Chemistry 1st & 2nd

| অধ্যায় ০১: ল্যাবরেটরেে রিোপদ বযবহাে 1. ‡eviv· Gi ms‡KZ n‡jvK Na2B4O7.10H2O L Na2B3O7.10H2O M Na2S3O8.10H2O N Na2B4O8.10H2O 2. ‡Kvb cøvw÷‡Ki Møvfm ¯^v¯’¨m¤§Z? K j¨v‡U· L bvBUªvBj M wfbvBj N †Udjb 3. ‡mwg gvB‡µv GbvjvBwm‡m bgybvi cwigvY _v‡K .... K 1g L 0.01g M 0.001g N 0.0001g 4. imvqb cixÿvMv‡i e¨eüZ ey¨‡i‡Ui AvqZb cwigv‡ci m~²Zv KZ? K 0.05 ml L 0.01ml M 0.1ml N 1 ml 5. 0.5M bvBwUªK Gwm‡Wi bgybv †_‡K 100mL 0.1M HNO3 `ªeY cÖ¯‘Z Ki‡Z KZ mL cvwb cÖ‡qvRb n‡e? K 20 L 50 M 80 N 90 6. Pvi wWwRU e¨v‡jÝ w`‡q me©wb¤œ KZ wgwjMÖvg fi †bIqv hvq? K 0.1 L 0.01 M 0.001 N 0.0001 7. 250ml 0.1M Na2CO3 `ªeY cÖ¯‘Z Ki‡Z KZ cwigvY Na2CO3 `iKvi? K 160g L 2.65g M 26.5g N 10.6g 8. wb‡¤œv³ †Kvb c`v_©wU nvucvwb †ivM m„wó K‡i? K KOH L NH4OH M H2SO4 N HNO3 9. j¨ve‡iUwi‡Z A‡cvjvi ˆRe c`v_© cwi®‹vi Ki‡Z †KvbwU e¨eüZ nq? K A¨vj‡Kvnj L †ebwRb M cvwb N wg_vbj 10. 10.6 MÖvg Na2CO3 cwigv‡ci Rb¨ wb‡Pi †Kvb hš¿wU e¨envi Kiv nq? K wc‡cU L ey‡iU M cj eyw½ e¨v‡jÝ N AvqZbwgwZK d¬v¯‹ 11. ‡cv‡m©wjb evwU‡Z m‡ev©”P KZ wWwMÖ †mjwmqvm ZvcgvÎv †Zvjv hvq? K 1700C L 1500C M 1000C N 500C 12. gvB‡µv A¨vbvjvBwmm c×wZi †ÿ‡Î bgybv KZ cwigvY cÖ‡qvRb nq? K 100mg L 90mg M 30mg N 5mg 13. wd«qb-12 Gi ms‡KZ n‡jvK CFCl3 L CF2Cl2 M CF3Cl N C2F2Cl4 14. wb‡¤œ †Kvb †hŠMwU KvP `ªe¨ cwi®‹vi Kivi Rb¨ e¨envi Kiv nq? K ‡µvwgK GwmW L mvjwdDwiK GwmW M bvBwUªK GwmW N cvi‡K¬vwiK GwmW 15. evqy `~lY †iva Ki‡Z M‡elYvMv‡i H2S Gi cwie‡Z© †Kvb †hŠM e¨eüZ nq? K _v‡qvBDwiqv L _v‡qv A¨vwm‡UvgvBW M A¨v‡gvwbqv N dmwdb 16. cj-eyw½ e¨v‡j‡Ýi mvnv‡h¨ wbfz©jfv‡e cwigvc Kiv hvqK 0.01g L 0.1g M 0.001g N 0.0001g 17. wc‡c‡Ui †¯‹j ‡Kvb GK‡K `vMvsK…Z _v‡K? K wjUvi L wK‡jvwgUvi M wgwjwjUvi N wgwjwgUvi 18. 100mL 0.1M H2SO4 `ªeY ˆZwi Ki‡Z wK cwigvY H2SO4 cÖ‡qvRb n‡e? K 0.098g L 0.98g M 9.8g N 98g 19. 250ml †Wwm‡gvjvi `ªe‡Y KZ MÖvg H2SO4 Av‡Q? K 2.45g L 2.54g M 4.9g N 9.8g 20. ‡Pv‡Li wbivcËvi Rb¨ j¨ve‡iUwi‡Z Kx ai‡bi Pkgv e¨envi Kiv nq? K wbivc` Pkgv L ivmvqwbK ¯úøvm MMjm M mvaviY Pkgv N iwOb Pkgv 21. Iqvk †evZ‡ji KvP bj `ywU KZ wWwMÖ †Kv‡Y evuKv‡bv _v‡K? K 60 I 120 L 45 I 135 M 50 I 130 N 55 I 125 22. j¨ve‡iUwi‡Z Kv‡Pi hš¿cvwZ cwi®‹vi Kivi ci wb‡Pi †Kvb †hŠMwU Øviv wic Ki‡Z nq? K ‡cÖvcvbj L †cÖvcvb¨vj M †cÖvcv‡bvb N †cÖvcvbwqK GwmW 23. eZ©gvb we‡k¦i eR¨© cwiZ¨v‡Mi me‡P‡q ¸iæZ¡c~Y© welq n‡jvK wimvB‡Kwjs L cywo‡q †djv M mywbw`©ó RvqMvq msiÿY N mvaviYfv‡e †Wª‡b †djv

| 24. 0.1 †gvjvi Na2CO3 Gi Rjxq `ªe‡Y KZ MÖvg Na2CO3 `ªexf~Z Av‡Q? K 10.6 L 1.06 M 10.5 N 0.106 25. eyb‡mb `xc wkLvi `xwßgvb wkLv‡K wK e‡j? K RviY wkLv L weRviY wkLv M wiW· wkLv N AwMœ wkLv 26. wbLyuZfv‡e †Kvb Zij cwigv‡ci Rb¨ wb‡Pi †KvbwU e¨eüZ nq? K exKvi L KwbK¨vj d¬v¯‹ M gvcb †PvO N wc‡cU 27. F Gi Zwor FYvZ¥KZv KZ? K 4 L 3 M 2.8 N 2.5 28. eR¨© ivmvqwbK c`v‡_©i Rb¨ †Kvb ai‡bi Kb‡UBbvi e¨envi Ki‡Z nq? K Kv‡Pi L Kv‡Vi M †jvnvi N gvwUi 29. ‡Kv‡bv wbw`©ó AvqZ‡bi `ªeY‡K GKcvÎ †_‡K Ab¨cv‡Î mwVKfv‡e ¯’vbvšÍi Kiv hvq wb‡Pi †KvbwU Øviv? K wc‡cU L ey¨‡iU M †U÷wUDe N weKvi 30. ‡Kvb M¨vmwU gvby‡li g„Zz¨ NUv‡Z mÿg? K O2 L N2 M C2H5OH N HCN 31. ‡KvbwU `vn¨ c`v_©? K CH3CH2OH L CHCl3 M NH3 N C6H6 32. ‡µvwgK GwmW †KvbwU? K Mvp K2Cr2O7 I H2SO4 Gi `ªeY L K2Cr2O7 I Mvp H2SO4 `ªeY M K2Cr2O7 I jNy H2SO4 Gi `ªeY N Na2Cr2O7 I Mvp H2SO4 Gi `ªeY 33. m‡›`nfvRb K¨vÝvi m„wóKvix c`v_© †KvbwU? K K2Cr2O7 L CrO2Cl2 M Na2Cr2O7 N HClO4 34. GHS Gi c~Y©iƒcK Global Health System L Globalised Health Security M Global Harmonised System N Global Haritage Security 35. ‡Kvgj Møvm‡K Kx e‡j? K wd¬›U KvP L cvB‡i· KvP M wKg¨v· KvP N IqvP KvP 36. ‡KvbwU RviY Zij c`v_©? K ‡µvwgK GwmW L Ca nvB‡cv‡K¬vivBU M †divm ‡K¬vivBW N Na bvBUªvBU 37. GwmW e„wói Rb¨ `vqx †KvbwU? K NH3 L CH4 M SO2 N CO 38. ‡KvbwU DØvqx? K C6H6 L NaCl M PbCl2 N MgCl2 39. ievU© eyb‡m‡bi `x‡c KqwU Ask Av‡Q? K 1 L 2 M 3 N 4 40. wkLv cixÿvq K + †Kvb eY© aviY K‡i? K ‡e¸wY L jvj M njy` N †mvbvjx njy` 41. 4-wWwRU e¨v‡j‡Ýi m~²Zv KZ? K 0.01 L 0.001 M 0.0001 N 0.00001 42. wdwRI‡_ivwc‡Z e¨envi Kiv nqK IR iwk¥ L UV iwk¥ M X-ray N iwk¥ 43. ivmvqwbK `ªe¨vw` †h cv‡Î ivLv nq †m cv‡Îi Mv‡q †j‡ewjs Kiv nq †Kb? K `ªe¨wUi cwiPq Rvbvi Rb¨ L `ªe¨wUi fi Rvbvi Rb¨ M `ªe¨wUi AvqZb Rvbvi Rb¨ N `ªe¨wUi `ªve¨Zv Rvbvi Rb¨ 44. gv‡µv GbvjvBwUK c×wZ‡Z †h ivmvqwbK c`v_© e¨eüZ nq Zvi fi I AvqZb KZ? K 50mg 1 mL L 5mg 0.1mL M 1g 10mL N 0.5mg 1 mL 45. welv³ †K¬v‡ivdig Gi cwie‡Z© †KvbwU e¨envi DËg? K C6H14 L C6H12 M C5H12 N C5H10 46. ey¨‡iU cwi®‹vi Kivi †ÿ‡Î †KvbwU e¨eüZ nq? K HNO3 L K2Cr2O7+H2SO4 M N2SO4 N HCl 47. j¨ve‡iUwi‡Z e¨eüZ toxic Dcv`vb †KvbwU? K ‡ebwRb L B_vbj M †mvwWqvg †K¬vivBW N †divm mvj‡dU 48. wb‡¤œi †Kvb ivmvqwbK Dcv`vbwU K¨vÝvi m„wói Rb¨ `vqx? K SO2 M¨vm L bvB‡UªvwMømvwib M A¨vm‡e÷m N †jW 49. A‡cvjvi ˆRe †hŠM cwi®‹vi Ki‡Z e¨envi Kiv nqK A¨vj‡Kvnj L †ebwRb M cvwb N B_vbj 50. ey¨‡iU †_‡K KZ AvqZb ch©šÍ mwVK cwigvc Kiv hvq?

| K .1 cm3 L .01 cm3 M 1 cm3 N .001 cm3 51. wb‡¤œi †KvbwU nvucvbx m„wó K‡i? K KOH L NaOH M NH4OH N Al(OH)3 52. wb‡¤œi †KvbwU weRviK c`v_©? K H2SO4 L HNO3 M K2Cr2O7 N LiAlH4 53. 200cm3 `ªeY 10.6g Na2CO3 `ªe¨ `ªexf~Z _vK‡j `ªe‡Yi †gvjvwiwU n‡eK 0.05M L 0.5M M 0.1M N 0.01M 54. Aby¾¡j wkLvq KqwU †Rvb Av‡Q? K 1 L 2 M 3 N 4 55. e¨envwiK †ÿ‡Î CCl4 welv³ weavq Gi cwie‡Z© †KvbwU e¨envi Kiv DËg? K UjyBb L †n‡·b M weDUvbj N K2CO3 56. we‡ùviK c`v_© †KvbwU? K cviA·vBW L Wvqv‡Rvwbqvg jeY M KCN N P2O5 57. bxj KvP ˆZwi‡Z e¨eüZ nqK NiO L Fe2O3 M MnO2 N CoO 58. ‡KvbwU †cÖvwUqvg? K H 1 1 L H 2 1 M Pr N Po 59. 2-wWwRU e¨v‡jÝ me©wb¤œ KZ ch©šÍ cwigvc Kiv hvq? K 1 MÖv‡gi 10000 fv‡Mi GK fvM L 1 MÖv‡gi 1000 fv‡Mi GK fvM M 1 MÖv‡gi 100 fv‡Mi GK fvM N 1 fv‡Mi 10 fv‡Mi GK fvM 60. wbLyuZfv‡e †h‡Kv‡bv cwigvY Zi‡ji AvqZb gvcvi Rb¨ wb‡Pi †Kvb hš¿wU e¨envi Kiv nq? K weKvi L KwbK¨vj d¬v· M ‡gRvwis wmwjÛvi N ey¨‡iU 61. eZ©gv‡b Iqvk †evZj wn‡m‡e ‡KvbwU e¨envi Kiv n‡”Q? K ‡jvnvi †evZi L cøvw÷‡Ki †evZj M gvwUi †evZj N w÷‡ji †evZj 62. UvB‡Uªk‡bi mgq `ªeY‡K cvÎ n‡Z KwbK¨vj d¬v‡¯‹ wb‡Z e¨eüZ nqK ‡gRvwis wmwjÛvi L ey¨‡iU M wc‡cU N Wªcvi 63. we‡ùviK c`v_© †KvbwU? K KCN L cviA·vBW M Wvqv‡Rvwbqvg jeY N P2O5 64. wb‡Pi †Kvb c`v_©‡K eyb‡mb `xc wkLvq mivmwi Zvc †`qv hvq bv? K ‡ebwRb L cvwb M B_vbj N †K¬v‡ivdig 65. wb‡¤œi †Kvb ivmvqwbK `ªe¨ RwÛm/wjfvi wm‡ivwm‡mi Rb¨ `vqx? K NaOH/KOH L HCl/H2SO4 M n¨v‡jv‡Rbhy³ †hŠM N Na/NaH 66. n¨v‡jv‡Rbhy³ †hŠ‡Mi ÿwZ wb‡`©kK mZK©xKiY wPý †KvbwU? K L M N 67. ey¨‡i‡Ui ÷cK‡K©i ˆZjv³ c`v_© cwi®‹vi Ki‡Z Kx cÖ‡qvRb nq? K A¨vj‡Kvnj L cvwb M jNy HCl `ªeY N †µvwgK GwmW wgkÖY 68. cj-eyw½ e¨v‡j‡Ýi m~²-cwigv‡ci ÿgZv KZ ch©šÍ? K 0.1g L 0.01g M 0.003g N 0.00004g 69. 0.1M HCl `ªeY ˆZwi‡Z Mvp HCl GwmW cwigv‡ci Rb¨ †Zvgvi e¨envi Ki‡Z n‡eK AvqZwbK d¬v¯‹ L wc‡cU M gvcb wmwjÛvi N Iqvk †evZj 70. ‡MvjZjx d¬v‡· HCl M¨vm ˆZwi‡Z d¬v·wU‡K DËß Kivi †ÿ‡Î †KvbwU cÖ‡qvRb n‡e bv? K ZviRvwj L K¬¨v¤ú, wis ÷¨vÛ M evbv©i N A¨vm‡e÷m 71. GKwU Zij e¯‘i †h †Kvb AvqZ‡b mwVKfv‡e cwigv‡ci Rb¨ wb‡Pi †Kvb hš¿wU e¨envi Kiv DwPr n‡e? K ey‡iU L wc‡cU M `vMvvw¼Z I AvqZbwgwZK d¬v¯‹ N `vMvw¼Z wc‡cU 72. Møvm †_‡K me ai‡bi gqjv `~i Kivi Rb¨ me‡P‡q mwµq e¯‘ †KvbwU? K HCl(aq) L HF(aq) M HNO3(aq) N K2CrO7(aq) wgwkÖZ H2SO4(aq) 73. UvB‡Uªkb Ki‡Z e¨eüZ nqK ‡MvjZwj d¬v¯‹ L P¨vÞvZjx d¬v¯‹ M kxZK N KwbK¨vj d¬v¯‹

| 74. gvwUi pH - K 7.0 -8.0 L 13.0-14.0 M 2.0-3.0 N 5.0-6.0 75. ‡cv‡m©wjb evwU‡Z m‡ev©”P KZ wWwMÖ †mw›U‡MÖW ch©šÍ Zvc †`qv hvq? K 1700 L 1500 M 1000 N 500 76. Mvp GwmW wb‡q KvR Kivi mgq wb‡Pi †Kvb wbivcËv mvgMÖx e¨envi Kiv Riæix? K n¨vÛ Møvfm L gv¯‹ M A¨v‡cÖvb N wbivc` KvP 77. 5g Na2CO3 cwigv‡ci Rb¨ wb‡Pi †Kvb hš¿wU e¨envi Kiv nq? K wc‡cU L ey¨‡iU M cj eyw½ e¨v‡jÝ N AvqZbwgwZK d¬v¯‹ 78. 250ml, 350ml cvwZZ cvwb †g‡c `ywU †MvjZjx d¬v‡¯‹ ivLv `ªe‡Y †hvM Ki‡Z wb‡Pi †Kvb DcKiYwU e¨envi Ki‡e? K wc‡cU L ey¨‡iU M †gRvwis wmwjÛvi N exKvi 79. j¨ve‡iUwi‡Z KvR Kivi mgq †eªvwgb Øviv nvZ cyo‡j wb‡Pi †KvbwU e¨envi Kiv DwPr? K `ye©j NH4OH ÿvi L wMømvwib M LyeB `ye©j GwmW N jNy A¨v‡gvwbqv `ªeY 80. ey¨‡iU I Kwb‡Kj d¬v‡¯‹i g‡a¨ mv`„k¨ †Kv_vq? K DfqwU‡Z ivmvqwbK `ª‡e¨i mswgkÖY NUv‡bv nq L DfqB `ªeY‡K DËß Ki‡Z e¨eüZ nq M DfqB UvB‡Uªk‡b e¨eüZ nq N ey¨‡iU AvqZwbK we‡køl‡Y e¨eüZ n‡jI Kwb‡Kj d¬v¯‹ AvqZwbK we‡køl‡Y e¨eüZ nq bv 81. j¨ve‡iUwi‡Z kix‡ii Z¡K I †cvkvKw`‡K myiÿvi Rb¨ Kx cwiavb Ki‡Z nq? K G‡cÖvb L gv¯‹ M n¨vÛ Møvf N wbivc` Pkgv 82. j¨ve‡iUwi‡Z e¨eüZ ivmvqwbK c`v_© Kxiƒc †ivM m„wó K‡i? K K¨vÝvi L h²v M nvucvbx N Wvqwiqv 83. A‰Re bgybv Gi avivevwnK Avw½K we‡kølY wb‡Pi †Kvb M¨vmwU Drcbœ nq? K O2 L CO2 M Cl2 N N2O 84. j¨ve‡iUwi‡Z †Kgb †cvkvK cwiavb Kiv DwPZ? K nvdnvZv kvU© L †Xvjv dzjnvZv M wmb‡_wUK Kvc‡oi N KUb ev mywZ Kvc‡oi 85. wb‡Pi †KvbwU ‡µvwgK GwmW? K K2Cr2O7 + HSO4 L K2Cr2O7 + K2SO4 M K2Cr2O7 + H2SO4 N Cr2(SO4)3 + HCl 86. wb‡Pi †Kvb `ªveKhy³ Møvm mvgMÖx ‡aŠZKi‡Y wdDg ûW e¨eüZ nq? K ‡n‡·b L jNy HCl M Mvp H2SO4 N jNy H2SO4 87. `ªæZ ﮋKi‡Yi Rb¨ wb‡Pi †Kvb †hŠMwU e¨eüZ nq? K A¨vwm‡Uvb L †K¬v‡ivdg© M †n‡·b N †eb‡RvwqK GwmW 88. gvB‡µvI‡f‡b KvuPcv·K KZ C ZvcgvÎvq ïKv‡bv nq? K 100-118C L 100-110C M 70-90C N 95-98C 89. cwigvYMZ we‡køl‡Y wb‡Pi †Kvb hš¿wU e¨eüZ nq? K eys‡M e¨v‡jÝ L wWwRUvj e¨v‡jÝ M m¨v‡Uv©wiqvj e¨v‡jÝ N ‡gRvwis wmwjÛvi 90. wb‡Pi †KvbwU †m‡KÛvix ÷¨vÛvW© c`v_©? K K2Cr2O7 L Na2CO3 M H2C2O4 N HCl 91. cÖvBgvix ÷¨vÛvW© c`v‡_©i fi cwigv‡c †Kvb hš¿wU Dc‡hvMx? K 2-wWwRUj e¨v‡jÝ L eys‡M e¨v‡jÝ M 4-wWwRU e¨v‡jÝ N m¨v‡U©vwiqvj e¨v‡jÝ 92. 200mL `ªe‡Y Na2CO3 Gi fi KZ? hLb NbgvÎv 2M? K 4.2410–3 kg L 4.14 gm M 3.21 gm N 2.41 gm 93. ‡m‡KÛvix `ªeY cÖ¯‘Z Kivi Rb¨ †KvbwU e¨eüZ nq? K gvcb wmwjÛvi L 2-wWwRU e¨v‡jÝ M 4-wWwRU e¨v‡jÝ N m¨v‡U©wiqvj e¨v‡jÝ 94. wb‡Pi wewµqv †_‡K HCl Gi NbgvÎv wnmve Ki? Ca(OH)2 + 2HCl CaCl2 + 2H2O, ‡hLv‡b, Ca(OH)2 Gi AvqZb 3.110–3L. NbgvÎv .02M, HCl Gi AvqZb 1.0310–3L. K .03 L .03M M .02 N .01M 95. wb‡Pi †KvbwU `vn¨ c`v_©? K KO2 L N2O M Na2O2 N CaO 96. c`v‡_©i a‡g©i Rb¨ G‡K †K‡ivwm‡bi wb‡P ivLv nq? K weRviY L RviY M we‡ùviK N `vn¨ 97. ‡Kvb †hŠMmg~n dzmdz‡m cÖ‡ek Ki‡j i‡³ Aw·‡Rb PjvPj n«vm cvq? K A¨vRvBW L cvi·vBW M I‡RvbvBW N mvqvbvBW 98. wb‡Pi wP‡Î †Kvb mZ©KxKiY cÖZxK †`Lv‡bv n‡q‡Q?

