? [JU.2009-10] A. CH3N2 + Drcbœ nq bv B. Drcbœ nq I ¯
vqx nq C. Drcbœ nq Z‡e ¯
vqx nq bv D. Dc‡ii meB mwVK mwVK DËi: C. Drcbœ nq Z‡e ¯
vqx nq bv e¨vL¨v: mvaviYZ A¨v‡iv‡gwUK cÖvBgvwi A¨vwgb Wvqv‡Rvwbqvg jeY MVb K‡i| Z‡e A¨vwj‡dwUK cÖvBgvix A¨vwgbI Abyiƒc Wvqv‡Rvwbqvg jeY MVb K‡i, wKš‧ Zv Aw¯
wZkxj e‡j we‡qvwRZ n‡q bvB‡Uªv‡Rb, A¨vj‡Kvnj I Ab¨vb¨ †h․‡M cwiYZ nq| RU 01. A¨vwbwjb‡K mivmwi bvB‡Uªv‡ebwR‡b iƒcvšÍwiZ Kivi DËg weKviK †KvbwU? [RU-C.2016-17] A. H2O2 B. C6H5CO3H C. FeSO4 + CH3CO2H D. KMnO4 (ÿvixq) mwVK DËi: A. H2O2 e¨vL¨v: wewµqvwU- + 3H2O2 + 4H2O NH2 NO2 Avwbwjb bvB‡Uªv‡ebwRb 02. Na/C2H5OH Gi Dcw¯
wZ‡Z A¨vjKvBj AvB‡mvmvqvbvBW †Kvb ai‡bi †h․M Drcbœ Ki‡e? [RU-H. 2015-16] A. 1° A¨vwgb B. 2° A¨vwgb C. 3° A¨vwgb D. ‡KvbwUB bq mwVK DËi: B. 2° A¨vwgb e¨vL¨v: Na + C2H5OH C2H5ONa + [H] R – NC + 4[H] R – NH – CH3 [20 A¨vwgb] 03. wb‡Pi †Kvb mvjdv WªvM wbD‡gvwbqv †iv‡Mi RxevYybvkK wnmv‡e e¨eüZ nq [RU.2012-2013] A. mvjdv¸qvwbwWb B. mvjdv_v‡qv‡Rvj C. mvjdvWvqvwRb D. mvjdvwcwiwWb mwVK DËi: D. mvjdvwcwiwWb 04. UªvBwg_vBj A¨vwg‡bi Kb Gi gvb KZ? [RU.2012-2013] A. 6.010–4 B. 0.610–4 C. 1.810–4 D. 1.310–4 mwVK DËi: B. 0.610–4 05. C6H5N2Cl †K dzUšÍ jNy H2SO4 Øviv Av`ª© we‡kølY Ki‡j Drcbœ nqt [RU.09-10] A. C6H5OH B. C6H5COOH C. C6H5:H3 D. C6H3HO mwVK DËi: A. C6H5OH e¨vL¨v: C6H5N2Cl + H2O H2SO4 C6H5OH + N2+HCl 06. Wvqv‡RvK…Z mvj‡dvwbwjK GwmW I weUv-b¨vd_j ÿviKxq gva¨‡g Kvcwjs NwU‡q G‡Rv-iÄK cÖ¯‧Z K‡i| iÄK c`v_©wUi bvg wK? [RU.2009-2010] A. A‡iÄ-Uz B. evUvi B‡q‡jv C. Gwbwjb B‡q‡jv D. µvBmqwWb mwVK DËi: A. A‡iÄ-Uz e¨vL¨v: ÔA‡iÄ-UzÕ GKwU eûj e¨eüZ A¨v‡Rv iÄK| Wvqv‡RvK„Z mvjdvwbwjK GwmW I weUv b¨vd_j Gi ÿvixq gva¨‡g Kvcwjs NwU‡q A‡iÄ-Uz iÄK cÖ¯ÍyZ Kiv nq| e¨envit A‡iÄ-Uz GKwU DËg iÄK| Dj, wmj&K, bvBjb, †j`vi I KvMR wk‡í A‡iÄ-Uz iÄK iƒ‡c e¨eüZ nq| 07. DËß Ae¯
vq wdbvBj A¨vwgb bvBUªvm Gwm‡Wi mv‡_ wewµqv K‡i Drcbœ K‡i- [RU.2007-2008] A. bvB‡Uªv‡mv wdbvBj B. ‡dbj C. bvB‡Uªv †ebwRb D. UjyBb mwVK DËi: B. ‡dbj e¨vL¨v: DËß Ae¯
vq wdbvBj A¨vwgb bvBUªvm Gwm‡Wi mv‡_ wewµqv K‡i †dbj, N2 M¨vm I cvwb Drcbœ K‡i| wewµqvt C6H5–NH2+HNO2 30–35C –––––– C6H5–OH+N2+H2O N2Cl Cl OH OH O2N NO2 NO2