| K ÿwZKviK L welv³ M D‡ËRK N ÿqKvix 99. wb‡Pi wP‡Î †Kvb mZ©KxKiY cÖZxK †`Lv‡bv n‡q‡Q? K `vn¨ c`v_© L we‡õviK M †ZRw¯Œq N RviK 100. AwZwi³ ÿviK‡K cÖkwgZ Kivi Rb¨ †KvbwU e¨eüZ nq? K Na2SO4 L KHSO4 M NaHSO4 N H2SO4 অধ্যায় ০২: গুণগত েসায়ি 1. wb‡Pi †Kvb AiweUvjwU Am¤¢e? K 1s L 2p M 3f N 4d 2. gw¯Í‡®‹i wPwKrmvq †KvbwU e¨eüZ nq? K MRI L X-ray M IR N UV 3. Rf Gi gvb m‡ev©”P KZ n‡Z cv‡i? K 1 L 2 M 3 N 4 4. ‡Kvb †RvowU AvB‡mv‡Uv‡bi D`vniY? K S, P 30 15 32 16 L H, He 4 2 2 1 M Cl, Cl 35 17 37 17 N O, C 14 6 16 8 5. Rvj UvKv kbv³Ki‡Y wb‡¤œi †KvbwU e¨eüZ nq? K IR L NMR M MRI N UV 6. myMwÜ dzj †_‡K wbhv©m †ei Kiv nq †Kvb c×wZ‡Z? K cvZb L ev®ú cvZb M DaŸ©cvZb N weaŸsmx cvZb 7. wb‡Pi †Kvb AiweUvj me©wb¤œ kw³ m¤úbœ? K 3d L 4s M 4p N 3s 8. cÖæwmqvb eªæ i‡Oi `ªeY nq wb‡¤œi †Kvb †hŠ‡Mi Rb¨? K KFe[Fe(CN)6] L Fe3[Fe(CN)6]3 M K2[Fe(CN)6] N K3[Fe(CN)6] 9. 150 MÖvg Gi mgcwigvY GKwU `ªe‡Y 50 MÖvg `ªe `ªexf~Z Av‡Q| †mB `ªeY‡K kxZj Ki‡j hw` 10 MÖvg `ªe Aatwÿß nq Z‡e †k‡lv³ Ae¯’vq `ªve¨Zv KZ n‡e? K 10 L 40 M 50 N 100 10. GKB Dckw³ ¯Í‡ii †hme AiweUv‡ji kw³ Awfbœ Zv‡`i‡K ejv nq K wW‡Rbv‡iU L bb-wWRvbv‡iU M Equivalent N Aa©c~Y© AiweUvj 11. wiWevM© aªæ‡Ki gvb KZ? K 1.097107 m–1 L 1.097107 cm–1 M 1.097105 m–1 N 1097107 m–1 12. A¨v‡gvwbqvi je‡Y †bmjvi weKviK †hvM Ki‡j †KvbwUi Aat‡ÿc c‡o? K HgI2 L Hg2I4 M NH2[Hg2I3] N [Cu(NH)4]SO4 13. `„k¨gvb Av‡jvi Zi½‰`N¨© KZ (nm)? K 200-500 L 300-600 M 400-700 N 500-800

| 14. ‡K¬vwib cigvYyi AhyM¥ B‡jKUªb Gi †ÿ‡Î †Kvb †Kvqv›Uvg ‡mUwU cÖ‡hvR¨? K n = 2, ℓ = 1, m = 0 L n = 2, ℓ = 1, m = –1 M n = 3, ℓ = 1, m = 1 N n = 3, ℓ = 0, m = 0 15. cÖ‡Z¨K d AiweUv‡j mev©waK KqwU B‡jKUªb _vK‡Z cv‡i? K 2 L 5 M 6. N 10 16. fi msL¨vi wfbœZvi Kvi‡Y †KvbwU Drcbœ nq? K AvB‡mv‡Uvc L AvB‡mvevi M AvB‡mv‡Uvb N AvB‡mvgvi 17. ‡Kvb `ywU cigvYy ci¯ú‡ii AvB‡mv‡Uvb? K Si, S 32 16 30 14 L P, S 33 14 31 15 M N, O 16 8 14 7 N H, H 2 1 1 1 18. mvaviY B‡jKUªb web¨v‡mi wbq‡gi e¨wZµg †`Lvq wb‡Pi †Kvb †gŠjwU? K Mn L Br M La N As 19. wb‡Pi †Kvb †mUwU AvB‡mv B‡jKUªb? K Mg2+, Ne, O2– L Mg2+, Na+ , Cl– M O 2– , Ne, K+ N Al3+, Ne, Cu2+ 20. cvwb‡Z A`ªeYxq wKš‘ ÷xg I D×vqx ˆRe †hŠM †Kvb cÖwµqvq we‡kvab Kiv nqK ev®ú cvZb L DaŸ©cvZb M †Kjvmb N cvZb 21. mwbœKU IR(NIR) Gi AvIZv n‡”QK 3000-8000 nm L 750-1400 nm M 647-700nm N 585-647m. 22. Mv‡Qi cvZ I evKj n‡Z A¨vjKvj‡qW RvZxq Jla wb®‹vkb Kiv nq †Kvb c×wZ‡Z? K ev®ú cvZb L `ªveK wb®‹vkb M DaŸ©cvZb N wb¤œPv‡c cvZb 23. nvB‡Wªv‡Rb eYv©wji c¨v‡ðb wmwi‡Ri †iLv¸wj wb‡Pi †Kvb A‡j cvIqv hvq? K Ae‡jvwnZ L `„k¨gvb M AwZ‡e¸wb N gvB‡µvI‡qf 24. i³Pvc cÖkg‡b wb‡¤œi †Kvb iwk¥ e¨eüZ nq? K AwZ‡e¸wb L `„k¨gvb M Ae‡jvwnZ N G·‡i 25. iv`vi‡dv‡W©i Avjdv KYv we”QziY cixÿv wb‡Pi †KvbwU m¤úK‡K© aviYv †`q? K cigvYyi L wbDwK¬qv‡mi M B‡jKUª‡bi N wbDUª‡bi 26. Cr Gi †hvRbx ¯Í‡ii B‡jKUªb web¨vm †KvbwU? K 3d5 4s1 L 3d6 4s0 M 3d4 4s2 N 3d5 4s0 27. wg_vbj, †ebwRb Ges UjyB‡bi wgkÖY †_‡K †ebwRb c„_KKv‡j KZ ZvcgvÎvq †ebwR‡bi cvZb ïiæ nq? K 64C L 78.15C M 81C N 111C 28. ‡Mvjv‡ci cvcwo †_‡K †MvjvcRj ˆZwii cÖwµqv n‡jvK cvZb L wid¬v¯‹ M `ªveK wb¯‹vkb N ev®úcvZb 29. Rvj UvKv kbv³ Kivi Rb¨ UvKvq hy³ i‡q‡Q? K cÖwZcÖfv c`v_© L AbycÖfv c`v_© M ‡PŠ¤^K c`v_© N †ZRw¯Œq c`v_© 30. ‡e¸wY iwk¥i Zi½ ˆ`N¨© 4100Å n‡j Zi½ msL¨v KZ? K 2.43910–4 cm–1 L 2.439104 cm–1 M 2.43910–8 nm–1 N 2.439104 m–1 31. s-Dc¯Í‡i KqwU AiweUvj Av‡Q? K 1wU L 4wU M 7wU N 14wU 32. wb‡¤œi †Kvb wmwi‡Ri eYv©wj `„k¨gvb GjvKvq cvIqv hvq? K jvBg¨vb wmwiR L dvÛ wmwiR M evgvi wmwiR N eªv‡KU wmwiR 33. weøwPs cvDWv‡ii ivmvqwbK bvg Kx? K K¨vjwmqvg nvB‡cv‡K¬vivBU L K¨vjwmqvg †K¬vivBU M K¨vjwmqvg †K¬v‡iv nvB‡cv †K¬vivBU N K¨vjwmqvg †K¬v‡iv nvB‡cv †eªvgvBU 34. wm³ cixÿvq Na+ Gi eY©? K mv`v L †mvbvjx njy` M njy` N jvj 35. cÖavb †Kvqv›Uvg msL¨v Kx wb‡`©k K‡i? K Kÿc‡_i AvKvi L Kÿc_ †_‡K Kÿc‡_i `~iZ¡ M Kÿc‡_i AvK…wZ N Kÿc‡_i e¨vm 36. MRI c×wZ cÖwZwôZK wbDwK¬qvi †PŠ¤^Kxq AbyiYb Gi Dci L †gwW‡Kj Ae‡jvwnZ _vg©MÖvwdi Dci M †iwWI wd«Kz‡qÝxi wmMbv‡ji Dci N †PŠ¤^Kxq AbyiYb cÖwZ”Qwei Dci 37. kix‡ii †fZi wUDgvi RvZxq †Kv‡bv wKQzi Dcw¯’wZ kbv³ Kiv nq wK‡mi gva¨‡g? K Laser †_ivwc L X-ray †_ivwc M IR †_ivwc N MRI †_ivwc 38. MRI Gi †Kvb wbDwK¬qvmwU mPivPi e¨eüZ nq?

| K H L F M P N C 39. 24 2 12 Mg Gi kw³¯Í‡i B‡jKUªb KqwU? K 12 L 24 M 10 N 18 40. wkLv cixÿvq wb‡Pi †Kvb Avq‡bi eY© †cvov B‡Ui g‡Zv jvj? K Na+ L K – M Cu++ N Ca++ 41. ‡bmjvi `ªeY I NH3 mn‡hv‡M ev`vwg Aat‡ÿ‡ci ms‡KZ n‡jvK NH4ClHgI2 L HgI2 M Cu2[Fe(CN)6] N NH2[Hg2I3] 42. ‡ewiqvg wkLv cixÿvq wK eY© †`q? K ‡mvbvjx njy` L meyRvf bxj M njy`vf meyR N B‡Ui g‡Zv jvj 43. Mo(42) Gi B‡jKUªb web¨vmK –4d2 5s1 L 4d5 5s1 M 4d6 5s0 N –5s1 5p6 44. ‡KvbwU i‡³ O2 Gi cwigvY evovq? K Ae‡jvwnZ iwk¥ L `„k¨gvb Av‡jv M AwZ‡e¸wb iwk¥ N Mvgv iwk¥ 45. wkLv cixÿv KLb e¨envi Kiv nq? K n¨vjvBW kbv³ Ki‡Z L AavZzi GwmW kbv³ Ki‡Z M ARvbv avZe Avqb‡K kbv³ Ki‡Z N ARvbv Gwm‡Wi NbgvÎv wbY©q Ki‡Z 46. ‡K¬vwib M¨v‡mi eY© Kxiƒc? K bxjvf mv`v L bxjvf meyR M jvj N eY©nxb 47. ‡ivM kbv³Ki‡Y †KvbwU e¨eüZ n‡e? K ‡µvgv‡UvMÖvwd L MRI M IR N NMR 48. ‡KvbwU cvwb MÖvmx? K CaCl2 L MgSO4 M CaSO4 N NaCl 49. Al3+ Avqb kbv³Ki‡Y †Kvb e‡Y©i Aat‡ÿc c‡o? K nvjKv bxj L Mvp bxj M ev`vgx N mv`v 50. me‡P‡q fvix KYv n‡jvK Avjdv L weUv M †cÖvUb N wbDUb 51. ‡Kvb iwk¥i Zi½ ˆ`N¨© †ewk? K `„k¨gvb L Ae‡jvwnZ M Mvgv N gnvRvMwZK 52. ‡KvbwU wPwKrmvkv‡¯¿ eZ©gvb eûj e¨eüZ? K MRI L X-ray M †µv‡gv‡UvMÖvdx N IR 53. wb‡¤œi †Kvb eY©vjx †iLv `„k¨gvb A‡j †`Lv hvqK wjg¨vb wmwiR L evgvi wmwiR M c¨v‡kb wmwiR N dzÛ wmwiR 54. ‡KvbwU `ªve¨Zv bxwZ‡Z mwVK? K Ksp S L S = Ksp M S = Ks 2P N Ksp = S 55. ‡Kvb KwYKvi ¯’vwqZ¡ me‡P‡q Kg? K B‡jKUªb L †gmb M wbDUªb N †cÖvUb 56. Cr3+ Avq‡b AhyM¥ ev we‡Rvo B‡jKUªb msL¨v KZwU? K 6wU L 5wU M 4wU N 3wU 57. nvB‡Wªv‡Rb eYv©wj‡Z cÖvß jvB‡gb wmwiR †Kvb A‡ji? K `„k¨gvb L AwZ‡e¸wb M Ae‡jvwnZ N `~i Ae‡jvwnZ 58. myMwÜhy³ dzj n‡Z wbhv©m msMÖn Kiv nqK cvZb cÖYvjx L AvswkK cvZb cÖYvjx M ev®úcvZb cÖYvjx N DaŸ©cvZb cÖYvjx 59. M GKwU cigvYy, hvi cvigvYweK msL¨v 24| †gŠjwUi Ae¯’vb AvaywbK chv©q mviwY‡ZK MÖæc-6 chv©q-3q L MÖæc-6 chv©q-4_© M MÖæc-2 chv©q-4_© N MÖæc-1 chv©q-4_© 60. ‡KŠwYK fi‡eM welqK gZev` n‡Z cvIqv hvq †KvbwU? K 2 h mv L h mv M h mc N 2 nh mvr 61. n = 1 n‡j m = ? K 0 L 1 M 1, 0, 1 N –1, 0, +1 62. `„k¨gvb Av‡jvi Zi½ ˆ`N¨© n‡jvK 380-780 nm L 500-575 nm M 780 nm N 380 nm 63. wb‡¤œi †Kvb c`v_©wUi Kvi‡Y wkLv cixÿvq eY© †`Lv hv‡e? K HCl GwmW L †eviv·¸wU M FeSO4 N H2SO4 64. 3d AiweUv‡ji †ÿ‡Î n Ges Gi gvb †KvbwU? K n = 3, ℓ = 1 L n = 3, ℓ = 2 M n = 4, ℓ = 2 N n = 3, ℓ = 3

| 65. avivevwnK MÖæc we‡køl‡Y wb‡Pi †Kvb g~jKwU gpv Gi AšÍfz©³? K Zn2+ L Fe2+ M Ca2+ N NH4 66. iv`vi‡dvW© ¯^Y©cvZ cixÿvi Rb¨ KZ cyiæ‡Z¡i ¯^Y©cvZ e¨envi K‡i‡Qb? K 0.004 cm L 0.004 m M 0.0004 cm N 0.000004m 67. wkLv cixÿvq Ca2+ Avq‡bi eY©- K Mvp jvj L nvjKv meyR M B‡Ui gZ jvj N †mvbvjx njy` 68. ‡µvgv‡UvMÖvwd‡Z KqwU `kv _v‡K? K 1 L 2 M 3 N 4 69. BD‡iwbqv‡gi cvigvYweK msL¨v †KvbwU? K 82 L 92 M 102 N 112 70. ‡µvgv‡UvMÖvwd c×wZ D™¢veb K‡ib †K? K ‡mv‡qU L wMjvW© M ncwKbm N GWIqvW© 71. AiweUvj msL¨v wbY©‡qi m~Î †KvbwU? K (2+2) L 2(2+1) M (2+1) N (4+2) 72. bxj e‡Y©i Zi½‰`N¨© 520nm Gi kw³ KZ? K 0.03810–17J L 3.821015J M 3.810–10J N 3.8810–11J 73. jvj Av‡jvi Zi½ ˆ`N¨© KZ nm? K 380-424 nm L 500 nm M 590 nm N 780 nm 74. 92U ‡_‡K KYv wewKwiZ n‡j Drcbœ nqK 80AC L 90Th M 91Pa N 93Np 75. ‡Kvb AiweUvjwUi kw³ †ewk? K 4s L 3p M 4p N 3d 76. CO †hŠ‡Mi m‡ev©”P Absorbance Gi Zi½ msL¨vK 3958 cm–1 L 2143 cm–1 M 2885 cm–1 N 2230 cm–1 77. wkLv cixÿvq †mvwWqvg †Kvb eY© aviY K‡i? K bxj L jvj M †mvbvjx njy` N †e¸wb 78. ‡evi g‡W‡j e„ËvKvi Kÿc‡_ B‡jKUª‡bi †KŠwYK fi‡eM KZ? K 2 nh mvr L 2r n mvr M 2 r nh mvr N 2 h mvr 79. B‡jKUªbmg~n kw³ wewKiY K‡i 5g kw³¯Í‡i wd‡i Avm‡j G‡`i †Kvb wmwiR ejv nq? K evgvi wmwiR L dzbW wmwiR M c¨v‡kb wmwiR N c¨v‡ðb wmwiR 80. weUv iwk¥ Kx? K ‡cÖvU‡bi cÖevn L B‡jKUª‡bi cÖevn M wnwjqvg wbDwK¬qv‡mi cÖevn N wbDUª‡bi cÖevn 81. AiweUv‡ji kw³ wbiƒc‡Yi MvwYwZK mgxKiY †KvbwU? K n +1 L m + 1 M s + 1 N m + n 82. ‡iLv eYv©jx m„wói KviY †KvbwU? K D‡ËwRZ B‡jKUª‡bi †kvlY L B‡jKUª‡bi N~Y©b M D‡ËwRZ B‡jKUª‡bi c~e©eZx kw³¯Í‡i AvMgb N D‡ËwRZ B‡jKUª‡bi cieZx© kw³¯Íi AvMgb 83. 3p AiweUv‡ji †ejvq n I Gi gvb †KvbwU n‡e? K n = 2, ℓ = 1 L n = 3, ℓ = 0 M n = 3, ℓ = 1 N n = 3, ℓ = 2 84. ‡evi gZev` Abyhvqx 3q Aiwe‡Ui †KŠwYK fi‡eM KZ? K 2 h L 3h M 2h N 2 3h 85. wkLv cixÿvq K Gi eY©- K njy` L KvuPv Av‡c‡ji g‡Zv M B‡Ui g‡Zv jvj N †e¸wb 86. ‡e¸wb iwk¥i Zi½ ˆ`N¨© KZ b¨v‡bvwgUvi? K 380-424 L 451-500 M 576-590 N 648-780 87. ‡Kvb †gŠ‡ji GKwU cigvYyi †hvRbx ¯Í‡ii `ywU AiweUv‡ji B‡jKUªb web¨vm n‡jv .....3d104s1 | †gŠjwUi chv©q mviwY‡Z Ae¯’vb n‡e †KvbwU? K 3q chv©q MÖæc IA L 3q chv©q MÖæc IIB M 4_© chv©q MÖæc IA N 4_© chv©q MÖæc IB 88. ‡h‡Kv‡bv Dckw³¯Í‡i m‡ev©”P B‡jKUªb aviY ÿgZvK 2n2 L (2ℓ+1) M 2(ℓ+1) N 2(2ℓ+1) 89. ‰Re †hŠ‡Mi c„_KKxiY I we‡kva‡bi c×wZ †KvbwU? K Aby‡cÖl cvZb L DaŸ©cvZb M †µvgv‡UvMÖvwd N ivmvqwbK cÖYvwj 90. 2p AiweUv‡ji n Ges Gi gvb KZ? K n = 3, ℓ = 1 L n = 2, ℓ = 1 M n = 1, ℓ = 2 N n = 2, ℓ = 0

| 91. A (`ªve¨Zv 25), B (`ªve¨Zv 62) Ges C (`ªve¨Zv 12) wewkó 3wU KwVb c`v‡_©i wgkÖY †_‡K Dcv`vb¸‡jv‡K Kxfv‡e c„_K Kiv hvq? K `ªveK wb®‹vkb L †Kjvmb M AvswkK †Kjvmb N AvswkK cvZb 92. ‡Kvb `ywU ci¯úi AvB‡mvevi? K Cl, Si 32 14 35 17 L Pb, Hg 204 80 204 82 M C, N 14 7 14 6 N O, O 14 8 16 8 93. `ywU AvB‡mv‡Uv‡ci g‡a¨ Kx †`Lv hvq? K cvigvYweK msL¨v GKB L cvigvYweK fi msL¨v mgvb M wbDUªb msL¨v mgvb N chv©q mviwY‡Z GKB Ae¯’vb 94. Cr Gi B‡jKUªb web¨vm †KvbwU? K C 14 6 L O 12 8 M O 14 8 N †Kvb cwieZ©b bq 95. `ywU †gŠ‡ji cigvYyi ewnt¯Í‡i B‡jKUªbxq KvVv‡gv ns2 np1 Ges ns2 np4 n‡j †Kvb †gŠjwU chv©q mviwYi †Kvb MÖæ‡c Aew¯’Z? K MÖæc-I, MÖæc-VI L MÖæc-III, MÖæc-VIII M MÖæc-III, MÖæc-O N MÖæc-I, MÖæc-O 96. fvix cvwb Kx? K H2O L D2O M H2O2 N D”P Nb‡Z¡i LwbR cvwb 97. Awa‡kvl‡bi gvÎv Ges mPj `kvq `ªve¨Zv nv‡ii wfbœZv _vK‡j †Kvb wgkÖ‡Yi Dcv`vb¸‡jv‡K †Kvb c×wZ‡Z ci¯úi †_‡K c„_K Kiv hvq? K `ªveK wb®‹vkb L †µv‡g‡UvMÖvwd M AvswkK †Kjvmb N AvswkK cvZb 98. gw¯Í‡®‹i wUDgvi wbY©‡q mev©waK e¨eüZ nq †Kvb c×wZ? K IR L UV M MRI N NIR 99. nvB‡Wªv‡Rb eYv©wj n‡”QK wewKiY eYv©wj L †kvlY eYv©wj M K¤úb eYv©wj N wbDwK¬q †Pi¤^K AbyiY eY©vwj 100. Na Gi wkLv cixÿvq KZ Zi½ ˆ`N¨© eYv©wj cvIqv hvq? K 616nm L 590 nm M 578 nm N 690 nm 101. wb‡Pi †Kvb mgxKiYwU mwVK bq? K 1 L c M E = N E 102. Aat‡ÿc‡bi Rb¨ kZ© †KvbwU? K ki ks L ks ki M ks = ki N †KvbwUB bq 103. 3d AiweUv‡ji †ejvq n I ℓ Gi gvb †KvbwU n‡e? K n = 3, ℓ = 0 L n = 3, ℓ = 1 M n = 2, ℓ = 3 N n = 3, ℓ = 2 104. cigvYyi e¨vm wb‡Pi †KvbwUi KvQvKvwQ nq? K 110–10cm L 110–13 cm M 110–8 cm N 110–5 cm 105. we`y¨r Py¤^Kxq wewKi‡Yi mev©waK Zi½‰`N¨© cwimi wb‡Pi †KvbwU‡Z? K UV-iwk¥ L X-ray M Ae‡jvwnZ iwk¥ N †Uwjwfkb Zi½ 106. wnwjqvg cigvYyi eYv©wj wb‡Pi †KvbwUi mv‡_ m`„k n‡e? K H L Li+ M He+ N Na 107. ‡Kvb cigvYy †_‡K GKwU B‡jKUªb mwi‡q wb‡j †h Avqb m„wó nq, Zv n‡jvK abvZ¥K PvR©hy³ K¨vUvqb L FYvZ¥K PvR©hy³ A¨vbvqb M FYvZ¥K PvR©hy³ K¨vUvqb N GKK abvZ¥K PvR©hy³ K¨vUvqb 108. cvigvYweK MVb KvVv‡gv Abymv‡i, GKwU cigvbyi †Kvb GKwU Aiwe‡Ui B‡jKUªb aviY ÿgZv m‡ev©”PK wecixZ w¯úbhy³ `ywU L 32wU M 2n2 (GLv‡b n = cÖavb †Kvqv›Uvg msL¨v) N `ywU 109. GKwU wbi‡cÿ †gŠj Y Gi B‡jKUªb web¨vm nj 1s2 2s2 2p6 3s1 | Bnv †hvR¨Zv kw³¯Í‡i B‡jKUªb MÖnY ev eR©b K‡i KZ Pv‡R©i Avqb ˆZwi K‡i? K –2 L –1 M +1 N +2 110. ‡bmjvi `ªeY I NH3 mn‡hv‡M ev`vwg Aat‡ÿ‡ci ms‡KZ n‡jvK NH4Cl.HgI2 L HgI2 M Cu2[Fe(CN)6] N NH2[Hg2I3] 111. (n + ℓ) Gi wbqgvbyhvqx cUvwmqv‡gi †kl B‡jKUªbwU cÖ‡ek Ki‡eK 3d AiweUv‡j L 3s AiweUv‡j M 4d AiweUv‡j N 4s AiweUv‡j 112. mvj‡dU Avq‡bi kbv³Ki‡Yi Rb¨ †Kvb weKviKwU e¨eüZ nq? K wmjfvi bvB‡UªU L †ewiqvg bvB‡UªU M A¨v‡gvwbqvi A·v‡jU N jNy nvB‡Wªv‡K¬vwiK GwmW

| 113. MRI cÖhyw³ e¨envi K‡i ------ Kiv hvq? K ‡ivM wbY©q L Rvj UvKv kbv³ M Rvj cvm‡cvU© N †ivM Dckg 114. GKwU AiweUv‡ji †PŠ¤^Kxq †Kvqv›Uvg msL¨v Øviv cÖKvwkZ nq? K AiweUv‡ji kw³¯Íi L AiweUv‡ji AvK…wZ M AiweUv‡ji ¯’vwbK Awfweb¨vm N AiweUv‡ji B‡jKUªb w¯úb 115. wb¤œZi kw³¯Íi †_‡K B‡jKUª‡bi D”Pkw³¯Í‡i DcbxZ nIqvi cÖv°v‡jK kw³ †kvwlZ nq L kw³ wbM©Z nq M wbiew”Qbœ eYv©wji m„wó nq N cigvYy AvqwbZ nq 116. B‡jKUªb hLb D”PZi kw³¯Íi †_‡K wb¤œZi kw³¯Í‡i AebwgZ nq, ZLbK ‰ewkó¨g~jK eYv©wj‡iLvi D™¢e N‡U L cigvYy †_‡K Zv‡ci D`MxiY N‡U M B‡jKUªb, wbDUªb KZ…©K AvKwl©Z nq N †kvlY eYv©wj †iLvi m„wó nq 117. wkLv cixÿvq wb‡Pi †Kvb Avqb D¾¡j †mvbvwj njy` e‡Y©i wkLv ˆZwi K‡i? K Na+ L K + M Ca+ N Al3+ 118. atom k‡ãi A_© Kx? K wefvR¨ L AwefvR¨ M e„nr N ÿz`ª 119. cÖ‡Z¨K cigvYy‡Z FYvZ¥K PvR©wewkó KwYKv we`¨gvb| --- †Kvb weÁvbx G wm×v‡šÍ DcwbZ nb? K ‡W‡gvwµUvm L iv`vi‡dvW© M _gmb N †evi 120. ÒcigvYy we`y¨r wbi‡cÿÓ †Kvb cigvYy g‡W‡ji ¯^xKvh©? K ‡evi cigvYy g‡Wj L iv`vi‡dv‡W©i cigvYy g‡Wj M †evi-mgviwdì cigvYy g‡Wj N _gmb cigvYywWs g‡Wj 121. ‡Kvb cigvYy g‡W‡ji wbDwK¬qv‡mi aviYv †`Iqv n‡q‡Q? K Zi½ ejwe`¨v L †evi-cigvYy g‡Wj M †evi-mgviwdì N iv`vi‡dvW© 122. ‡Kvb wewKi‡Yi kw³i mv‡_ Zi½‰`‡N¨©i m¤úK© wK? K e¨¯ÍvbycvwZK L e‡M©i mgvbycvwZK M mivmwi mgvbycvwZK N e‡M©i e¨v¯ÍvbycvwZK 123. cøv¼ aªæe‡Ki gvb KZ? K 6.62610–27 Js–1 L 6.22610–27 kJs–1 M 6.62610–27 kJs–1 N 6.22610–30 kJs–1 124. wb‡Pi †Kvb cigvYy ev Avq‡bi eYv©wji e¨vL¨v ‡evi cigvYy g‡Wj w`‡Z cv‡i bv? K Li+ L He+ M Li2+ N H 125. Kÿc_ wfwËK †Kvqv›Uvg msL¨v KqwU? K 4wU L 3wU M 2wU N 1wU 126. ‡Kvb cigvYyi L †k‡ji Rb¨ †KŠwYK fi‡eM KZ n‡e? K h mvr L r h mv M 2 h mvr N 2 h mv 127. -------- g‡Z cigvYy‡Z B‡j±ª‡bi AveZ©‡bi Rb¨ cÖwZwU cÖavb kw³¯Íi wbw`©ó msL¨K Dckw³¯Í‡i wef³ _v‡K? K ‡evi L mgviwdì M iv`vi‡dvW© N †¯ªvwWÄvi 128. n = 4, ℓ = 0, 1 n‡j Dckw³¯Íi KqwU? K 4wU L 3wU M 1wU N 2wU 129. 4f Dckw³¯Í‡i mev©waK KqwU B‡jKUªb _vK‡Z cv‡i? K 14wU L 7wU M 3wU N 5wU 130. n = 3, ℓ = 2 Ges 2 1 s n‡j 3d Dckw³¯Í‡i B‡j±ªb msL¨v KZ? K 2wU L 6wU M 1wU N 10wU 131. 4_© kw³¯Í‡i Aby‡gvw`Z †gvU Awe©Uvj msL¨v KZ? K 14wU L 16wU M 7wU N 18wU 132. wb‡Pi †Kvb AiweUv‡ji kw³ me‡P‡q Kg? K 4s L 3d M 4d N 5s 133. wb‡Pi †Kvb B‡jKUªb web¨vmwU mwVK? K K(19) - [Ar] 3d1 L Sc(21) - [Ar] 3d3 M Y(39) - [Kr] 4d1 5s2 N Cr (24) - [Ar] 3d4 4s2 134. s AiweUv‡ji AvK…wZ wKiƒc? K ‡MvjvKvi L eZz©jvKvi M Wv‡¤^j AvK…wZi N Wvej Wv‡¤^j 135. m = –1 Gi Rb¨ wb‡Pi †Kvb AiweUvjwU cvIqv hvq? K 2 2 x y d L dxy

| M dzx N 2 z d 136. ‡Kvb †gŠ‡ji B‡j±ªb web¨v‡m AvDdevD wbq‡gi e¨wZµg †`Lv hvq? K Cu L Y M La N V 137. wb‡Pi †KvbwU me‡P‡q w¯’wZkxj? K np3 L nd4 M nf14 N nd10 138. `„k¨gvb Av‡jvi Zi½‰`N¨© KZ? K 380-700Å L 3800-7000Å M 380 nm N 700 nm 139. ‡Kvb iwk¥i Zi½‰`N¨© me‡P‡q Kg? K gnvRvMwZK L Ae‡jvwnZ M Mvgv N iÄb iwk¥ 140. ‡iwWI †Uwjwfkb Zi½-‰`N¨© KZ? K 2.2105 nm L 2.2104 nm M 2.2105 nm N 700 nm 141. ‡Kvb iwk¥i wewKiY me‡P‡q kw³kvjx? K ‡e¸Yx L AwZ‡e¸Yx M gnvRvMwZK N Mvgv 142. ‡Kvb MÖæ‡c AvKl©Y ej †ewk `ye©j? K – OH L C = C M – NH2 N K I L 143. Zwor Pz¤^Kxq eYv©wj‡Z Zwor †ÿÎ I Pz¤^K †ÿ‡Îi ga¨eZ©x †Kv‡Yi gvb KZ? K 180 L 90 M 120 N 150 144. ℓ = 3 Gi Rb¨ cvigvYweK eYv©wj‡Z KqwU m~² †iLv cvIqv hv‡e? K 7wU L 9wU M 4wU N 3wU 145. -------- msiwÿZ nvB‡Wªv‡Rb M¨v‡mi †fZi -------- †fv‡ë‡Ri we`y¨r Pvjbv Ki‡j M¨v‡mi †fZi †Mvjvcx e‡Y©i Avfv †`Lv hvq? K D”PPv‡c, wb¤œ L wb¤œPv‡c, D”P M D”PPv‡c, D”P N wb¤œPv‡c, wb¤œ 146. eªv‡KU wmwi‡Ri Rb¨ cÖwZ ‡mw›UwgUv‡i Zi½ msL¨v KZ? hLb, n2 = 7 K 4616.54 L 461.65 M 46115 N 416.45 147. ‡Kvb A‡j evgvi wmwi‡Ri DrcwË nq? K AwZ‡e¸Yx L `„k¨gvb M Ae‡jvwnZ N Mvgv 148. Rvj UvKv kbv³Ki‡Y †Kvb iwk¥ e¨eüZ nq? K AwZ‡e¸bx L Aejvj M iÄb N gnvRvMwZK 149. UV-ray KZ Zi½ ˆ`‡N¨©i eYv©wj wewKib K‡i? K 200-375 nm L 400-780 nm M 175-300 nm N 480-700 nm 150. Zvi‡K †Kvb Gwm‡W w¯‹Z Kiv nq? K jNy HCl L Mvp H2SO4 M Mvp HCl N jNy H2SO4 151. Ba avZz wkLv cixÿvq wK eY© †`Lvq? K meyR L Av‡cj meyR M †mvbvjx njy` N njy`vf meyR 152. Cu2+ wkLv cixÿvq wKiƒc eY© cÖ`k©b K‡i? K meyR L bxjvf meyR M jvj N njy` 153. UV-Ray cÖ‡ÿcY Kivi ci Avmj UvKv AÜKv‡i mwi‡q †Kvb Av‡jvi we”QziY †`Lv hvq? K mv`v L jvj M †e¸bx N bxj 154. gvbe‡`‡n ¯^vfvweK wecvK wµqvi d‡j Drcbœ Zvc wK iwk¥ wn‡m‡e wewKwiZ nq? K Ae‡jvwnZ L AwZ‡e¸Yx M gnvRvMwZK N iÄb 155. mvbevb© Gi wPwKrmvq †Kvb iwk¥ cÖ‡ÿc Kiv nq? K IR L Mvgv M UV N iÄb 156. Mvg Bbd¬v‡gkb I cÖvšÍxq jwmKvi wPwKrmvq †Kvb iwk¥ e¨eüZ nq? K Mvgv L Ae‡jvwnZ M X-ray N AwZ‡e¸Yx 157. CH CH Cl 3 2 a b ‡Kvb ai‡bi H G †iwWI iwk¥ †ewk cwigv‡Y †kvwlZ n‡e? K a L b M †kvwlZ n‡e bv N mgfv‡e †kvwlZ n‡e 158. ‡cÖvU‡bi kw³ †kvlY I wewKi‡Yi ga¨eZx© mgqKvj‡K wK e‡j? K AbyiYbKvj L e¨wßKvj M ¯^w¯ÍKvj N MgbKvj 159. ‡PŠ¤^K‡ÿ‡Îi AvKl©‡Y †cÖvU‡bi gyg~ly© jvwU‡gi gZ N~Y©b‡K wK e‡j? K N~Y©b MwZ L †jgi MwZ M AveZ©b MwZ N †PŠ¤^Kxq N~Y©b 160. 1kg `ªve‡K m‡ev©”P 10gm `ªe `ªexf~Z _vK‡j `ªve¨Zv KZ? K 3 L 1 M 10 N 2 161. wbw`©ó ZvcgvÎvq AgCl Gi `ªve¨Zv ¸Ydj 6.61010| hLb, Ag+ Gi NbgvÎv 0.2M Ges Cl– Gi NbgvÎv

| 0.3M| GKB ZvcgvÎvq Ag+ I Cl– Gi NbgvÎv h_vµ‡g 0.1M Ges 0.4M Kiv n‡j wb‡¤œv³ mgxKiY Abymv‡i Gi `ªve¨Zvi ¸Ydj wnmve Ki| [AgCl] [Ag ][Cl ] K K 3.731010 L 7.461010 M 5.61010 N 2.481010 162. wb‡Pi †Kvb †ÿ‡Î mgAvqb cÖfve NU‡e? K NaCl, KOH L NH4Cl, NH4OH M KCl, NaOH N CaCl2, NH4 163. MÖæc II Gi †ÿ‡Î avZe mvjdvBW Aat‡ÿc cixÿvq HCl Gi NbgvÎv KZ _v‡K? K 0.03 L 0.02M M 0.03M N 0.01M 164. wb‡Pi †Kvb avZe mvjdvBW me‡P‡q c‡i Aatwÿß n‡e? K CoS L HgS M CdS N PbS 165. wb‡Pi †KvbwU †cvjvi `ªveK? K NH3 L CCl4 M HNO3N SO2 166. MÖæc II Gi mvj‡dUmg~‡ni K¨vUvqb I A¨vbvq‡bi Avavb 2 nIqv ‡KvbwU nq? K j¨vwUm kw³ Kg L nvB‡Wªkb kw³ †ewk M nvB‡Wªkb kw³ †gvUvgywU N j¨vwUk kw³ †ewk 167. cvwb‡Z `ªve¨Zvi µg wn‡m‡e †KvbwU mwVK? K Be(OH)2 Ca(OH)2 L MgSO4SrSO4 M BaSO4SrSO4 N Ca(OH)2Mg(OH)2 168. wb‡Pi †Kvb avZzi nvB‡Wªv·vBW cvwb‡Z `ªeYxq bq? K NaOH L Fe(OH)2 M KOH N CH3 – OH 169. ‡KvbwU `ªexf~Z nIqvi mgq †Zgb Zvc †kvlY K‡i bv? K KCl L Na2SO4 M NaCl N KNO3 170. Na2SO4 Gi cwie„Ë ZvcgvÎv KZ? K 32C L 31C M 35C N 30C 171. K4[Fe(CN)6] ‡hŠ‡M Avqi‡bi †hvRbx KZ? K –2 L +3 M +2 N +4 172. ‡KvbwU cÖæwkqvb eøy? K KFe[Fe(CN)6](s) L K3Fe[Fe(CN)6] M K3[Fe(CN)2] N Fe[Fe(CN)6] 173. ‡KvbwU kbv³Ki‡Y †bmjvi `ªeY e¨eüZ nq? K NH4Cl L KCl M Na2SO4 N CaCl2 174. ZnSO4 kbv³Ki‡Y †KvbwU e¨eüZ n‡q _v‡K? K Be(NO3)2 L KNO3 M Ba(NO3)2 N NH4(NO3) 175. Pz‡bi †Nvjv‡U cvwb Øviv wK‡mi wbwðZKiY cixÿv Kiv nq? K 2 CO3 L NH4 M Cl– N 2 SO4 176. ‡KvbwU A‰Re `ªveK? K HCl L †ebwRb M CS2 N CHCl3 177. NaCl Gi †Kjv‡mi AvK…wZK e¯‘‡Kw›`ªK L cvk¦©‡Kw›`ªK M mij NbK N PzZz¯ÍjKxq 178. ‡Kjv‡mi IRb 10gm, Aweï× Lv`¨ je‡Yi IRb 100gm n‡j †Kjv‡mi Drcv`b gvÎvK 1gm L 20gm M 2 gm N 10gm 179. cvZ‡bi †ÿ‡Î `yB Zi‡ji ùzUbv‡¼i e¨eavb KZ n‡Z n‡e? K 40C Gi Kg L 35C Gi †ewk M 40C Gi †ewk N 35C Gi Kg 180. A¨vwbwj‡bi we‡kvab †Kvb c×wZ‡Z Kiv nq? K ev®úcvZb L AvswkK cvZb M cvZb N DaŸ©cvZb 181. ‡KvbwU DØvqx c`v_© bq? K Kc~©i L Av‡qvwWb M †eb‡RvwqK GwmW N CaCl2 182. wb‡Pi †KvbwU wbiæ`K? K CaCl2 L CO2 M HSO4 N Na2CO3 183. ‡µvgv‡UvMÖvwd cÖwµqvwU KqwU gva¨‡gi mvnv‡h¨ N‡U? K wZbwU L `yBwU M GKwU N 5wU 184. ‡cvjvwiwUi µg wn‡m‡e †KvbwU mwVK? K NH2 OH L C = C Cl M OH NH2 N NH2 CHO 185. Zij-KwVb †µvgv‡UvMÖvwdi w¯’i `kv †KvbwU? K KwVb L M¨vmxq M Zij N Aa©Zij 186. Zij-Zij †µvgv‡UvMÖvwdi w¯’i/mPj `kv †KvbwU? K Zij L KwVb M M¨vmxq N Aa©Zij