624 •Re imvqb CHEMISTRY PLUS ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES CU 01. ‡Kvb †h․MwU †ewk ÿviag©x? [CU-A.2017-18; BSMRSTU.17-18, JU. 16-17] A. A¨v‡gvwbqv B. cÖvBgvwi A¨vwgb C. †m‡KÛvwi A¨vwgb D. A¨vwbwjb mwVK DËi: C. †m‡KÛvwi A¨vwgb e¨vL¨v: A¨vwgb mg~‡ni ÿviag©xZvi µg:2° > 1° > 3° > NH3ArNH2 02. ‡KvbwU Uviwmqvix A¨vwg‡bi D`vniY? [CU-F. 2015-16] A. N, N-WvB wg_vBj A¨vwgb B. N-wg_vBj A¨vwbwjb C. 2-A¨vwg‡bv ‡cÖv‡cb D. ‡UUªv wg_vBj A¨v‡gvwbqvg ‡K¬vivBW E. A¨vwg‡bv ‡ebwRb mwVK DËi: †bB, mwVK DËiwU n‡jv UªvBwg_vBjA¨vwgb ev – | N – GB g~jK wewkó A¨vwgb ev 3 0 A¨vwgb e¨vL¨v: (a) N,N–WvB wg_vBj A¨vwgbH3C–HN–CH32 0 A¨vwgb (b) wg_vBj A¨vwbwjb 2 0 A¨vwgb (c) 2-A¨vwg‡bv †cÖv‡cb 1 0 A¨vwgb (d) †UUªv wg_vBj A¨v‡gvwbqvg †K¬vivBW 4 0 ev †KvqviUvibvix A¨vwgb 03. Amines Gi AvPiY -Gi gZ- [CU.2011-2012] A. Lewis acid B. Lewis base C. Aprotic acid D. Neutral compound E. Acid compound mwVK DËi: B. Lewis base e¨vL¨v: (:NH2–) A¨vwg‡bi A¨vwg‡bv g~j‡K gy³†Rvo B‡jKUªb_v‡K ZvB GwU jyBm ÿviK| 04. A¨vwbwjb ‡_‡K Wvqv‡Rvwbqvg jeY cÖ¯‧wZ‡Z †Kvb weKviK e¨eüZ nq? [CU.2012-2013,2010-2011 ; KU.2003-04] A. KNO3 B. NaNO3 C. NaNO2+HCl D. NaCl+H2SO4 E. †dbj mwVK DËi: C. NaNO2 + HCl 05. CH3NH2 + HNO2 (`ªeY) wewµqvwUi Drcv‡`i GKwU n‡e- [CU.10-11] A. CH3OH B. CH3NO2 C. CH3NO D. CHN2 mwVK DËi: A. CH3OH e¨vL¨v: wewµqvt CH3NH2 + HNO2 CH3OH+N2+H2O KU 01. bvB‡Uª‡ebwRb‡K wUb I Mvp nvB‡Wªv‡K¬vwiK GwmW Øviv weRviY K‡i hv Drcbœ nq Zvi AvYweK IRb n‡”Q- [KU-x, 2013-14] A. 90 B. 93 C. 123 D. †KvbwUB bq mwVK DËi: B. 93 e¨vL¨v: bvB‡Uª‡ebwRb‡K wUb I Mvp nvB‡Wªv‡K¬vwiK GwmW Øviv weRviY Ki‡j Drcbœ nq A¨vwbwjb| hvi AvYweK fi 93| C6H5NO2 + bvB‡Uª‡ebwRb [H] Sn + HCl –––––––– C6H5NH2 + A¨vwbwjb H2O 02. †ebwRb Wvqv‡Rvwbqvg jeY‡K Kcvi P~Y© Ges n¨v‡jv‡Rb G¨vwmWmn DËß Ki‡j Kx Drcbœ nq? [KU.2009-2010] A.bvB‡Uªv‡ebwRb B. mvqv‡bv‡ebwRb C. †K¬v‡iv‡ebwRb D. †dbj mwVK DËi: C. †K¬v‡iv‡ebwRb 03. CHCl3 I NaOH Gi A¨vj‡Kvnjxq `ªe‡Y A¨vwbwjb‡K DËß Ki‡j Drcbœ nq- [KU.2001-2002) A. ‡ebwRb Wv‡qv‡Rvwbqvg †K¬vivBW B. Kvwe©j A¨vwgb C. UªvB‡K¬v‡iv