| Aa¨vq 03t ‡gŠ‡ji chv©qe„Ë ag© I ivmvqwbK eÜb 1. ‡KvbwU mg‡hvRx †hŠM? K CsCl L FrCl M BeCl2 N HBr 2. [Cu(NH3)4]Cl2 ‡hŠMwU‡Z Cu Gi mwbœ‡ek msL¨v KZ? K 3 L 4 M 5 N 2 3. H2S Gi nvB‡Wªv‡Rb eÜb KZ ZvcgvÎvq fv‡½? K 4 C L 10 C M 50 C N 100 C 4. ‡hŠMw¯’Z †gŠj mg~‡ni Zwor FYvZœKZvi cv_©K¨ KZ n‡j †hŠMwU‡Z †giæ _vK‡e? K 0.5-1.7 L 1-2.1 M 2.5-3 N 3.1-3.5 5. H2O I I2 Gi g‡a¨ †Kvb cÖKvi AvšÍtwµqv we`¨vgvb? K WvB‡cvj-Avweó WvB‡cvj L Avweó WvB‡cvj-Avweó WvB‡cvj M cwjgvi-cwjgvi eÜb N cwjgvi-g‡bvgvi eÜb 6. ‡KvbwU cvwb‡Z A`ªeYxq? K C6H12O6 L C12H22O11 M SiO2 N NaCl 7. ‡dwiK cvi‡K¬v‡iU Gi ms‡KZ †KvbwU? K Fe(ClO4)3 L Fe(ClO3)2 M Fe(ClO3)3 N Fe(Cl2O4)2 8. ‡Kvb †gŠ‡ji cigvYy †hvR¨Zv¯Í‡i ns2 np5 B‡jKUªb web¨vm _vK‡j H †gŠ‡ji Ae¯’vb chv©q mviwY‡Z †Kv‡bv MÖæ‡c n‡e? K 15(5A) L 15(5B) M 15(7A) N 2(2A) 9. PviwU n¨v‡jv‡R‡bi B‡jKUªb Avmw³i gvb (kJ/mol) wb¤œiæc; G‡`i g‡a¨ †KvbwUi A¨vbvqb MV‡bi cÖeYZv †ewk n‡e? K F (–238) L Br(-325) M Cl(-349) N I(-295) 10. wb‡Pi †Kvb Avq‡bi AvKvi me‡P‡q †QvU n‡e? K F – L O 2– M N 3- N Na+ 11. chv©q mviwYi †Kvb MÖæ‡ci †gŠj¸‡jv Zxeª RviK? MÖæ K MÖæc-1 L MÖæc-2 M MÖæc-17 N MÖæc-16 12. wb‡Pi †Kvb AvqbwUi A¨vbvqb‡K AwaK †cvjvwiZ Ki‡Z cvi‡e? K N 3- L Mg2+ M Al3+ N Fe3+ 13. P I S Gi A·vBW `ywU cvwbi mv‡_ wewµqvq GwmW Drcbœ K‡i †KvbwU? K H3PO3 I H2SO4 L H3PO4 I H2SO4 M H3PO4 I H2SO4 N H3PO2 I H2SO 14. Cl Gi A·vBW NaOH I Ca(OH)2 Gi mv‡_ c„_K wewµqvq Drcbœ jeY n‡jvK NaClO4 I CaClO4 L Na2ClO4 I CaClO4 M NaClO4 I Ca(ClO4)2 N NaClO3 I Ca(ClO3)2 15. ‡Kv‡bv †gŠ‡ji cigvYyi †hvR¨Zv B‡jKUªb ns2 np6 n‡j GwUi MÖæc msL¨v n‡e †KvbwU? K 8(8A) L 18(8A) M 6(6B) N 8(8A) 16. wb‡¤œv³ B‡jKUªb web¨v‡mi cigvYyi †KvbwUi cvigvYweK e¨vmv©a me‡P‡q eo n‡e? K 1s2 2s1 L 1s2 2s2 M 1s2 2s2 2p1 N 2s2 2p2 17. wb‡Pi AYy¸‡jvi †KvbwU‡Z eÜb `~iZ¡ me‡P‡q Kg? K H2 L N2 M O2 N F2 18. ‡Kvb AiweUvjwU KLbI cvB ( ) eÜb MV‡b Ask †bq bv? K s- AiweUvj L p- AiweUvj M d- AiweUvj N f- AiweUvj 19. POCl3 MVbKv‡j †K›`ªxq cigvYyi †Kvb cÖKvi msKiY N‡U? K sp L sp2 M sp3 N sp3 d 20. B‡jKUªb Avmw³i gvb Cl = –361 kJ mol-1 , Br=–340 kJ mol-1 , I = –380 kJ mol-1 ‡Kvb ‡gŠjwUi FYvZœK Avqb MV‡bi cÖeYZv mev©waK? K Br L I M Cl N Cl Ges Br 21. C, H, O, N Ges S Gi Zwor FYvZ¥KZv h_vµ‡g 2.5, 2.1, 3.5, 3.0 Ges 2.5| wb‡Pi †Kvb eÜb me‡P‡q †cvjvi? K C–H L N–H M S–H N O–H 22. ‡KvbwU‡Z eÜb †KvY me‡P‡q eo? K H2O L SO2 M NH3 N CH4

| 23. ei‡di GKwU AYy‡Z KqwU nvB‡Wªv‡Rb eÜb we`¨gvb? K 1 L 2 M 3 N 4 24. Fe(26) ‡gŠjwU †Kvb eø‡Ki AšÍ©MZ? K s L p M d N f 25. M–2e M+2 MVb Ki‡j M avZz †KvbwU? K ÿvi avZz L g„rÿvi avZz M Ae¯’všÍi avZz N AavZz 26. M+ H M++e– ; GLv‡b H ‡KvbwU? K B‡jKUªb Avmw³ L AvqwbKiY kw³ M Zwor FYvZœK N Zwor abvZœK 27. F Gi B‡jKUªb Avmw³ KZ? K -333kJ/mol L -348kJ/mol M -350kJ/mol N -390kJ/mol 28. Cl Gi B‡jKUªb Avmw³ F ‡_‡K †ewk Gi KviY †KvbwU? K F Gi cvigvYweK fi L Cl Gi 2q ¯Í‡ii B‡jKUª‡bi NbZ¡ M F Gi AvKvi N Cl Gi AvKvi 29. GKwU †gŠ‡ji cvigvYweK msL¨v 35 ‡gŠjwUi Ae¯’vb †Kvb eø‡K? K s- eøK L p-eøK M d- eøK N f- eøK 30. A Gi Zwor FYvZœKZv 0.9 Ges B Gi Zwor FYvZœKZv 3.0| †gŠj A Ges B Gi g‡a¨ MwVZ †hŠ‡Mi eÜb Kx ai‡bi? K AvqwbK L mg‡hvRx M mwbœ‡ek N avZe eÜb 31. wb‡Pi †Kvb †gŠjwUi A·vBW me‡P‡q ÿvixq? K Na L Cs M Mg N Sr 32. wb‡Pi †Kvb †gŠjwUi B‡jKUªb Avmw³ me‡P‡q †ewk? K F L Cl M O N Br 33. wb‡Pi †Kvb †hŠMwUi eÜb †KvY me‡P‡q †ewk? K wg‡_b L cvwb M A¨v‡gvwbqv N Kve©b WvB-A·vBW 34. H2O ‡hŠ‡M H Ges O e܇b we`¨gvbK s-sp msKi AiweUvj L s-sp2 msKi AiweUvj M s-sp3 msKi AiweUvj N sp- sp3 msKi AiweUvj 35. Cl2O7 cvwbi mv‡_ wewµqv K‡i ˆZwi K‡iK Cl2 L HOCl M HClO4 N HCl 36. Avgiv †h Pzb †L‡q _vwK Zvi ms‡KZK Na2O LMgO M CaCO3 N Ca(OH)2 37. SiO2 Gi Rjxq `ªeYK Dfagx© L A¤øxq M ÿvixq N wbi‡cÿ 38. ‡Kvb †gŠjwUi AvqwbKiY wefe me‡P‡q †ewk? K H L Li M Na N F 39. ‡Kvb MÖæ‡ci †Kv‡bv DcMÖæc †bB? K VIII L III M VII N IV 40. ‡Kvb †kÖYxf~³ †gŠj‡K Pvj‡Kv‡Rb ejv nq? K IA L IIA M VIA N VIIA 41. wb‡¤œi †Kvb †gŠjwU mvaviY ZvcgvÎvq Zij? K ns1 n‡Z ns2 L ns1 n‡Z ns2 np5 M ns2 n‡Z ns2 np5 N ns2 n‡Z ns2 np6 42. wb‡¤œi †Kvb †gŠwjK c`v_© mvaviY ZvcgvÎvq Zij? K Rb L Cs M Cl2 N I2 43. ‡Kvb †hŠMwU mn‡R cvwb‡Z `ªexf~Z n‡e? K XCl2 L YCl3 M XF2 N ZCl4 44. OF2 ‡hŠMwU †Kvb agx©? K cÖkg L A¤øagx© M ÿviagx© N Dfqagx© 45. ‡hŠM¸‡jv‡Z mg‡hvRx ˆewk‡ó¨i mwVK µg †KvbwU? K BeCl2>CaCl2>MgCl2 L BeCl2> MgCl2>CaCl2 M MgCl2>CaCl2 > BeCl2 N CaCl2 MgCl2 BeCl2 46. K4[Fe(CN)6]- Gi eÜb n‡jvK me¸‡jv AvqwbK L me¸‡jv mg‡hvRx M AvqwbK Ges mg‡hvRx N AvqwbK, mg‡hvRx Ges mwbœ‡ek mg‡hvRx 47. A¤øagx© A·vBW †KvbwU? K CO L Al2O3 M pbO2 N B2O3 48. ‡Kvb †hŠMwU odd (we‡Rvo) B‡jKUªb AYy? K CO L CO2 M N2O N NO2 49. ‡Kvb ai‡bi †gŠj cÖwZwbwaZ¡Kvix †gŠj ejv nq?

| K s I d eøK †gŠj L p I s eøK †gŠj M s I f eøK †gŠj N d I f eøK †gŠj 50. wb‡Pi †Kvb †gŠjwUi AvqwbKiY kw³ me‡P‡q †ewk? K Na L As M S N Cl 51. Sr ‡Kvb ai‡bi avZz? K ÿvixq L g„rÿvixq M A¤øxq N wbi‡cÿ 52. Xe- Gi cvigvYweK msL¨v 54 Gi A_© Kx? K †cÖvUb msL¨v 54 L B‡jKUªb msL¨v 54 M wbDUªb msL¨v 54 N fimsL¨v 54 53. wb‡Pi †Kvb MÖæ‡ci †gŠjmg~n Ae¯’všÍi †gŠj? K Sc, Fe, Cu, Cr L Fe, Co, Ni, Zn M Cr, Mn, Fe, Cu N Sc, Cr, Fe, Zn 54. ‡KvbwU AvqwbKiY wef‡ei mwVK µg? K Be>B>N>O L Be>B> O > N M N>O>B>Be N N>O>Be>N 55. ‡Kvb Avq‡bi AvKvi ÿz`ªZg? K Na+ L Mg2+ M Al3+ N Ne 56. ‡Kvb †d¬vivBW me‡P‡q †ewk AvqwbK? K NaF L CsF M MgF2 N BaF2 57. ‡Kvb †gŠ‡ji †Rvo¸wj `ªæZ wewµqv K‡i? K Li+Br2 L Li+Cl2 M K+Br2 N K+Cl2 58. chv©q mviwYi †gŠjmg~n‡K B‡jKUªb web¨v‡mi Dci wfwË K‡i KZ cÖKv‡i wef³ Kiv nq? K 1 L 2 M 3 N 4 59. ‡KvbwU chv©q mviwYi †gŠjmg~‡ni cÖKvi‡f` bq? K wbw®Œq M¨vm L cÖwZwbwaZ¡ †gŠj M d-eøK †gŠj N Ae¯’všÍi †gŠj 60. chv©q mviwYi k~b¨ MÖæ‡c †KvbwU Aew¯’Z ? K ÿvi avZz L n¨v‡jv‡Rb M g„rÿvi avZz N †bv‡ej M¨vm 61. ‡bv‡ej M¨vm mg~‡ni ewnt¯’ ¯Í‡ii B‡jKUªb web¨vm †KvbwU? K (n-1)d2 ns2 L ns2 np6 M ns2 N ns1 62. cÖwZwbwaZ¡ †gŠjmg~n †Kvb MÖæ‡ci m`m¨? K A DcMÖæc L B DcMÖæc M MÖæc VIII N k~b¨ MÖæc 63. s I p eøK †gŠjmg~n †Kvb MÖæ‡ci m`m¨? K A DcMÖæc L B DcMÖæc M MÖæc VIII N k~b¨ MÖæc 64. ‡Kvb †gŠ‡ji ewnt¯’ B‡jKUªb web¨vm ns1 ? K ÿvi avZz L g„rÿvi avZz M p- eøK N Ae¯’všÍi avZz 65. Ca I Mg Kx cÖK…wZi avZz? K ÿvi L g„rÿvi M Ae¯’všÍi N gy`ªv 66. ‡Kvb †gŠ‡ji ewnt¯’ B‡jKUªb web¨vm ns2 ? K gy`ªv avZz L g„rÿvi M ÿvi avZz N wbw®Œq ‡gŠj 67. Cl (17) ‡Kvb eø‡Ki †gŠj? K s L p M d N f 68. chv©q mviwYi MÖæc IIIA n‡Z VIIA ‡gŠj¸‡jv †Kvb eø‡Ki AšÍ©MZ? K s L p M d N f 69. ‡Kvb †gŠ‡ji ewnt¯’ kw³¯Í‡ii B‡jKUªb web¨vm ns2 np5 ? K s- eøK †gŠj L d-eøK †gŠj M n¨v‡jv‡Rb N g„rÿvi avZz 70. Fe(26) ‡gŠjwU †Kvb eø‡Ki AšÍ©MZ? K s L p M d N f 71. ÔBÕ DcMÖæ‡ci †gŠjmg~n †Kvb eø‡Ki AšÍ©MZ? K s L p M d N f 72. d-eøK †gŠjmg‡ni wmwiR KqwU? K 2 L 3 M 4 N 5 73. d-eøK †gŠ‡ji wmwi‡Ri cÖKvi‡f` bq †KvbwU? K 2d L 3d M 4d N 5d 74. d-eøK †gŠjmg~‡ni cÖK„wZ Kxiæc? K avZz L AavZz M ÿvi avZz N wbw®Œq 75. d-eøK †gŠjmg~‡ni mv‡_ m¤ú©wKZ ˆewkó¨ †KvbwU? K Giv RviYagx© L Gi weRviYagx© M G‡`i A·vBW A¤øxq N Giv mevB Ae¯’všÍi avZz 76. ÔGiv weRviYagx©Õ cwieZb©kxj †hvRbx cÖ`k©b K‡i Ges RwUj †hŠM MVb K‡iÕ- K_vwU cÖ‡hvR¨ †Kvb eø‡Ki †gŠj m¤ú©‡K? K s L p M d N f

| 77. ‡Kvb †gŠ‡ji w¯’wZkxj Avq‡b d AiweUvj B‡jKUªb Øviv Ac~Y© _v‡K? K s-eøK †gŠj L f-eøK †gŠj M Ae¯’všÍi avZz N AvšÍ: Ae¯’všÍi avZz 78. ÔSc’ avZzwU †Kvb eøK Gi ‡gŠj? K p L s M d N f 79. weij g„wËKv avZzmg~n †Kvb¸‡jv? K j¨vš’vbvBW wmwiR L A¨vKwUbvBW wmwiR M MÖæc VIII N gy`ªv avZz 80. AvaywbK chv©q mviwYi ÎæwU †KvbwU? K MÖæc IA L MÖæc VIIA M j¨vš’vbvBW I A¨vw±bvBW N wbw®Œq M¨vm 81. d-eøK †gŠjmg~‡ni †KvbwU‡Z 4s AiweUv‡j 1wU B‡jKUªb i‡q‡Q? K Mn(25) L Fe(26) M Ni(28) N Cu(29) 82. ‡Kvb †gŠj ivmvqvwbKfv‡e Aw·‡R‡bi Abyiæc? K Mg L Na M S N Cl 83. kw³¯Í‡i s 2 p 6 B‡jKUªb web¨vmwewkó †gŠjmg~n‡K Kx e‡j? K cÖwZiæcx †gŠj L Ae¯’všÍi †gŠj M AvšÍ;Ae¯’všÍi †gŠj N wbw®Œq M¨vm 84. n¨v‡jv‡R‡bi †ÿ‡Î wb‡¤œi †Kvb mvaviY B‡jKUªb web¨vmwU cÖ‡hvR¨? K ns2 np3 L ns2 np4 M ns2 np5 N ns2 np6 (n-1)d6 85. s 2 p 5 KvVv‡gvi †gŠj¸‡jv Kx bv‡g cwiwPZ? K wbw®Œq M¨vm L g„wËKv avZz M n¨v‡jv‡Rb N ÿvi avZz 86. ‡Kvb †gŠj¸‡jv GKB MÖæ‡ci AšÍ©fz³? K Li, Na, K L Fe, Co, Ni M Cu, Ag, Fe N C, N, O 87. cUvwmqvg †Kvb †kÖwYi AšÍ©fz³ ? K n¨v‡jv‡Rb L weij M¨vm M ÿvi avZz N ÿvi g„wËKv avZz 88. ‡gŠjmg~‡ni ag© cÖavbZ †KvbwUi Dci wbf©i K‡i? K †Kvb †kÖwY‡Z Aew¯’Z L †Kvb chv©‡q Aew¯’Z M e – web¨v‡mi Dci N AvYweK f‡ii Dci 89. MÖæc-IB I MÖæc- IIB Gi †gŠjmg~n Kx bv‡g cwiwPZ? K ÿvi avZz L g„rÿvi avZz M s-eøK †gŠj N d-eøK †gŠj 90. hv‡`i ewnt¯’ B‡jKUªb s AiweUv‡j Zv‡`i Kx ‡gŠj ejv nq? K s eøK L p eøK M d eøK N f eøK 91. Li, Na, K G¸‡jv Kx avZz bv‡g cwiwPZ? K g„ÿvi avZz L ÿvi avZz M weij g„wËKv N AcavZz 92. ‡Kvb avZz¸‡jv‡K Ae¯’všÍi †gŠj ejv nq? K hv‡`i d AiweUvj c~Y© L hv‡`i d AiweUvj Ac~Y© M hv‡`i f AiweUvj Ac~Y© N hv‡`i s AiweUvj c~Y© 93. ‡Kvb †gŠj¸‡jv A¨vw±bvBW wmwiR bv‡g cwiwPZ? K j¨vš’vbvg n‡Z jy‡Uwmqvg L †mvwWqvg n‡Z g¨vM‡bwmqvg M †ewiqvg n‡Z ÷ªbwmqvg N A¨vw±wbqvg n‡Z j‡ibwmqvg 94. f- eøK †gŠj¸‡jv‡K Kx ejv nq? K Av`©k avZz L Ae¯’všÍi avZz M AvšÍtAe¯’všÍi avZz N g„rÿvixq avZz 95. p eøK †gŠj ejv nq †Kvb¸‡jv‡K? K IA, IIA MÖæ‡ci †gŠjmg~n L IIIA, IVA, VA, VIA, VIIA Ges 0 MÖæ‡ci †gŠjmg~n M B MÖæc I VIIA MÖæ‡ci †gŠjmg~n N A¨vKwUbvBW wmwi‡Ri †gŠjmg~n 96. Mn, Fe, Co, Ni, Cu ‡gŠjmg~n‡K ejv nq? K Ae¯’všÍi avZz L cÖwZwbwaZ¡ †gŠj M ÿvi avZz N j¨vš’vbvBW 97. Zn ‡Kvb eø‡Ki †gŠj? K s-eøK L P eøK M d- eøK N f eøK 98. d- eø‡K KZwU †gŠj i‡q‡Q? K 30 L 34 M 40 N 29 99. ‡Kvb †gŠjwU p eø‡Ki AšÍM©Z? K Li L Cu M P N Ca 100. ‡KvbwU p eøK †gŠj? K Na L Si M Ca N Fe 101. s eø‡K KqwU †gŠj? K 14 L 27

| M 30 N 40 102. ‡Kvb B‡jKUªb web¨vmwU mwVK? K Kr(36) = 1s2 2s2 2p6 3s2 3p6 3d104s1 4p5 L Ca++ = 1s2 2s2 2p6 3s2 3p6 4s1 M Sc(21) = 1s2 2s2 2p6 3s2 3p6 4s2 4p1 N Zn++ = 1s2 2s2 2p6 3s2 3p6 3d10 103. GKwU †gŠj hvi cigvYyi †kl B‡jKUªb d AiweUv‡j hvq, Zv‡`i Kx e‡j? K s eøK †gŠj L p eøK †gŠj M d eøK †gŠj N f eøK †gŠj 104. chv©q mviwYi †Kvb MÖæ‡c g„rÿvixq avZzi Ae¯’vb? K MÖæc IA L MÖæc IIA M MÖæc IIIB N MÖæc IIIA 105. ‡Kv‡bv †gŠ‡ji B‡jKUªb web¨vm wb¤œiƒc: [Ar]3d104s1 | GwU wb‡¤œi †Kvb †kÖwYi AšÍ©fz³? K n¨v‡jv‡Rb L ÿvi avZz M Ae¯’všÍi avZz N wbw®Œq M¨vm 106. GKwU †gŠ‡ji cvigvYweK msL¨v 29| †gŠjwU †Kvb eø‡Ki AšÍ©fz³| K s- eøK L p-eøK M d-eøK N f-eøK 107. chv©q mviwYi GKB chv©‡qi AšÍ©fz³ †gŠ‡ji D`vniY †Kvb¸‡jv? K Na, Mg, Al L H, N, Cl M P, S, K N C, N, O 108. ‡mvwWqvg †gŠjwU chv©q mviwYi †Kvb chv©q Av‡Q| K 1g chv©q L wØZxq chv©q M Z…Zxq chv©q N PZz_© chv©q 109. GKwU †gŠ‡ji me©ewnt¯Í‡ii AvUwU B‡jKUªb Av‡Q| chvq© mviwY‡Z Zvi Ae¯’vb †Kv_vq? K VIII A MÖæ‡c L VIII B MÖæ‡c M I MÖæ‡c N 0 MÖæ‡c 110. dmdivm ‡gŠjwU chv©q mviwYi †Kvb chv©‡q Ges †Kvb MÖy‡c Av‡Q? K 3q chv©q Ges 5g MÖæ‡c L 5g chv©q Ges 3q MÖæ‡c M 3q chv©q Ges 2q MÖæ‡c N 5g chv©q Ges 2q MÖæ‡c 111. MÖæc VA- ‡Z AšÍ©fz³ †gŠj¸‡jv Kx Kx? K bvB‡Uªv‡Rb, dmdivm, Av‡m©wbK, A¨vw›Ugwb, wemgv_ L bvB‡Uªv‡Rb, Aw·‡Rb, dmdivm, Av‡m©wbK, wemgv_ M Aw·‡Rb, mvjdvi, †m‡jwbqvg, †Ujywiqvg, A¨vw›Ugwb N Aw·‡Rb, dmdivm, †Ujywiqvg, †cv‡jvwbqvg 112. chv©q mviwYi IIB MÖæ‡ci †gŠjmg~n Kx Kx? K Cu, Ag, Au L Na, K, Li M Ni, Co, Fe N Zn, Cd, Hg 113. ‡Kvb †gŠ‡ji B‡jKUªbxq web¨vm n‡jv 2, 8, 1| chv©q mviwY‡Z Gi Ae¯’vbK MÖæc I chv©q 3 L MÖæc IV chv©q 1 M MÖæc I chv©q 4 N MÖæc IV chvq© 3 114. GKwU †gŠ‡ji B‡jKUªbxq web¨vm 2, 8, 18, 8, 2 chv©q mviwY‡Z Zvi Ae¯’vb †Kv_vq? K 4_© chv©‡q, IIA †kÖwY‡Z L 5g chv©‡q, IIA †kÖwY‡Z M 3q chv©‡q, IA †kÖwY‡Z N 5g chv©‡q, VIA †kÖwY‡Z 115. Al †Kvb †gŠ‡ji mv‡_ m¤úK©hy³? K Li L Be M C N B 116. chv©q mviwY‡Z †KvbwU †gŠ‡ji chv©q wbav©iY K‡i? K gyL¨ †Kvqv›Uvg msL¨v L m‡ev©”P cÖavb †Kvqv›Uvg msL¨v M ewnt¯’ ¯Í‡i B‡jKUªb msL¨v N mnKvix †Kvqv›Uvg msL¨v 117. chv©q mviwY‡Z †Kv‡bv MÖy‡c †gŠ‡ji Ae¯’vb, Zv wb‡Pi †KvbwU Øviv wb‡`©wkZ nq? K cigvYyi ewnt¯’ ¯Í‡i B‡jKUª‡bi msL¨v Øviv L cigvYyi ewnt¯’ ¯Í‡ii gyL¨ †Kvqv›Uvg msL¨v Øviv M cigvYy‡Z we`¨gvb †gvU B‡jKUªb msL¨v Øviv N gyL¨ I mnKvix ‡Kvqv›Uvg msL¨v mgwó (n+ℓ) Øviv 118. ‡Kvb ‡gŠ‡ji †hvRbx B‡jKUªb msL¨v hZ H ‡gŠ‡ji Ae¯’vb ZZ b¤^i MÖy‡c; 69, 70, 71 †gŠjmg~‡ni Ae¯’vb chv©q mviwYi †Kvb MÖy‡c? K IIB L IIIB M IIB, IIIB, IVB N IVB 119. ‡h †gŠ‡ji cvigvYweK msL¨v 11, chv©q mviwY‡Z Zvi Ae¯’vb †Kv_vq? K 2q chv©q L 3q chv©q M 4_© chv©q N 5g chv©q 120. ‡h †gŠ‡ji cvigvYweK msL¨v 17 chv©q mviwY‡Z Zvi Ae¯’vb †Kv_vq? K wØZxq chv©q 6ô MÖyc L Z…Zxq chv©q 5g MÖyc M Z…Zxq chv©q 7g MÖyc N Z„Zxq chv©q 4_© MÖyc 121. 21 cvigvYweK msL¨v wewkó GKwU cigvYy †h †kÖwY‡Z _vK‡e Zv †Kvb †gŠjmg~n? K ÿvixq avZzmg~n L Ae¯’všÍi avZz M wbw¯Œq M¨vmmg~n N n¨v‡jv‡Rbmg~n

| 122. 24 cvigvYweK msL¨v wewkó †gŠjwUi Ae¯’vb chv©q mviwYi †Kvb chv©‡q? K 4_© L 3q M 2q N 1g 123. P- Gi cvigvYweK msL¨v nj 15, †gŠjwU chv©q mviwYi †Kvb chv©‡qi AšÍ©fz³? K 3q L 5g M 2q N 1g 124. wØZxq chv©‡qi Ges MÖæc 14(IVA)- Gi AšÍ©fz³ GKwU †gŠ‡ji cigvYy wb¤œZg kw³ Ae¯’vq i‡q‡Q| cigvYywUi †hvR¨Zv ¯Í‡i B‡jKUª‡bi msL¨v KZwU? K 1 L 2 M 3 N 4 125. †KvbwU chv©qe„Ë ag© bq? K MjbvsK L ùzUbvsK M B‡jKUªb N AvqwbK ag© 126. MÖyc VIIA G hZ wb‡Pi w`‡K hvIqv hvq Zvi MjbvsK I ùzUbvsK evovi KviY †KvbwU? K avZe eÜb Abycw¯’Z L AvšÍtAvYweK AvK©lY ej †bB M AvKvi e„w× N cvigvYweK e¨vmva© e„w× 127. †h †Kvb chv©‡q MjbvsK I ùzUbvs‡Ki cwieZ©b †KvbwU? K wbqwgZ L AwbqwgZ M ev‡o N K‡g 128. GKB chv©‡q †gŠj mg~‡ni MjbvsK I ùzUbvs‡Ki †Kv‡bv wbqwgZ cwieZb© †`Lv hvq bv †Kb? K MVb GKB L MVb wfbœ M Giv wbw®Œq N Giv ÿvi avZz 129. Na, Mg, Al Gi †gŠjmg~‡ni g‡a¨ †Kvb cÖKvi eÜb we`¨gvb? K avZe eÜb L AavZe eÜb M AvqwbK N mg‡hvRx 130. dmdiv‡mi GKwU AYyi ms‡KZ †KvbwU? K P L P2 M P3 N P4 131. mvjdv‡ii GKwU AYyi ms‡KZ †KvbwU? K S4 L S6 M S8 N S10 132. S8 I P4 AYyi g‡a¨ †Kvb cÖKvi ej we`¨gvb? K AvqwbK L mg‡hvRx M f¨vÛviIqvjm N avZe 133. d I eøK †gŠ‡ji cvigvYweK msL¨v e„w×i mv‡_ G‡`i AvKv‡ii Kxiƒc cwieZ©b nq? K ev‡o L K‡g M w¯’i _v‡K N AwbqwgZ 134. j¨vš’vbvBW ms‡KvPb †Kvb †gŠj؇qi †ÿ‡Î cÖ‡hvR¨? K Sc, Zn L Na, K M F, Cl N Ne, Ar 135. MÖyc IA G me‡P‡q kw³kvjx †gŠj †KvbwU? K Na L K M Cs N Fr 136. wbw®Œq M¨vm¸‡jvi AvqwbKiY kw³ gvb Kxiƒc? K Lye wb¤œ L Lye D”P M ¯^vfvweK N k~Y¨ 137. †Kvb cigvYywU mn‡RB GKwU B‡jKUªb Z¨vM K‡i? K K L Ca M Rb N Sr 138. ‡KvbwU †gŠjwU mn‡RB +2 Avqb MVb Ki‡e? K Aw·‡Rb L †mvwWqvg M K¨vjwmqvg N A¨vjywgwbqvg 139. Z…Zxq chv©‡qi †Kvb †gŠjwU mev©waK AvqwbKiY kw³ wewkó? K GKwU wbw®Œq M¨vm L GKwU n¨v‡jv‡Rb M GKwU ÿvi avZz N GKwU g„rÿvixq avZz 140. †Kvb †gŠjwUi †ÿ‡Î AvqbxKiY kw³ me©wb¤œ? K Na L Li M K N Rb 141. ‡KvbwU ‡gŠjwUi †ÿ‡Î AvqwbKiY kw³ mev©waK? K Be L B M C N N 142. ‡Kvb †gŠ‡ji avZe ‰ewkó¨ mev©waK? K Si L Sn M Ge N Pb 143. ‡KvbwUi AvqwbK kw³ me‡P‡q Kg? K N L Be M B N C 144. †KvbwUi AvqwbKiY kw³ me‡P‡q Kg? K Na L Ci M K N Cs 145. †Kvb †gŠjwUi cÖ_g AvqwbKiY kw³ me©wb¤œ? K Ne L Ar M Kr N Xe 146. †Kvb †gŠjwUi AvqwbKiY wefe me©wb¤œ? K Na L Al M S N Ar 147. †Kvb †gŠjwUi cÖ_g AvqwbKiY kw³ mev©waK ? K Be L C

| M N N O 148. ‡KvbwUi B‡jKUªb Avmw³ mev©waK? K O L S M Se N Te 149. g„ÿvixq avZzi †ÿ‡Î MÖy‡ci Dci †_‡K wb‡P wb‡gv³ ag©¸‡jvi †KvbwUi n«vm N‡U? K cvigvYweK e¨vmva© L cÖ_g AvqwbKiY kw³ M AvqwbK e¨vmva© N cvigvYweK AvqZb 150. †Kvb ‡kÖwYi †ÿ‡Î AvqwbK kw³ me©wb¤œ? K n¨v‡jv‡Rb L wbw®Œq M¨vm M ÿvixq avZz N ÿviKxq g„wËKv avZz 151. †KvbwUi 1g AvqbxKiY kw³i gvb †ewk? K N L O M F N C 152. K cigvYyi 1g AvqbxKiY kw³ gvb KZ? K 520 kJ/mol L 1320 kJ/mol M 418 kJ/mol N 495 kJ/mol 153. cÖ_g AvqwbKiY kw³i µg? K B<Be<C<O<N L Be<B<C<N<O M B<Be<C<N<O N Be<B<C<O<N 154. C, N, O Ges F- Gi wØZxq AvqwbKiY kw³i mwVK µg †KvbwU? K C>N>O>F L O>N>F>C M O>F>N>C N F>O>N>C 155. PviwU †gŠ‡ji B‡jKUªb web¨vm †`Iqv n‡jv| †KvbwUi cÖ_g AvqwbKiY kw³ m‡ev©”P? K 1s2 2s2 2p3 L 1s2 2s2 2p4 M 1s2 2s2 2p6 3s1 N 1s2 2s2 2p6 3s2 3p3 156. chv©qµwgK AvqbxKiY kw³, (†hgb, cÖ_g, wØZxq, Z…Zxq BZ¨vw`) cigvYyi †kj KvVv‡gvi cÖgvY cÖ`vb K‡i| wmwjKb cigvYyi †ÿ‡Î †Kvb AvqvwbKiY kw³, c~e©eZx© AvqwbKiY kw³ †_‡K A¯^vfvweK ‡ewk? K wØZxq L Z…Zxq M PZy©_ N cÂg 157. Al- Gi †ÿ‡Î IE1, IE2 Ges IE3 Gi gvb h_vµ‡g 579, 1814 Ges 2740 kJmol-1 wb‡Pi †Kvb e³e¨wU mwVK? K Al(g) Al3+ (g); cÖ‡qvRbxq kw³i cwigvY 5133 KJmol-1 L Al(g) Al3+ (g); cÖ‡qvRbxq kw³i cwigvY2740 KJmol-1 M Al(s)Al3+ (g); cÖ‡qvRbxq kw³i cwigvY1814 KJmol-1 N Al(s) Al3+ (g); cÖ‡qvRbxq kw³i cwigvY 5133 KJmol-1 158. ‡KvbwU IE1 Gi mwVK µg? K Ne>F>O>NC>B L Ne>F>O>N>C>B M Ne>F>O>N>C>B N Ne<F<O<N<C<B 159. cigvYyi ewnt¯’¯Íi †_‡K B‡jKUªb AcmviY Ki‡Z †h kw³i cÖ‡qvRb nq Zv‡K Kx e‡j? K cvigvYweK kw³ L eÜb kw³ M wefe kw³ N AvqwbKiY kw³ 160. me© cÖ_g Zwor FYvZ¥KZvi aviYv †`qv nq? K 1930 L 1932 M 1960 N 19822 161. H Gi Zwor FYvZ¥KZv 2.1 n‡j F Gi Zwor FYvZ¥KZv KZ? K 2.1 L 2.1 M ≥ 2.1 N ≤ 2.1 162. Zwor FYvZ¥KZvi cv_©K¨ Lye †ewk n‡j †Kvb cÖKvi eÜb ˆZwi nq? K AvqwbK L mg‡hvRx M mwbœ‡ek N nvB‡Wªv‡Rb 163. `y‡Uv †gŠ‡ji g‡a¨ Zwor FYvZ¥KZvi cv_©K¨ _vK‡j Zv‡`i †kqvi K…Z B‡jKUªb¸‡jv Kxfv‡e _vK‡e? K mgvb fv‡e †kqvi Ki‡e L AwaK Zwor FYvZ¥KZvi Kv‡Q _vK‡e M Kg FYvZ¥KZvi wbK‡U _vK‡e N AwaK abvZ¥KZvi wbK‡U _vK‡e 164. ‡Kv‡bv MÖæ‡c Dci n‡Z wb‡P †KvbwU e„w× cvq? K avZe ag© L Zwor FYvZ¥KZv M AavZe ag© N AvqwbKiY kw³ 165. `y‡Uv †gŠ‡j mvgvb¨ Zwor FYvZ¥KZvi cv_©K¨ _vK‡j †hŠMwUi ˆewkó¨ Kxiƒc? K 100% mg‡hvRx L 100% AvqwbK M AvswkK mg‡hvRx N AvswkK AvqwbK 166. MÖæc 16(VIA) Gi †gŠjmg~‡ni g‡a¨ †KvbwUi B‡jKUªb MÖn‡Yi cÖeYZv mev©waK? K Te L S M Se N O 167. GKB kZv©ejx‡Z MÖæc VIIA †gŠjmg~‡ni †KvbwUi B‡jKUªb MÖn‡Yi cÖeYZv me‡P‡q Kg? K ‡d¬vwib L Av‡qvwWb M †eªvwgb N †K¬vwib

| 168. ‡d¬vwi‡bi GKwU cigvYy Aw·‡R‡bi GKwU cigvYy †_‡K ÿz`ªZi| Gi GKwU m¤¢ve¨ e¨vL¨v n‡jv- Aw·‡R‡bi Zzjbvq †d¬vwi‡bi i‡q‡QK ÿz`ªZi RviY msL¨v L ÿz`ªZi cvigvYweK msL¨v M D”PZi wbDwK¬qvi PvR© N AwaKZi AhyM¥ B‡jKUªb 169. p AiweUv‡ji AvK…wZ Kxiƒc? K e„ËvKvi L NbKvKvi M Wv‡¤^jvKvi N †MvjKvKvi 170. d- AiweUv‡ji AvK…wZ Kxiƒc? K Wv‡¤^jvKvi L e„ËvKvi M Wvej-Wv‡¤^jvKvi N †MvjKvKvi 171. + AwaµgY N‡U‡Q Kxfv‡e? K s Ges p AiweUv‡ji mvgbvmvgwb AwaµgY L s Ges p AiweUv‡ji cvkvcvwk AwaµgY M s Ges s AiweUv‡ji cvkvcvwk AwaµgY N s Ges d AiweUv‡ji mvgbvmvgwb AwaµgY 172. + AwaµgY N‡U‡Q wKfv‡e? K p I p AiweUv‡ji cvkvcvwk AwaµgY L p I s AiweUv‡ji gy‡LvgywL AwaµgY M p I d AiweUv‡ji gy‡LvgywL AwaµgY N p I p AiweUv‡ji mvgbvmvgwb AwaµgY 173. + AwaµgY N‡U‡Q wKfv‡e? K p I Gi cvkvcvwk AwaµgY L p I s Gi gy‡LvgywL AwaµgY M p I p Gi cvkvcvwk AwaµgY N p I p Gi gy‡LvgywL AwaµgY 174. ‡KvbwU Am¤ú„³ †hŠM? K NH3 L HCN M CH4 N BF3 175. ‡Kvb mg‡hvRx hyMj m¤ú„³? K NH3, CO2 L CH4, SO2 MBF3, H2O N HCN, SO3 176. mg‡hvRx eÜb KZ cÖKvi? K 2 L 3 M 4 N 5 177. mg‡hvRx eÜb m¤úwK©Z gZev` KqwU? K 2 L 3 M 4 N 5 178. N2 †Z N–N ci¯úi KZwU eÜb Øviv hy³ n‡e? K 1 L 2 M 3 N 4 179. Kve©‡bi m¤ú„³ †hŠ‡M Kve©‡bi †Kvb msKiYwU we`¨gvb? K sp L sp2 M sp3 N sp3 d 180. wØeÜb hy³ Am¤ú„³ ˆRe †hŠ‡M Kve©‡bi †Kvb msKiYwU we`¨gvb? K sp L sp2 M sp3 N sp3 d 181. wÎeÜb hy³ Am¤ú„³ ˆRe †hŠ‡M Kve©‡bi †Kvb msKiYwU we`¨gvb? K sp3 d L sp3 M sp2 N sp 182. ‡Kvb †hŠMwU‡Z Kve©b cigvYyi sp2 msKiY i‡q‡Q? K C6H6 L C8H15Cl3 M C8H14Cl2 N C8H17Cl 183. ‡Kvb AiweUv‡ji w`K`kx© ag© Av‡Q? K 1s L 2s M 2p N 3s 184. y z AiweUv‡ji bvg Kx? K Px L Py M Pz N 2 2 x y d 185. HCl AYy‡Z †Kvb eÜbwU we`¨gvb? K s-p eÜb L p-p eÜb M s-p eÜb N p-p eÜb 186. F2 AYy‡Z †Kvb bond we`¨gvb? K s-p bond L p-p bond M s-p bond N p-p bond 187. ‡Kvb †hŠMwU‡Z bond Av‡Q? K C2H4 L C2H6 M C3H8 N C4H10 188. ‡Kvb †gŠjwUi me©wb¤œ †hvRbx `yB? K Cl L C M H N Na 189. nvBweªWvw‡Rkb gZev` Dc¯’vcb K‡i †Kvb weÁvbx?