A¨vwbwjb D. ‡dbj mwVK DËi: B. Kvwe©j A¨vwgb e¨vL¨v: C6H5NH2 + CHCl3 + NaOH → C6H5NC (Kvwe©j A¨vwgb ev wdbvBj AvB‡mv‡mvqvbvBW)| Kvwe©j A¨vwg‡bi DrKU MÜ A¨vwbwjb kbv³ K‡i| 04. B_vbvgvBW wb‡Pi †Kvb weKvi‡Ki mv‡_ wewµqv K‡i wg_vBj A¨vwgb •Zwi K‡i? [KU.2001-2002; IU.2011-12] A. I2 + NaOH B. ZnCl2 + HCl C. Zn + NH4Cl D. Br2 + KOH mwVK DËi: D. Br2 + KOH e¨vL¨v: CH3CONH2+Br2+NaOH→CH3NH2 + NaBr + Na2CO3 + H2O IU 01. A¨vwbwjb + NaNO2 + HCl kxZj Ae¯
vq †`qÑ [IU-D.2019-20] A. C6H5N2Cl B. C6H5NO2 C. C6H5CH3 D. †Kv‡bvwUB bq mwVK DËi: A. C6H5N2Cl 02. ‡hwU ZxeªZi ÿviK- [IU. 2014-15, JU. 2016-17] A. A¨v‡gvwbqv B. wg_vBj A¨vwgb C. WvBwg_vBj A¨vwgb D. UªvBwg_vBj A¨vwgb mwVK DËi: C. WvBwg_vBj A¨vwgb 03. mœvqyweK D‡ËRbvq mœvqy †_‡K wbtm„Z G‡Wªbvwjb A¨vwgb- [IU.2003-04] A. cÖvBgvix A¨vwgb B. ‡m‡KÛvix A¨vwgb C. Uviwmqvix A¨vwgb D. ‡KvbwUB bq| mwVK DËi: B. ‡m‡KÛvix A¨vwgb DU-7Clg 01. C6H5NO2-†K Sn Ges Nb HCl Øviv DËß Kiv n‡j Kx Drcv` •Zwi n‡e? [7clg,Unit-A:2018-19] A. 2, 4-WvBbvB‡Uªv‡ebwRb B. †K¬v‡iv‡ebwRb C. UjyBb D. A¨vwbwjb e¨vL¨v: C6H5NO2-†K Sn Ges Nb HCl Øviv DËß Ki‡j A¨vwbwjb cvIqv hvq| 02. †Kvb †h․MwUi m‡½ NaNO2 I HCl †hvM K‡i Wvqv‡Rvwbqvg jeY cÖ¯‧Z Kiv hvq? [7clg,Unit-A:2018-19] A. CH3CH2OH B. C6H5OH C. CH3NO2 D. C6H5NH2 e¨vL¨v: Wvqv‡RvKiYt cÖvBgvix A¨v‡iv‡gwUK A¨vwgb †hgb- A¨vwbwjb Gi mv‡_ 0 o - 5 oC ZvcgvÎvq †mvwWqvg bvBUªvBU (NaNO2) jeY I Mvp HCl †_‡K Drcbœ bvBUªvm GwmW Gi wewµqvq †ebwRb Wvqv‡Rvwbqvg †K¬vivBW jeb Drcbœ nq| STEP 02 ANALYSIS OF SCIENCE & TECHNOLOGY QUESTION SUST 01. †KvbwU mwVK Av‡cw¶K ¶vixqZvi µg? [SUST-B. 2019-20] A. C6H5NH2 > (CH3)2NH > CH3NH2 > NH3 B. C6H5NH2 > NH3 > CH3NH2 > (CH3)2 NH C. (CH3)2NH > CH3NH2 > NH3 > C6H5NH2 D. CH3NH2 > (CH3)2NH > C6H5NH2 > NH3 E. (CH3)2NH > CH3NH2 > C6H5NH2 > NH3 mwVK DËi: C. (CH3)2NH > CH3NH2 > NH3 > C6H5NH2 e¨vL¨v: A¨vwg‡bi ÿviag©xZv µg n‡jv- 2 > 1 > 3 > NH3 > C6H5NH2 02. 5C ZvcgvÎvq 30% HCl I A¨vwbwjb wgkÖ‡Y ax‡i ax‡i NaNO2 †hvM Kiv nj| D³ `ªe‡Y Kl †hvM K‡i 100C ZvcgvÎvq DËß Ki‡j wb‡”i †Kvb †h․M Drcbœ nq? [SUST.2011-2012] A. Av‡qv‡Wv †ebwRb B. 2,4-WvB Av‡qv‡Wv A¨vwbwjb C. 4-Av‡qv‡Wv A¨vwbwjb D. Wv‡qv‡Rvwbqvg jeY E. bvB‡Uªv †ebwRb mwVK DËi: A. Av‡qv‡Wv †ebwRb e¨vL¨v: (i) C6H5-NH2 + NaNO2 +2HCl C 0 0 5 C6H5N2Cl (ii) C6H5N2Cl + KI C 0 0 5 C6H5I +KCl+N2 + HCl NO2 Sn NH2 + NaNO2+HCl NH2 + 2H2O N2Cl 0 o -5 oC

CHEMISTRY PLUS •Re imvqb 625 ASPECT SERIES cvV¨eB‡K mnR Kivi cÖqvm ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES ASPECT SERIES 03. A¨vwbwjb mvaviY ZvcgvÎvq †eªvwgb cvwbi m‡½ wewµqv Ki‡j †Kvb †h․M Drcbœ nq? [SUST.2010-2011] A. A‡_©v-‡eªv‡gv A¨vwbwjb B. ‡gUv-‡eªv‡gv‡ebwRb C. c¨viv-‡eªv‡gv‡ebwRb D. 2, 4, 6 UªvB‡eªv‡gvA¨vwbwjb mwVK DËi: D. 2, 4, 6 UªvB‡eªv‡gvA¨vwbwjb e¨vL¨v: A¨vwbwjb mvaviY ZvcgvÎvq Cl2 ev Br2 cvwbi mv‡_ (cÖfveK QvovB) wewµqv K‡i 2,4,6-UªvB‡K¬v‡iv ev 2,4,6-UªvB‡eªv‡gv A¨vwbwjb •Zwi K‡i| GwU A¨vwbwj‡bi n¨v‡jv‡R‡bkb wewµqv| ‡R‡b ivLv fvjt A¨vwbwj‡b Mvp HNO3 I H2SO4 Gi wgkªY †hvM K‡i 60- 700C DòZvq DËß Ki‡j †gUv-bvB‡Uªv A¨vwbwjb cvIqv hvq| GwU A¨vwbwj‡bi bvB‡Uªkb wewµqv| JUST 01. wb‡Pi †KvbwU Wvqv‡Rvwbqvg jeY MVb K‡i? [JUST-B: 2019-20] A. A¨vwjd¨vwUK 2˚ A¨vwgb B. A¨v‡iv‡gwUK 1˚ A¨vwgb C. A¨v‡iv‡gwUK 2˚ A¨vwgb D. A¨vwjd¨vwUK 1˚ A¨vwgb mwVK DËi: B. A¨v‡iv‡gwUK 1˚ A¨vwgb e¨vL¨v: ïaygvÎ A¨v‡iv‡gwUK 1˚ A¨vwgb Wvqv‡Rvwbqvg jeY MVb K‡i| MBSTU 01. Kvwe©j A¨vwgb MVb K‡i †Kvb †h․M? [MBSTU-A. 2019-20] A. A¨vwbwjb B. †dbj C. cÖvBgvix A¨vwgb D. †m‡KÛvix A¨vwgb mwVK DËi: C. cÖvBgvix A¨vwgb e¨vL¨v: CH3NH2 + CHCl3 + 3KOH CH3N C + 3KCl + 3H2O 02. †KvbwU AwaK ÿviKxq? [MBSTU-B. 2019-20] A. A¨v‡gvwbqv B. wg_vBj A¨vwgb C. wdbvBj A¨vwgb D. WvBwg_vBj A¨vwgb mwVK DËi: D. WvBwg_vBj A¨vwgb e¨vL¨v: ÿviag©xZvi µg = 2 > 1 > 3 > NH3 03. wb‡Pi †Kvb hyMjwU wmd ÿviK Drcbœ K‡i? [MBSTU-C. 2019-20] A. HCHO + NH3 B. CH3COCH3 + NH3 C. C6H5CHO + CH3NH2 D. CH3CHO + NH2OH mwVK DËi: C. C6H5CHO + CH3NH2 04. †KvbwU AwaK ÿviag©x? [MBSTU-C. 2019-20] A. CH3NH2 B. (CH3)3N C. (CH3)2NH D. C6H5NH2 mwVK DËi: C. (CH3)2NH e¨vL¨v: ZxeªZvi µg: HClO4 > HBrO4 > H2SO4 > HNO3 BSMRSTU 01. †Kvb †h․MwU‡Z N Gi B‡jKUªb NbZ¡ †ewk? [BSMRSTU-C. 2019-20] A. CH3NH2 B. (CH3)2NH C. (CH3)3N D. C6H5NH2 mwVK DËi: B. (CH3)2NH e¨vL¨v: N Gi e Nb‡Z¡i µg, R2NH > RNH2 > R3N > NH3 Zvn‡j, (CH3)2NH > CH3NH2 > (CH3)3N > NH3 02. bvBUªvm Gwm‡Wi mv‡_ wewµqvq †Kvb †h․MwU N2 M¨vm Drcbœ K‡i? [BSMRSTU-C.2017-18; NSTU:2019-20] A. C6H5NH2 B. (CH3)2NH C. (CH3)3N D. CH3NH2 mwVK DËi: D. CH3NH2 STEP 03 ANALYSIS OF ENGINEERING & BUTex QUESTION KUET 01. wb‡gœi †KvbwU me‡P‡q `~e©j ÿviK? [KUET-2016-17] A. NH2 B. NH2 NO2 C. CH3NH2 D.(CH3)2NH E.(CH3)3N mwVK DËi: B. e¨vL¨v: NH2 (pKb = 4.63) NH2 NO2 (pKb = 2.47) A¨v‡iv‡gwUK A¨vwgb A¨vwjwdwUK A¨vwg‡bi Zzjbvq A‡bK `~e©j ÿviK| KviY A¨v‡iv‡gwUK A¨vwg‡b Inductive Effect I Resonance Effect Gi Combination N‡U I bvB‡Uªv‡Rb Partially delocalised nq pi wm‡÷‡gi wfZi| 02. bvB‡UªvB‡_b‡K wUb I HCl mn‡hv‡M DËß Ki‡j wK Drcbœ n‡e? [KUET. 2014-15] A. C2H6 B. CH3 – CH2 – NH – CH3 C. CH3 – CH2 – NH2 D. C6H6 E. CH3 – CH2 – NO – CH2 – CH3 mwVK DËi: C. CH3 – CH2 – NH2 e¨vL¨v: CH3 – CH2 – NO2 Sn ––––– HCl CH3 – CH2 – NH2 RUET 01. ZnCl 2 Gi Dcw¯
wZ‡Z †dbj‡K A¨v‡gvwbqvi mv‡_ 300 C o ZvcgvÎv I D”P Pv‡c DËß Ki‡j wK Drcbœ nq? [RUET. 2013-14] A. Benzene B. Benzoic acid C. Glucose D. Nucleic acid E. None mwVK DËi: E. None e¨vL¨v: BUTex 01. NH2 [0] RviK O= =O+NO2+H2O wewµqvq e¨eüZ RviK †KvbwU? [BUTex-2016-17] A. A¤øxq K2Cr2O7 B. ÿvixq KMnO4 C. H2O2 D. HNO3 mwVK DËi: A. A¤øxq K2Cr2O7 e¨vL¨v: A¨vwbwjb A¤øxq K2Cr2O7 Øviv weRvwiZ n‡q c¨viv ‡eb‡RvKzB‡bvb, ÿvixq KMnO4 Øviv weRvwiZ n‡q A¨v‡Rv‡ebwRb Ges H2O2 Øviv weRvwiZ n‡q bvB‡Uªv‡ebwRb Drcbœ K‡i| 02. CH3CONH2(s) + 4[H] LiAlH4 Either A; A ‡h․MwU? [BUTex. 2014-15] A. CH3 – C N B. CH3CH2CH3 C. CH3CH2OH D. CH3CH2NH2 mwVK DËi: D. CH3CH2NH2 e¨vL¨v: CH3CONH2+4[H] 4 LiAlH CH3CH2NH2+ H2O 03. wg_vBj mvqvbvBW Av`ª© we‡køwlZ n‡q †KvbwU Drcbœ K‡i? [BUTex. 2014-15] A. diwgK GwmW B. B_v‡bvwqK GwmW C. wg_vb¨vj D. wg_vbwqK GwmW mwVK DËi: B. B_v‡bvwqK GwmW e¨vL¨v: CH3 – CN H2O CH3 – COOH + NH3 04. A¨vjKvBj mvqvbvBW LiAIH4 Øviv weRvwiZ n‡q wb‡¤œi †Kvb †h․MwU †`q? [BUTex.2012-13] A. A·vBg B. A¨vwgb C. A¨vj‡Kvnj D. A¨vgvBW mwVK DËi: B. A¨vwgb e¨vL¨v: R–CN–––––– LiAlH4 R–CH2–NH2 A¨vwgb| OH +NH3 ZnCl 2 300C NH2 +H2O A¨vwbwjb Drcbœ