| K cwjs L ûÛ M ev‡R©wjqvm N Dnjvi 190. Kve©‡bi †Kvb msKiYwU m¤¢e? K sp3 d L sp2 d M spd N sp 191. H – C – H eÜb †KvY 10928 †Kvb †hŠ‡Mi? K CH4 L C2H2 M C2H4 N C3H6 192. CH4 AYy‡Z KqwU bond Av‡Q? K 2wU L 3wU M 4wU N 5wU 193. C2H4 AYy‡Z C – H eÜbmg~n wb‡Pi †Kvb AiweUvj؇qi Awaµg‡Yi d‡j MwVZ n‡q‡Q? K C(sp) + H(2s) L C(sp2 ) + H(1s) M C(sp2 ) + H(2s) N C(sp3 ) + H(1s) 194. Kve©‡bi AiweUv‡j msKixKiY KZ ai‡bi? K 2 L 3 M 4 N 5 195. sp3 AiweUv‡ji msKixKiY KZ ai‡bi? K mgZjxq w·KvbvKvi L mij‰iwLK M PZz¯ÍjKxq N AóKZjxq 196. B‡_‡b C – C eÜb ˆ`N¨© KZ? K 0.106 nm L 0.110 nm M 0.134 nm N 0.154 nm 197. cÖwc‡b C=C eÜb ˆ`N¨© KZ? K 0.106 nm L 0.110 nm M 0.134 nm N 0.154 nm 198. A¨vwmwUwj‡b C C eÜb ˆ`N¨© KZ? K 0.106 nm L 0.110 nm M 0.120 nm N 0.134 nm 199. Bw_‡bi AvKvi Kxiƒc? K mij‰iwLK L mgZjxq UªvB‡Mvbvj M PZz¯ÍjKxq N Uªv‡Mvbvj 200. ‡ebwRbPµ Avwe®‹vi K‡ib †K? K ‡MvKzj L †KKzj M eKzj N ivDwj 201. ‡ebwR‡b C = C `~iZ¡ KZ? K 0.154 nm L 0.133 nm M 0.139 nm N 0.109 nm 202. ‡ebwR‡b †Kvb ai‡bi msKiY N‡U? K sp L sp2 M sp3 N dp2 s 203. GKB kw³¯Í‡ii 1wU s I 2wU p AiweUvj msKwiZ n‡q Kx ai‡bi AiweUvj ˆZwi Ki‡e? K sp L sp3 M sp2 N dsp2 204. CH4 G Kve©b cigvYyi Kx ai‡bi nvBweªWvB‡Rkb nq? K sp L sp2 M sp3 N dsp2 205. ‡KvbwU‡Z sp3 nvBweªWvB‡Rkb n‡q‡Q? K HCN L C2H2 M BF3 N NH4 206. sp3 msKwiZ †hŠ‡Mi AYyi AvK…wZ Kx ai‡bi N‡U? K PZz¯ÍjKxq L mij‰iwLK M mgZjxq wÎfzRvK…wZi N †ejbvK…wZi 207. ‡Kvb †hŠM hyM‡j sp3 nvBweªWvB‡Rkb n‡q‡Q? K PCl5, NCl3 L CH4, H2O M NH3, BCl3 N C2H4, C2H2 208. CH4 G AYy‡Z C cigvYyi gy³‡Rvo B‡jKUªb KZ¸‡jv? K 1 L 4 M 2 N ‡bB 209. NCl3 AYy‡Z N cigvYyi eÜb †Rvo B‡jKUªb KZ¸‡jv? K 1 L 2 M 3 N 4 210. H2O-i AYy‡Z eÜb‡Rvo B‡jKUªb 2 †Rvov I gy³‡Rvo B‡jKUªb 2 †Rvov| H2O †Z O cigvYyi msKi AiweUvj KZ¸‡jv? K 1 L 2 M 3 N 4 211. NH4 I [B(NH3)]F3 ‡hŠ‡M N Gi †Kvb ai‡bi msKivqb N‡U‡Q? K dsp2 L sp2 M sp3 N sp 212. MÖvdvB‡Ui Mjbv¼ KZ? K 3730C L 3230C M 3030C N 3330C 213. ‡KvbwU cvwb‡Z AwaK `ªeYxq? K BeSO4 L MgSO4 M CaSO4 N SrSO4 214. wb‡Pi †Kvb †hŠMwU †mwg †gvjvi? K Zwor †hvRx †hŠM L mg‡hvRx †hŠM M avZe †hŠM N mwbœ‡ek †hŠM 215. wb‡Pi †Kvb †hŠMwU cvwb‡Z A`ªeYxq? K FIF3 L AgCl M CaCl2 N AgF 216. wb‡Pi †Kvb †gŠjwUi B‡jKUªb Avmw³ mev©waK? K Al L P M S N Si 217. wb‡Pi †KvbwU wbi‡cÿ? K N2O L N2O3

| M N2O4 N O2F3 218. wb‡¤œi †gŠjmg~‡ni †Kvb †mUwU‡Z mev©waK a‡g©i wgj i‡q‡Q? K P, As, Sb L Na, K, Mg M O, S, Sb N C, P, N 219. wb‡Pi †KvbwU †d‡ivg¨vM‡bwUK? K Sc L Co M Zn N Al 220. Kve©b cigvYy‡Z KZ cÖKvi msKiY N‡U? K 2 L 3 M 4 N 5 221. ‡KvbwUi mwµqZv mev©waK? K F L Cl M Br N I 222. H2O AYyi eÜb †KvY n‡jvK 107C L 109.5C M 120C N 104.5C 223. [Cu(NH3)4]SO4 †hŠ‡M KZ ai‡bi eÜb we`¨gvb? K 1 L 2 M 3 N 4 224. wb‡Pi †KvbwUi AvK…wZ V Gi gZ? K SO2 L CO2 M PO2 N SO3 225. ‡KvbwUi †cvjvivqb ÿgZv †ewk? K Ba2+ L Sr2+ M Mg2+ N Be2+ 226. wb‡Pi †Kvb †hŠ‡M †cvjvi mg‡hvRx eÜb we`¨gvb? K MgF2 L CO2 M NaCl N HCl 227. OF2 Kx ai‡bi †hŠM? K A¤øagx© L ÿviagx© M cÖkg N Dfagx© 228. gy`ªv avZyi MÖæc bv‡g cwiwPZ †KvbwU? K IA L IB M IIA N IIB 229. wb‡Pi †Kvb †hŠMwU A¯^vfvweK ùzUbvs‡Ki cwieZ©b †b‡e? K HF L HCl M HBr N HI 230. 20A GKwU †gŠj| wb‡Pi †Kvb jeYwU cvwb‡Z `ªeYxq? K ASO4 L A(NO3)2 M AC2O4 N ACO3 231. Zwor FYvZ¥KZvi gvb KZ n‡j †hŠMwU †cvjvi n‡e? K 0.4 L 0.5-1.7 M 2.5 N 3.0 232. Zwor FYvZ¥KZvi mwVµ µg †KvbwU? K F Cl O N L F Cl N O M F O N Cl N Cl F O N 233. wb‡Pi †Kvb jeYwU †ewk DØvqx? K Na2SO4 L NaNO3 M CuCO3 N NaCl 234. wb‡Pi †Kvb †hŠMwUi Mjbv¼ me‡P‡q †ewk? K BeCl2 L MgCl2 M CuCl2 N AlCl3 235. wb‡¤œi †Kvb †hŠMwUi Mjbv¼ me©wb¤œ? K H2S L H2O M TeH2 N SeH2 236. Bw_‡b e܇bi msL¨v n‡jvK 1 L 2 M 5 N 6 237. ÿviK‡Z¡i wb¤œ n«vm †KvbwU? K F –Cl–I –Br– L I –Br–Cl–F – M F –Cl–Br–I – N F –I –Br–Cl– 238. GKwU †gŠj x Gi B‡jKUªb web¨vm n‡jv 1s2 2s2 2p6 3s2 3p1 , Bnvi †hvR¨Zv ¯Í‡i B‡jKUªb MÖnY ev eR©‡bi d‡j KZ Pv‡R©i Avqb MwVZ n‡e? K –3 L +3 M –2 N +3 239. VSEPR ZË¡ Abymv‡i †hvR¨Zv ¯Í‡i QqwU msKi AiweUvj _vK‡j AYyi AvK…wZ n‡eK PZz¯ÍjKxq L wÎfzR AvK…wZ M AóZjKxq N wØ-wcivwgW 240. B_vB‡b wmMgv e܇bi msL¨v KZwU? K 2 L 3 M 4 N 5 241. [Ar] 3d104s1 B‡jKUªb web¨v‡mi †gŠjwU wb‡Pi †Kvb †kÖwYi? K ÿviavZz L Ae¯’všÍi avZz M ÿvixq g„wËKv avZz N AšÍtAe¯’všÍi avZz 242. wb‡Pi †gŠj¸‡jvi g‡a¨ †KvbwUi AvqwbKiY kw³ m‡ev©”P? K O L N M F N C 243. ‡ebwRb cÖ‡Z¨KwU Kve©‡b wK ai‡bi msKiY nq? K sp2 L sp3 M d 2 sp3 N dsp2 244. ‡Kvb¸‡jv AcavZz? K Si, Ge, As L Na, K, Ca M F, Cl, Br N B, Mg, Ni 245. MCl2 I MCl3 ¯’vqx †hŠM n‡j M n‡eK ÿvi avZz L g„rÿvi avZz M Ae¯’všÍi avZz N d-block ‡gŠj 246. NH4 Avq‡bi AvK…wZ Kxiƒc?

| K PZz¯ÍjKxq L w·KvYwgZxq M w·KvYxq N wcivwgWxq 247. wb‡Pi †Kvb †gŠ‡ji AvqwbKiY wefe mev©waK? K Na L Al M P N Ar 248. FeCl3 ms‡KZavix †hŠMwUi bvg n‡jvK UªvB‡K¬v‡iv Avqib L †dwiK A·vBW M Avqib UªvB‡K¬vivBW N †divm A·vBW 249. ‡Kvb AvqwbK †hŠ‡M mg‡hvRx PwiÎ AwaK we`¨gvb? K KCl L LiCl M NaCl N RuCl 250. Avwe®‹…Z †gŠ‡ji g‡a¨ chv©q mviwY‡Z Zij †gŠj KqwU? K 2 L 3 M 4 N 5 251. B_vBb AYy‡Z cvB e܇bi msL¨v KqwU? K 2 L 3 M 4 N 5 252. K¨vUvqbmg~‡ni †cvjvivq‡bi `ÿZvi mwVK µg †KvbwU? K L M N L L M N M K N M N K M N 253. CaCl2 Ges AlCl3 Gi g‡a¨ †KvbwU AwaK mg‡hvRx? K CaCl2> AlCl2 L AlCl2 >CaCl2 M DfqB AvqwbK N DfqB mg‡hvRx 254. mwbœ‡ek eÜb Dcw¯’Z ‡Kvb †ÿ‡Î? K H2O L NH3 M NH4 N K4[Fe(CN)6] 255. GKwU †gŠ‡ji cvigvYweK msL¨v 35 ‡gŠjwUi Ae¯’vb †Kvb eø‡K? K s- eøK L p-eøK M d- eøK N f- eøK 256. A Gi Zwor FYvZœKZv 0.9 Ges B Gi Zwor FYvZœKZv 3.0| †gŠj A Ges B Gi g‡a¨ MwVZ †hŠ‡Mi eÜb Kx ai‡bi? K AvqwbK L mg‡hvRx M mwbœ‡ek N avZe eÜb 257. PviwU n¨v‡jv‡R‡bi B‡jKUªb Avmw³i gvb (kJ/mol) wb¤œiæc; G‡`i g‡a¨ †KvbwUi A¨vbvqb MV‡bi cÖeYZv †ewk n‡e? K F (–238) L Br(-325) M Cl(-349) N I(-295) 258. wb‡Pi AYy¸‡jvi †KvbwU‡Z eÜb `~iZ¡ me‡P‡q Kg? K H2 L N2 M O2 N F2 259. POCl3 MVbKv‡j †K›`ªxq cigvYyi †Kvb cÖKvi msKiY N‡U? K sp L sp2 M sp3 N sp3 d 260. wb‡Pi †Kvb †hŠMwUi eÜb †KvY me‡P‡q †ewk? K wg‡_b L cvwb M A¨v‡gvwbqv N Kve©b WvB-A·vBW 261. H2O ‡hŠ‡M H Ges O e܇b we`¨gvbK s-sp msKi AiweUvj L s-sp2 msKi AiweUvj M s-sp3 msKi AiweUvj N sp- sp3 msKi AiweUvj 262. Avgiv †h Pzb †L‡q _vwK Zvi ms‡KZK Na2O LMgO M CaCO3 N Ca(OH)2 263. sp2 msKi AiweUv‡ji AvK…wZ wKiƒc nq? K mij ˆiwLK L wÎfzR AvK…wZi M PZz¯ÍjKxq N w·KvYvKvi wcivwgWxq 264. A¤øagx© A·vBW †KvbwU? K CO L Al2O3 M pbO2 N B2O3 265. ‡Kvb ivmvqwbK eÜb m„wó‡Z GKwU cigvYy KZ…„K B‡jKUªb hyMj cÖ`Ë nq A_P Dfq cigvby B‡jKUªbØq †kqvi K‡i| K AvqwbK eÜb L avZe eÜb M mg‡hvRx eÜb N mwbœ‡ek mg‡hvRx eÜb

| Aa¨vq 04t ivmvqwbK cwieZ©b 1. g¨v·I‡q‡ji AYyi MwZi weZi‡Yi †ÿ‡Î †Kvb Dw³wU mwVK bq? A. Most probable speed is the speed of all of the molecules B. Most probable speed decreases as temperature increases C. Larger numbers of molecules move at a greater speed at high temperature D. Distribution curve tells the number of molecules moving at a certain speed Soln :B 2. A + 2B D wewµqvi †ÿ‡Î wewµqvi nvi mgxKiY n‡jv, rate = k[A][B]| hw` Dfq wewµq‡Ki NbgvÎv wظY Kiv nq, Zvn‡j wewµqvi nvi e„w× cv‡eA. 2 times B. 4 times C. 6 times D. 8 times [Ans: B] 3. GKwU cÖ_g µg wewµqvi nvi aªæeK 6.710–4 s –1| wewµqvwUi Aa©vqyKvj KZ? A. 17.2 min B. 16.0 min C. 27.5 min D. 18.1 min Soln :A 4. cÖ_g µg wewµqv, A Drcv` Gi †¶‡Î wb‡gœi †jLwPÎmg~n †`Lv‡bv n‡jv| †Kvb †jLwPÎwU Aï×? ([A] = wewµq‡Ki NYgvÎv; t = wewµqvi mgq) A. B. C. D. Soln :B 5. wb‡gœi PviwU wewµqvi cix¶vjä †eM mgxKiY †`qv nj| †Kvb wewµqvwU †gŠwjK wewµqv n‡Z cv‡i? A. A + B P, V = k[A]2 B. C + D P, V = k[C] [D]2 C. O + O2 + N2 O3+N2, V = k[O] [O2] [N2] D. (CH3)3 CCl + OH– (CH3)3C–OH+OH+OH– , V=k [(CH3)3CCl] Soln :C 6. X + Y Z wewµqvi Rb¨ wbw`©ó ZvcgvÎvq wbgœwjwLZ DcvË cvIqv †Mj| wewµqvi mwVK †eM-mgxKiY †KvbwU? [X]0/mol L–1 1.0 1.0 3.0 [Y]0/mol L–1 1.0 2.0 1.0 Avw`‡eM mol L –1 s –1 0.01 0.02 0.01 A. v = k [X] [Y] B. v = k [X] [Y]2 C. v = k [Y] D. v = k [X] Soln :C 7. wewµqvi nvi mgxKi‡Y wewµqK¸wji NYgvÎvi Nv‡Zi mgwó n‡”QA. Molecularity of a reaction B. Half-life of a reaction C. Order of a reaction D. Activation energy of a reaction Soln :C 8. N2O5 Gi Zvc we‡qvRb GKwU cÖ_g µg wewµqv Ges GB wewµqvi nvi aªæeK Gi gvb 6.2 104 s 1 . Gi Aa© Avqy¯‹vj KZ? A.11.18 s B. 111.8 s C. 1118.0 s D. 1.18 min Soln :C 9. N2O5 2NO2 + Bnv GKwU cÖ_g µg wewµqv Ges GB wewµqvi †eM aªye‡Ki gvb 6.210–4 s –1| GB wewµqvi Aa©vqyKvj nj: (00-01) A. 11.8 seconds B. 111.8 seconds C. 1118 seconds D. 1.18 minutes Soln :C 10. GKwU cÖ_g µg wewµqvi Aa©vqy 28 †m‡KÛ| KZ †m‡KÛ c‡i wewµq‡Ki GK Aógvsk Aewkó _vK‡e? A. 28 B. 56 C. 84 D. 112 Soln :C 11. 2NO(g)+O2(g) 2NO2 (g) wewµqvwUi cix¶v K‡i wbYx©Z MwZ mgxKiY, v = k[NO]2 [O2]; [NO] Gi cwigvY Av‡Mi †P‡q wظY Kiv n‡j Avw` †e‡Mi wK cwieZ©b n‡eÑ A. AcwiewZ©Z _vK‡e B. wظY n‡e C. wZb¸Y n‡e D. Pvi¸Y n‡e Soln :D 12. ZvcgvÎv e„w×i mv‡_ wewµqvi †eM e„w×i cÖavb KviYA. †ekx msL¨K wewµqK AYy kw³ AR©b K‡i mwµq nq B. wewµqvi mwµqY kw³ e„w× cvIqv C. wewµqvi mwµqY kw³ n«vm cvIqv D. wewµqv AYymg~‡ni AvšÍ-AvYweK `~iZ¡ n«vm cvIqv Soln :A 13. †Kvb wewµqvi †eM aªæeK k-Gi gvÎv hw` (time)1 nq, Z‡e wewµqvwUi µg n‡eA. cÖ_g µg B. wØZxq µg C. k~b¨ µg D. Z…Zxq µg Soln :A 14. A+B C wewµqvwUi MwZ mgxKiY n‡jv t v = k[A] 2 ; A-Gi cªviw¤¢K NbgvÎv wظY Kiv n‡j wewµqvi cªviw¤¢K MwZ KZ¸Y e„w× cv‡eÑ A. 2 B. 3 C. 4 D. 8 Soln :C 15. wb‡gœi †KvbwU cÖ_g µg wewµqvi Rb¨ mwVK? A. Av‡cw¶K wewµqvi nv‡ii GKK: NbgvÎv–1 mgq–1 †hgb, L mol–1 s –1 B. Av‡cw¶K wewµqvi nvi k = C. t1/2 NbgvÎvi cÖv_wgK gv‡bi Dci wbf©i K‡i bv D. mg‡qi mv‡_ NbgvÎv mij‰iwLKfv‡e e„w× cvq Soln :C 16. bvB‡Uªv‡Rb †c›Uv A·vBW (N2O5) Gi we‡qvR‡bi Aa©vqy 3400 wg.| wewµqvwUi Av‡cw¶K wewµqv nvi K Gi gvb wb‡gœi †KvbwU? A. 1.732510–4 s –1 B. 2.03810–4m–1 dt d[A] [A] [A] In o 2 2 1 O a(a x) x . t 1 [A] t t In[A] [A] t

| C. 2.03810–3 s –1 D. 2.03810–3s –2 Soln :B 17. wb‡gœi †KvbwU FYvZ¥K AbyNUK? A. Cu B. A¨vj‡Kvnj C. MnO2 D. Fe Soln :B 18. †Kvb wewµqvi ZvcgvÎv 25C †_‡K 35C -G DbœxZ Ki‡j H wewµqvi nvi aªæe‡Ki gvb wZb¸Y nq, Z‡e wewµqvwUi mwµqY kw³i gvb wb‡gœi †KvbwU? A. 83.85 kJ mol–1 B. 38.85 kJ mol–2 C. 85.83 kJ mol–1 D. 83.85 kJ mol–1 Soln :A 19. k~b¨ µg wewµqvq wewµqvi nvi _v‡KÑ A. 0 B. aªæe C. ax‡i e„w× cvq D. ax‡i n«vm cvq Soln :B 20. cÖwZ 10C ZvcgvÎv e„w×i Rb¨ wewµqvi nvi KZ¸Y e„w× cvq? A. 2-3 B. 3-4 C. 4-5 D. 5-6 Soln :A 21. k~b¨µg wewµqvq wewµqvi nvi _v‡KA. 0 B. aªæe C. ax‡i e„w× cvq D. ax‡i n«vm cvq Soln :B 22. k~b¨µg wewµqvi nvi aªæe‡Ki GKK n‡jv: A. L mol–1 time–1 B. time–1 C. mol L–1 time–1 D. none Soln :C 23. GKwU A‡Uv AbyNUK n‡”QÑ A. wewµqvi Drcv`¸‡jvi GKwU hv AbyNUK wn‡m‡e KvR K‡i B. hv GKUv wewµqv‡K Avi¤¢ K‡i C. hv GKwU wewµqv‡K MwZ‡eM Kwg‡q †`q D. hv GKwU wewµqvi MwZ‡eM evwo‡q †`q Soln :A 24. wb‡Pi †KvbwU wewµqv nvi aªæeK, K-Gi mwVK cÖKvk? A. K = B. K = C. K = 1 t loge Co Ct D. K = Soln :C 25. cÖ_g µg wewµqv 2N2O5(g) 4NO2(g) + O2(g) Gi Aa©avqyKvj 30C ZvcgvÎvq 2.40 N›Uv| wewµqvwUi nvi aªæeK †KvbwU? A. 0.289 h–1 B. 0.380 h–1 C. 0.20 h–1 D. 0.240 h–1 Soln :A 26. cÖ_g µg wewµqavi Rb¨ wb‡gœi †KvbwUi †iLvwPÎ GKwU mij †iLv Drcbœ Ki‡e?{[A] n‡jv ZxeªZv Ges t n‡jv mgq} A. [A] vs t B. ln [A] vs t C. D. ln t vs [A] Soln :A 27. k~b¨ µg wewµqvi nvi aªæe‡Ki GKK wK? A. s–1 B. mol L–1 s –1 C. L mol–1 s –1 D. mol s–1 Soln :B 28. A + B C wewµqvi MwZ mgxKiY nj: v = k[A]2 ; A Gi Avw` NbgvÎv wظY Kiv n‡j wewµqvi Avw` MwZ KZ¸Y e„w× cv‡e? A. wظY B. wZb¸Y C. Pvi ¸Y D. AvU ¸Y Soln :C 29. 2NO + O2 2NO2 wewµqvwU GKwU A. wÎ-AvYweK wewµqv B. wØ-AvYweK wewµqv C. GK-AvYweK wewµqv D. k~b¨-AvYweK wewµqv E. †KvbwUB bq Soln :A 30. CH3COOC2H5 + H2O CH3COOH + C2H5OH wewµqv GKwUÑ A. k~b¨ µg wewµqv B. cÖ_g µg C. QÙ GK AvYweK wewµqv D. wØZxq µg wewµqv E. Z…Zxq µg wewµqv Soln :C 31. GKwU cÖ_g µg wewµqvi Aa©vqy 30 wgwbU| wewµqvwUi Av‡cw¶K nvi KZ? A.0.02/ wgwbU B. 0.0210-2 / wgwbU C. 2.3110-2 / wgwbU D. 23110-2 / wgwbU E. 23110-5 / wgwbU Soln :C 32. GKwU wØZxq µg wewµqvi Aa©vqzKvj (T1/2) Ges wewµq‡Ki NbgvÎv (c) Gi g‡a¨Kvi m¤úK©wU njA. t1/2 = aªæe B. t1/2 c 2 C. t1/2 D. t1/2 c E. t1/2 Soln :E 33. †Kvb cÖ_g µg wewµqvi Aa©vqy 15 min n‡j wewµqvwUi nvi aªæeK KZ? A. 4.62103 min1 B. 4.62101min1 C. 4.62102 min1 D. 1.63101 min1 Soln :C 34. GKwU cÖ_g µg wewµqvi A‡a©K cwigvY wewµqK we‡qvwRZ nq 360 †m‡K‡Û| wewµqvwUi nvi aªæeK KZ? A. 0.0115 min1 B. 1.155 min1 C. 0.1386 min1 D. 0.1155 min1 Soln :D 35. GKwU cÖ_g µg wewµqvi 30% m¤cbœ 60 wgwb‡U| D³ wewµqvwUi Aa©vqy n‡jvA. 100.50 min B.111.55 min C. 116.55 min D. 100.55 min Soln :C 36. †KvbwUi Aa©vqy (Half-life) me©vwaK? A. Uranium-238 B. Iodine-131 a x a log t 1 a x a t 1 (a x) x log t 1 vst [A] 1 1 c c 1

| C. Cobalt-60 D. Technetium-99 Soln :A 37. WªvB‡m‡j e¨eüZ Zwor we‡køl¨Ñ A. ZnCl2 B. NH4Cl C. H2O D. me¸wj Soln :B 38. ch©vq mviwYi †Kvb GKwU ch©v‡q evg †_‡K Wvb w`‡K cvigvbweK msL¨v e„w×i ms‡M ms‡MÑ A. cigvbyi AvKvi e„w× cvq B. AvqbxKiY kw³ e„w× cvq C. Zwor FYvZ¥KZv n«vm cvq D. B‡jKUªb Avmw³ n«vm cvq Soln :B 39. wewµqK AYy¸‡jv ci¯úi msNl© K‡i hvLb cyiv‡bv eÜb fv‡½ Ges bZzb eÜb m„wó Ki‡Z ïiæ K‡i ZLb H Ae¯’v‡K ejv nq A. wewµqvi µg B. wewµqvi MwZi nvi C. mwµqbK…Z RwUj D. mwµqb kw³ Soln :C 40. WªvB‡m‡j e¨eüZ Zwor we‡køl¨Ñ A. ZnCl2 B. NH4Cl C. H2O D. me¸wj Soln :B 41. †h wewµqvi nvi wewµq‡Ki NbgvÎvi Dci wbf©i K‡i bv A_©vr wewµqvwU GKwU wbw`©ó MwZ‡ZB Pj‡Z _v‡K Zv‡K e‡jA. †gŠwjK wewµqv B. k~b¨ µg wewµqv C. cÖ_g µg wewµqv D. wewµqvi AvYweKZ¡ Soln :B 42. wewµqK AYy¸‡jv ci¯úi msNl© K‡i hLb cyiv‡bv eÜb fv‡½ Ges bZzb eÜb m„wó Ki‡Z ïiæ K‡i ZLb H Ae¯’v‡K ejv nqA. wewµqvi µg B. wewµqvi MwZi nvi C. mwµqbK…Z RwUj D. mwµqb kw³ Soln :C 43. k~b¨µg wewµqvi †¶‡Î mZ¨ bq †Kvb&wU? A. wewµqvi nvi aªæe‡Ki GKK nj mol-L 1 s 1 B. wewµq‡Ki NbgvÎv mg‡qi mv‡_ Kg‡Z _v‡K C. wewµqvi nvi mg‡qi mv‡_ cwieZ©bkxj D. Av‡jvK ivmvqwbK wewµqv k~b¨µg wewµqvi mvaviY D`vniY E. wewµqvi nvi wewµq‡Ki NbgvÎvi Dci wbf©i K‡i bv| Soln :C 44. wbw`©ó NbgvÎvi Kl `ªe‡Y 30% H2O2 `ªeY †hvM Ki‡j 100 †m‡K‡Û 105 molL1 Av‡qvwWb Drcbœ nq, wewµqvwUi Mo MwZ‡eM KZ? A. 0.03107 mol L1S 1 B. 0.03105 mol L1 s 1 C. 1.0107 mol L1 s 1 D. 1.0103 mol L1 s 1 E. 0.3107 mol L1 s Soln :C 45. ivmvqwbK Zwor †Kv‡li D‡jøwLZ †KvbwU‡Z RviY N‡U? A. K¨v‡_vW B. A¨v‡bvW C. ms‡hvM Zvi D. jeY †mZz Soln :B 46. GKwU cÖ_g µg wewµqvi Aa©vqy 28 †m‡KÛ| KZ †m‡KÛ c‡i wewµq‡Ki GK-Aógvsk Aewkó _vK‡e? A. 28 B. 84 C. 56 D. 112 Soln :B 47. GKwU cÖ_g µ‡gi wewµqvi t1/2 nj 2.5 h D³ wewµqvi †iBU aªæeK n‡eA. 7.70 10-5 s -1 B. 5 10-5 s -1 C. 2 10-5 s -1 D. 2 10-6 s -1 Soln :A 48. GKwU 1g µg wewµqvi 50% m¤úbœ nq 10 wgwb‡U, wewµqvwUi nvi aªæeK KZ? A.0.69 min-1 B. 0.069 min-1 C. 0.69 dm3 min-1 min-1 D. 0.069 min Soln : B 49. CH3COCH3(aq)+I2(aq)=CH3COCH2I(aq)+HI(aq) wewµqvwUi nvi †KvbwUi NbgvÎvi Dci wbf©i K‡i? A. I2 B. CH3COCH3 C. HI D. CH3COCH2I Soln :B 50. GKwU cÖ_g µg wewµqvi nvi 210–3 sec–1 n‡j wewµqvwUi Aa©vqyKvjA. 0.375 sec B. 15.01 sec C. 34.65 sec D. 346.5 sec Soln :D, Aa©vqZKvj, t1/2 = 0.693 K = 0.693 210–3 = 346.5 sec 51. †KvbwU wØZxq µg wewµqvi nvi aªæe‡Ki GKK? A. Lmol-1 s -1 B. s-1 C. moll-1 s -1 D. m-1 Soln :C, cÖ_g Ges wØZxq µg wewµqvi nvi aªæe‡Ki GKK h_vµ‡g min–1 /S–1 Ges mol L–1S –1 52. wewµqvi nvi wewµq‡Ki NbgvÎvi Dci wbf©i K‡i bv, A. 1g µg wewµqv B. 2q µg wewµqv C. 3q µg wewµqv D. k~b¨ µg wewµqv Soln :D 53. ¶vi cÖfvweZ A¨vwm‡Uv‡bi †eªvwgbxKiY wewµqvwU CH3COCH3 + Br2 CH3COCH2Br mgxKiY AbymiY K‡i| wewµqvwUi nvi = k [CH3COCH3] [OH– ] n‡j Gi MwZ‡eM †Kvb wewµqK¸‡jvi NbgvÎvi Ici wbf©i K‡i? A. A¨vwm‡Uvb I †eªvwgb B. A¨vwm‡Uvb I ¶vi C. ¶vi I †eªvwgb D. A¨vwm‡Uvb, ¶vi I †eªvwgb Soln : B 54. †Kvb cÖ_g µg wewµqvi nvi aªæe‡Ki gvb 1.1510–3 s –1 n‡j, wewµqvwUi 5g wewµqK 3g -G n«vm †c‡Z KZ wgwbU jvM‡e? A. 4.4 min B. 7.4 min C. 5.8 min D. 3.5 min Soln :B

| 55. GKwU cÖ_g µg wewµqvi cÖvew¤¢K NYgvÎv hw` 0.62 M †_‡K 0.52 M G n«vm †c‡Z 15 min mgq jv‡M, Z‡e wewµqvwUi Aa©vqy n‡eA. 7.5 min B. 46.5 min C. 29.6 min D. 59.2 min Soln :D 56. †Kvb cÖ_g µg wewµqvi Aa©vqy 45 wgwbU n‡j wewµqvwUi nvi aªæeK KZ? A. 4.6210–2 mm B. 5.14 10–2 mim–1 C. 1.5410–2 min–1 D. 0.154 10–2 min–1 Soln :C 57. GwmW cÖfve‡Ki Dcw¯’wZ‡Z CH3COOCH3 + H2O CH3COOH + CH3OH wewµqvwUi µgt (2008-2009) A. 0 B. 1 C. 1.5 D. 2 Soln :B 58. 1g µg wewµqvq mgq AwZevwnZ nevi m‡½ m‡½ wewµqvwUi nviA. mij‰iwLKfv‡e ev‡o B. A¨vwmg‡UvwUKfv‡e K‡g C. mij‰iwLKfv‡e K‡g D. A¨vwmg‡UvwUKfv‡e ev‡o Soln :C 59. ivmvqwbK wewµqvi nv‡i †KvbwU cÖfve †d‡j bv? A. NbgvÎv B. cÖfveK C. eY© D. ZvcgvÎv Soln :C 60. †Kvb cÖ_g µg wewµqvi Aa©vqy 30 min n‡j wewµqvwUi nvi aªæeK KZ? A. 0.2310 min-1 B. 0.0231 min-1 C. 2.310 min-1 D. 0.00231 min-1 Soln :B 61. wewµqvi Aa©vqyi Rb¨ mve©Rbxb mgxKiY †Kvb&wU? A. B. C. D. Soln :A 62. GKwU cÖ_g µg wewµqvi cÖviw¤¢K NbgvÎv 0.6 mol/dm3 †_‡K 0.2 mol/dm3 - G n«vm †c‡Z 5.0 wgwbU mgq jvM‡j wewµqvi nvi aªæeK KZ? A. 0.219 min1 B. 5.493 min1 C. 1.098 min1 D. 0.138 min1 Soln :A 63. wØZxq µ‡gi wewµqvi †eM aªæe‡Ki GKKA.s-1 B. L.mol-1 s -1 C. mol .s-1 D. aªæeK Soln :B 64. ZvcgvÎv e„w× Ki‡j wb‡¤œ D‡jøwLZ wewµqvq Av‡gvwbqvi Drcv`b wKfv‡e cÖfvweZ n‡e? N2(g) + 3H2(g) ⇌ 2NH3(g); H = –92 kJ/mol A. Increase B. Decrease C. Remain same D. None of these Soln :B 65. 18.5% N2O4 25C ZvcgvÎvq Ges 1 atm Pv‡c we‡qvwRZ n‡j Kp Gi gvb KZ? A. 0.142 atm B. 0.185 atm C. 0.220 atm D. 0.125 atm Soln :A 66. 25C ZvcgvÎvq GKwU mvg¨ve¯’v †`Iqv Av‡Q; ⇌ NH4 + (aq)+Cl– (aq) (H = +3.5 kcal mol–1 ) A. decreasing the temperature to 15C B. increasing the temperature to 35C C. dissolving NaCl crystals in the equilibrium mixture D. dissolving NH4NO3 crystals in the equilibrium mixture Soln :B 67. N2 + 3H2 2NH3 GKwU M¨vmxq wewµqv, G‡Z Kp I Kc Gi m¤úK© wb‡gœi †KvbwU? A. Kp = Kc(RT)2 B. Kp = Kc(RT)1.5 C. Kp = Kc(RT)–2 D. Kp = Kc(RT) Soln :C 68. wb‡gœi wewµqvi mvg¨aªgœeK Kc Gi mwVK GKK †KvbwU? W(aq) + 2x(aq) ⇌ 2y(aq) + 3z(aq) A. mol dm–3 B. mol2 dm–6 C. mol–1dm3 D. mol–2dm6 Soln :B 69. cUvwkqvg cvig¨v½v‡bU- †mvwWqvg AK&ªv‡jU UvB‡Uªk‡b wb‡gœi †KvbwU Zzwg e¨envi Ki‡e? A. methyl orange B. starch C. diphenylamine D. no indicator Soln :D 70. N2(g) + 3H2(g) ⇋ 2NH3(g) wewµqvwU Zv‡cvrcv`x| wewµqvwU m¤ú‡K© wb‡gœi †Kvb Dw³wU mwVK bq? A. Equilibrium constant decreases with temperature B. Catalyst increases the rate of the reaction C. Equilibrium constant increases with pressure D. Yield of NH3 increases with pressure Soln :C 71. wb‡gœi †Kvb Ae¯’vi cwieZ©‡bi d‡j mvg¨ve¯’vi mvg¨vsK K cwieZ©b n‡e? A. Temperature B. Pressure C. Concentration of reactants D. Concentration of products Soln :A 72. A + 3B ⇌ C + 2D wewµqvwUi Kc Gi gvb n‡eA. [A] [B]3 / [C] [D] B. [C] [D]2 / [A] [B]3 C. [A] [3B] / [C] [2D] D. None of the above Soln :B 73. †Kvb wewµqvq n Gi gvb 0.5| KZ †Kjwfb ZvcgvÎvq wewµqvwU KP Ges KC Gi gvb h_vµ‡g 32.5 I 2.5 n‡e- (R = 0.0821 L atm K1 mol1 )? A. 273 K B. 388.26 K C. 934.2 K D. 2058.46 K Soln :D 74. wb‡gœi †Kvb wewµqvq Pvc e„w×i d‡j mvg¨ve¯’vq Drcv‡`i cwigvY e„w× cvq? A. H2 (g)+Br2 (g)⇌2HBr (g) B. 2NO2 (g)+7H2 (g) ⇌ 2NH3 (g)+4H2O (g) k t 0.693 1/ 2 n a k t 1/ 2 a k t 1/ 2 1/ 2 2 a k t NH Cl(s) 4

| C. CO2 (g)+C (s)⇌2CO (g) D. CaCO3 (s)⇌CaO (s)+CO2 (g) Soln :B 75. wb‡gœi †Kvb wewµqvwUi Kp= Kc? A. PCl5 (g) ⇌PCl3 (g)+Cl2 (g) B. N2 (g)+3H2 (g) ⇌2NH3 (g) C. 2HI (g) ⇌H2 (g)+I2 (g) D. CO(g)+2H2(g)⇌CH3OH (g) Soln :C 76. N2 (g)+3H2 (g)⇌2NH3 (g) wewµqvwUi Kp Ges Kc Gi g‡a¨ m¤úK©wU njA. Kp=Kc(RT)2 B. Kp=Kc(RT)2 C. Kp=Kc(RT)4 D. Kp=Kc(RT)3 Soln :B, 77. wewµqvi mvg¨e¯’v aªæeK †Kvb&wUi Dci wbf©ikxj? A. wewµq‡Ki NbgvÎv B. ZvcgvÎv C. Pvc D. cÖfveK Soln :B 78. wb‡gœi †Kvb wewµqvwUi Kp = Kc ? A. PCl5 (g) ⇌ PCl3 (g) + Cl2 (g) B. N2 (g) + 3H2 (g) ⇌ 2NH3 (g) C. 2SO2 (g) + O2 (g) ⇌ 2SO3 (g) D. 2HI (g) ⇌ H2 (g) +I2 (g) Soln :D 79. H2+Cl2 2HCl +44 kcal mgxKiYwU we‡ePbv Ki| wb‡Pi †Kvb KvRwU GB wewµqvi mvg¨ve¯’v‡K Drcv‡`i w`‡K mwi‡q †`‡e? A. H2 †hvM Kiv n‡j B.Cl2 mwi‡q wb‡j C. HCl †hvM Kiv n‡j D. ZvcgvÎv e„w× Kiv n‡j Soln :A 80. GKwU wewµqvq cÖfve‡Ki cÖfve--- A. mvg¨ve¯’v‡K Drcv‡`i w`‡K mwi‡q †`‡e B. †Kej AMÖMvgx wewµqvi MwZ e„w× K‡i C. AMÖ-cðvr Dfq w`‡K wewµqvi MwZ mgvbfv‡e e„w× K‡i D. cðvrMvgx wewµqvi MwZ e„w× K‡i Soln :C 81. H2 (g) +I2 (g) 2HI (g) H = - 13 kJ/mol wewµqvwU 100C ZvcgvÎvq mvg¨ve¯’vq Av‡Q| wb‡Pi †Kvb Ae¯’vwUi Rb¨ nvB‡Wªv‡Rb Av‡qvWvB‡Wi kZKiv nvi mvg¨ wgkÖ‡Y †e‡o hv‡e? A. Pvc Kg‡j B. ZvcgvÎv Kg‡j C. Pvc evo‡j D. ZvcgvÎv evo‡j Soln :B 82. DfgyLx wewµqv‡K GKgyLx Kivi †¶‡Î †KvbwU cÖ‡hvR¨? A. wewµqK¸‡jv hw` KwVb ev Zij nq Ges GKwU Drcv` M¨vmxq nq B. GKwU Drcv` `ªeY †_‡K Aatw¶ß n‡j C. †Kvb Drcv`‡K ivmvqwbK wewµqvi gva¨‡g mwi‡q wb‡j D. meKwUB Soln :D 83. †nevi c×wZ‡Z NH3 cÖ¯‘wZ GKwUA. Zv‡cvrcv`x wewµqv B. Zvcnvix wewµqv C. mvg¨ve¯’vi wewµqv D. mvg¨ aªæeK wewµqv Soln :A 84. GKwU Ave× cv‡Î nvB‡Wªv‡Rb I Mvp †e¸wb e‡Y©i Av‡qvwWb wb‡gœi KZ ZvcgvÎvq (C) †i‡L w`‡j nvB‡Wªv‡Rb Av‡qvWvBW Drcbœ nq? A. 450 B. 550 C. 350 D. 250 Soln :A 85. wb‡gœi †KvbwU B_vBj B_v‡bv‡qU? (10–11) A. C2H5OH B. CH3CO2C2H5 C. CH3COOH D. CH3COONa Soln :B, A. C2H5OH B_vbj B. CH3COONa †mvwWqvg B_vb‡qU C. CH3COOH B_v‡bvwqK GwmW 86. mvg¨ aªæeK msµvšÍ wb‡gœi †Kvb dg~©jvwU mwVK bq? A. B. C. Kp = Kc(RT)n D. n > = 0 me©¶Y Soln :D 87. GKwU wbw`©ó ZvcgvÎv Ges mg‡q †h †Kvb wewµqvq nvi wewµqK¸‡jvi mwµq f‡ii mv‡_ wbgœewY©Ziƒ‡c m¤úwK©Z? A. mgvbycvwZK B. e‡M©i mgvbycvwZK C. eM©g~‡ji mgvbycvwZK D. e¨v¯ÍvbycvwZK Soln :A 88. 1 L (WvBA‡·b) `ªveK C2H5OH I CH3CO2H Gi cÖwZwUi 1 †gvU wewµqv K‡i ci cÖ‡Z¨K weKvi‡Ki GK †gv‡ji GK-Z…Zxqvsk Aewkó _v‡K, ZLb mvg¨ve¯’v AwR©Z nq| G Ae¯’vq wewµqvwUi mvg¨ve¯’v aªeK (K) KZ? A. K = B. K = 2 C. K = 1 D. K = 4 Soln :D 89. wb‡Pi Dcv`b¸‡jvi g‡a¨ †KvbwU mvg¨ aªæeK, Kc cwieZ©b Ki‡Z cv‡i? (07-08, 06-07) A. Pvc B. ZvcgvÎv C. NbgvÎv D. cÖfvK Soln :B 90. †KvbwU mgmË¡ mvg¨ve¯’vi D`vniY bq? A. 2SO2(g)+O2(g)⇋2SO3(g) B. CaCO3(s)⇋CaO(s)+CO2(g) C. N2(g)+H2(g)⇋2NH3(g) D. H2(g)+I2(g)⇋2HI(g) Soln :B 91. wb‡Pi †Kvb †Rvov †hŠM Lvevi wn‡m‡e cvIqv hvq? A. A¨vwmwUK GwmW I mvBwUªK GwmW B. A¨vwmwUK GwmW I bvBwUªK GwmW C. mvBwUªK GwmW nvB‡Wªv‡K¬vwiK GwmW D. †ebRwqK GwmW I mvBwUªK GwmW Soln :A 92. N2(g)+3H2(g) ⇄ 2NH3(g) + 46 KJmol1 wewµqvwU cÖfve‡Ki Dcw¯’wZ‡Z wb‡gœi †Kvb Ae¯’vq A¨v‡gvwbqvi myweavRbK a b c l m n c [A] [B] [C] [L] [M] [N] K a b c l m n p PA PB PC PL PM PN K 4 1

| Drcv`b wbwðZ Ki‡e? N2(g) + 3H2(g) ⇌ 2NH3(g) + 46 KJmol1 ) A. AwaK ZvcgvÎv I AwaK Pvc B. Kg ZvcgvÎv I Kg Pvc C. Kg ZvcgvÎv I AwaK Pvc D. AwaK ZvcgvÎv I Kg Pvc Soln :C 93. wb‡gœi †Kvb wewµqvwUi Kp I Kc Gi gvb mgvb? A. PCl5(g)⇄PCl3(g)+Cl2(g) B. N2(g)+3H2(g)⇄2NH3(g) C. 2SO2(g)+O2(g)⇄2SO3(g) D. 2HI(g)⇄H2(g)+l2(g) Soln :D 94. mvg¨aªæeK Gi †¶‡Î cÖ‡hvR¨- A. wewµqvi MwZ m¤^‡Ü aviYv †`q B. wewµqvi e¨vwß m¤^‡Ü aviYv †`q C. Pv‡ci cwieZ©‡b mvg¨aªæe‡Ki cwieZ©b nq D. cÖfve‡Ki Dcw¯’wZ‡Z mvg¨aªæe‡Ki cwieZ©b nq Soln :B 95. wb‡Pi wbw®Œq M¨vm ¸wji g‡a¨ †KvbwU ZijxKiY Kiv mnR? A. He B. Ne C. Ar D. Kr Soln :A 96. 800C G H2 I I2- Gi g‡a¨ wewµqvwU mvg¨ve¯’vq DcbxZ nq H2(g) + I2(g) = 2HI (g). H = -13 kj/†gvj| wb‡gœi †Kvb& kZ©wU cwieZ©b Kiv n‡j mvg¨e¯’vq wgkÖ‡Y HI- Gi cwigvY e„w× cv‡eA. Pvc n«vm B. Zvc n«vm C. Pvc e„w× D. Zvc e„w× Soln : B 97. wb‡Pi wewµqvq ZvcgvÎv evov‡jPCl5 (g) ⇌ PCl3 (g) + Cl2 (g); H = 90 kJ mol–1 A. wewµqvwUi mvg¨ve¯’v evg w`K †_‡K Wvb w`‡K hv‡e B. wewµqvwUi mvg¨ve¯’v Wvb w`K †_‡K evg w`‡K hv‡e C. PCl5 (g) Gi cwigvY †e‡o hv‡e D. PCl3 (g) Gi cwigvY K‡g hv‡e Soln :A 98. GKwU DfgyLx wewµqvi Drcv`K I wewµqK meB M¨vm| 27C ZvcgvÎvq Kp I Kc Gi AbycvZ 620:1 n‡j wewµqvwU‡Z †gvjmsL¨vi (n) KZ cwieZ©b nq? A. 1 B. 4 C. 3 D. 2 Soln :D 99. A B + C wewµqvi mvg¨v¼ gvb 10 n‡j, wecixZ wewµqvi mvg¨v‡¼i gvb KZ? A. 100 B. 10 C. 1 D. 0.1 E. 0.01 Soln :D 100.†KvbwU wbw®Œq M¨vm bq? A. wnwjqvg B. wbqb C. AvM©b D. †Rbb E. Kve©b WvB A·vBW Soln :E 101.evqygÛ‡j wb‡gœi †KvbwU me‡P‡q †ekx cvIqv hvq? A. He B. Ne C. Ar D. Kr E. Rn Soln :C 102.Na2CO3 Gi Rjxq `ªeY †Kvb cÖK…wZi? A. GwmWxq B. ¶vixq C. wbi‡c¶ D. Dfqag©x E. me¸‡jv Soln :B 103.H2+I2 ⇄2HI wewµqvwUi †¶‡Î †Kvb&wU cÖ‡hvR¨? A. Kp>Kc B. Kp=KC C. Kp<Kc D. Kp=Kc E. †KvbwUB mwVK bq Soln :B 104.evqygÛ‡j †Kvb& wbw®Œq †gŠ‡ji cwigvY m‡e©v”P? A. He B. Neon C. Argon D. wµcUb E. †Rbb Soln :C 105.N2 + 3H2 2NH3 + Zvc : wewµqvwUi †¶‡Î †Kvb&wU wg_¨v? A. wewµqvi d‡j Zvc Drcbœ nq B. bvB‡Uªv‡R‡bi cwigvY evo‡j Drcv`‡bi cwigvY ev‡o C. Pvc evo‡j Drcv`‡bi cwigvY e„w× cvq D. AvqZb ms‡KvPb Ki‡j Drcv`‡b cwigvY e„w× cvq E. ZvcgvÎv e„w× Ki‡j Drcv`‡bi cwigvY e„w× cvq Soln :E 106.100 ml Rjxq `ªe‡Y GKwU `ye©j Gwm‡Wi cwigvY 6.7 mmol Ges Dnvi †mvwWqvg je‡Yi cwigvY 4.5 mmol `ªeYwUi pH 4.6 `ªeYwU‡Z 900 ml cvwb †hvM K‡i 10 ¸Y cvZjv Kiv n‡jv| `ªeYwUi pH KZ n‡e? A. 3.6 B. 4.6 C. 5.6 D. 14 Soln :B 107.25 C DòZvq N2O4 Ges NO2 Gi mvg¨ve¯’vq wgkÖ‡Y Zv‡`i AvswkK Pvc h_vµ‡g 0.69 Ges 0.31 atms. N2O4 we‡qvRb wewµqvq Kp Gi gvb KZ? A. 0.2726 atms B. 0.139 atms C. 0.449 atms D. 0.898 atms Soln :B 108. ⇄ , wewµqvq ZvcgvÎv evov‡j mvg¨ve¯’v †Kvb w`‡K AMÖmi n‡e? A. m¤§yL w`‡K B. cðvr w`‡K C. w¯’i _vK‡e D. †KvbwUB bv Soln :B 109. wb‡Pi †Kvb Ae¯’vi cwieZ©b NUv‡j mvg¨ve¯’v Wvbw`‡K mi‡e? A. cÖfveK †hvM Ki‡j B. AwZwi³ O2 †hvM Ki‡j C. Pvc Kgv‡j D. ZvcgvÎv evov‡j Soln :B 110. wewµqv mvg¨ve¯’vq NbgvÎvi gvb h_vµ‡g [A2] = 0.5 mol/L, [B2] = 0.1 mol/L Ges [A2B] = 2.0 mol/L n‡j mvg¨vaªæeK Kc KZ GKK? A. 0.1 B. 2.6 C. 160 D. 40 Soln :C 111.25C ZvcgvÎvq I 1.5 evqyPv‡c 15.6% PCl5 we‡qvwRZ nq| D³ we‡qvR‡b Kp Gi gvb n‡”Q: A. 0.4912 atm. B. 0.0534 atm. C. 0.0374 atm. D. 0.3465 atm. N2(g) 3H2(g) 1 2NH3(g) H 92kJ mole 2SO2(g) O2(g) 2SO3(g) Zvc 2A2(g) B2(g) 2A2B(g)

| Soln :C 112.N2(g) + 3H2(g) ⇌ 2NH3(g) + 92.2 kj/mol wewµqvwUi Rb¨ wb‡gœi †Kvb& Dw³wU mZ¨ bq? A. ZvcgvÎv evov‡j Drcv` ev‡o B. Pvc evov‡j Drcv`b ev‡o C. ZvcgvÎv Kgv‡j Drcv` ev‡o D. N2 I H2 †hvM Ki‡j Drcv` ev‡o Soln :A 113.†Kvb DfgyLx wewµqvi ∆n Gi gvb ½. KZ †Kjwfb ZvcgvÎvq wewµqvwUi Kp I Kc Gi gvb hv_vµ‡g 40.5 I 5.5 n‡e? (R = 0.082 L.atm. K-1 .mol-1 ) A. 220.5 K B. 661.26 K C. 66.26 K D. 22.26 K Soln :B 114.298 K ZvcgvÎvq mvg¨ve¯’vq N2O4 Gi we‡qvRb wgkÖ‡Y N2O4 Gi AvswkK Pvc 0.8 atm Ges wewµqvwUi Kp = 0.008 atm| NO2 Gi AvswkK Pvc wbY©q Ki| A. 0.0064 atm B. 0.08 atm C. 0.01 atm D. 0.064 atm Soln :B 115.30C ZvcgvÎvq 3.0 atm Pv‡c 15.6% PCl5 we‡qvwRZ nq| D³ ZvcgvÎvq Kp Gi gvb n‡eA. 7.48102 atm B. 7.48101 atm C.7.48103 atm D. 6.48102 atm Soln :A 116.†Kvb wewµqvq wewµqK I Drcv`‡Ki †gvj msL¨v hLb mgvb nq, ZLbA. Kp = Kc B. Kp = Kc2 C. Kp + Kc D. Kp Kc Soln :A, n Gi gvb k~b¨ n‡j Kp = Kc nq, †hgb: H2 + I2 2HI Gi †¶‡Î n = 0 myZivs G‡¶‡Î KP = KC 117.†Kvb wewµqvwUi Kc-Gi GKK mol–1 L? A. N2O4 = 2NO2 B. 2NH3 = N2 + 3H2 C. 2NO + O2 = 2NO2 D. N2 + 3H2 = 2NH3 Soln :C 118.†Kvb wewµqvwUi Kp-Gi gvb Dnvi Kc-Gi gvb A‡c¶v eo? A. N2 + 3H2O = 2NH3 B. H2 + I2 = 2HI C. PCl3 + Cl2 = PCl5 D. 2SO3 = 2SO2 + O2 Soln :D 119.Ave× cv‡Î msNwUZ †Kvb DfgyLx wewµqvi mvg¨aªæe‡Ki gvb‡K cÖfvweZ K‡i? A. wewµq‡Ki cwigvY e„w× B. Drcv‡`i cwigvY n«vm C. cÖfve‡Ki Dcw¯’wZ D. ZvcgvÎvi cwieZ©b Soln :D 120.N2(g) + 3H2(g) ⇔ 2H3(g) wewµqvwUi †¶‡Î †KvbwU mwVK? A. Zvc evov‡j Drcv`b ev‡o B. Pvc evov‡j Drcv`b K‡g C. Pvc evov‡j Drcv`b ev‡o D. mKj Zvc I Pv‡c Drcv`b AcwiewZ©Z _v‡K Soln :C 121.Rjxq 0.02 M Ba(OH)2 `ªe‡Yi pH gvbA. 12 B. 13 C. 12.6 D. 13.5 Soln :C 122.`ªe‡Y GKwU `ye©j ¶viK Zvi je‡Yi Dcw¯’wZ‡Z AviI `ye©j nevi KviYA. Av`ªwe‡kølY B. cÖkgb C. AvqbxKiY D. mg-Avqb cÖfve Soln :D 123.†Kvb jeYwUi Rjxq `ªeY ¶vixq? A. NH4Cl B. KCl C. NaCN D. AgNO3 Soln :C 124.NaOH Øviv CH3COOH †K UvB‡Uªk‡bi Rb¨ Dchy³ wb‡`©kK n‡jvA. †dbjd_¨vwjb B. wg_vBj A‡iÄ C. wg_vBj †iW D. †h †Kvb wb‡`©kK Soln :A 125.Zxeª GwmW I g„`y ¶vi cÖkg‡b †Kvb wb‡`©kK e¨eüZ nq? A. wjUgvm B. wg_vBj A‡iÄ C. wdbjd_¨vwjb D. _vBgj eøy Soln :B 126.cvwb †Kvb ˆewkó¨ cÖ`k©b K‡i? A. A¤øxq B. ¶vixq C. wbi‡c¶ D. me¸‡jv Soln :D 127.†Kvb `ªe‡Yi p H 4 n‡j H `ªe‡Y OH- Avq‡bi NbgvÎv n‡eA. 10-11 mol l-1 B. 10-10 mol l-1 C. 10-4 mol l-1 D. 10-9 mol L-1 Soln :B 128.Rjxq `ªe‡Y †dbd‡_wj‡bi eY© cwieZ©‡bi p H-cwimi n‡eA. 7.0-9.0 B. 6.5-8.5 C. 8.3-10.0 D. 5.5-7.0 Soln :C 129.†Kvb je‡Yi Av`ª© we‡køl‡Yi A¤-xq `ªeY ˆZix nq? A. NaCl B. NH4Cl C. Na2CO3 D. KNO3 Soln :B 130.w¯’i ZvcgvÎvq N2(g) + 3H2(g) 2NH3(g) + 92.22 kJ wewµqvwUi mvg¨ve¯’vq Pvc e„w× Ki‡j Kx NU‡e? A. mvg¨ Wvb w`‡K AMÖmi n‡e B. mvg¨ evg w`‡K AMÖmi n‡e C. mvg¨ w¯’i _vK‡e D. †KvbUvB bq Soln :A 131.Kp I Kc - Gi g‡a¨ m¤úK©wU n‡et A. Kp = Kc (RT)n B. Kp= (RT) - n C. Kp = KcRTn D. Kp-KcR nT Soln :A 132.weï× cvwb‡Z OH- Avq‡bi NbgvÎv KZ? A. 10-8 mol L-1 B. 10-7 mol L-1 C. 10-6 mol L-1 D. 10-5 mol L-1 Soln :B 133.evqygЇji CO2 cvwb‡Z `ªexf‚Z n‡q †h GwmW ˆZix K‡i Zvi bvgA. Kve©vwgK GwmW B. Kv‡e©vwjK GwmW C. Kve©wbK GwmW D. Kv‡e©v‡bU GwmW Soln :C

| 134.GKwU `ªe‡Yi pH 4.25 n‡j [H+ ] KZ †gvj/wjUvi? A. 5.610-5 B. 5.210-5 C. 5.010-5 D. 5.610-6 Soln :A 135.A¨vwmwUK Gwm‡Wi Ka Gi gvb 1.8 10-5 n‡j 0.3M A¨vwmwUK Gwm‡Wi Rjxq `ªe‡Yi p H KZ? A. 1.63 B. 2.06 C. 2.63 D. 2.03 Soln :C 136.cvK¯’wji cvPKi‡m p H Gi gvb 1.4 n‡j H+ Avq‡bi NbgvÎv KZ? A. 0.0488 M B. 0.02782 M C. 0.0398 M D. 0.0598 M 137.0.01 mol/L NbgvÎv wewkó nvB‡Wªvwbqvg Avqb (H3O+ ) `ªe‡Yi p OH KZ? A. 2 B. 12 C. 10 D. 14 Soln :B 138.wb‡gœi †KvbwU AmZ¨? A. NH+ 4 is the conjugate acid of base NH3 B. NH3 and H2O are conjugate pair C. OH– is the conjugate base of acid H2O D. OH– and H2O are conjugate pair Soln :B 139.wb‡gœi wgkªYmg~n †_‡K evdvi `ªeYwU kbv³ KiÑ A. 0.2 M 10 mL CH3COOH + 0.2 M 10 mL NaOH B. 0.2 M 10 mL CH3COOH + 0.1 M 10 mL NaOH C. 0.1 M 10 mL CH3COOH + 0.2 M 10 mL NaOH D. 0.2 M 10 mL HCL + 0.1 M 10 mL NaoH Soln :B 140.20 ml 0.2 M B_vbwqK GwmW (ka = 1.0 10–5 ) Ges 20 ml 0.10 M NaOH `ªe‡Yi wgkª‡Yi gva¨‡g cÖ¯‘ZK…Z evdvi `ªe‡Yi pH njA. 4.7 B. 5.0 C. –4.7 D. 7.0 Soln : A 141.0.002M mvjwdDwiK GwmW `ªe‡Yi pH njA. 2.70 B. 4.20 C. 2.40 D. 3.00 Soln :C 142.wb‡Pi †Kvb `ªe‡Yi pH 7.0 A‡c¶v †ekx? A. 0.01 M CH3COOH B. 0.01 M NaCl C. 0.01 M NH4Cl D. 0.01 M Na2CO3 Soln :D 143.wb‡gœi †KvbwU evdvi `ªeY? A. CH3COOH & NaOH B. CH3COOH & CH3COONa C. NaOH & Na2CO3 D. HCl & NaCl Soln :B 144.GKwU d‡ji i‡m nvB‡Wªv‡Rb Avq‡bi NbZ¡ 3.3102 M n‡j H i‡mi pH KZ? A. 2.00 B. 1.48 C. 4.48 D. 2.18 C. Kp=Kc(RT)1 D. Kp=Kc(RT) Soln :B 145.hw` †Kvb `ªe‡Yi pH -Gi gvb 2 †_‡K 5 -G cwieZ©b Kiv nq Z‡e `ªe‡Y H+ Avq‡bi NbgvÎv KZ ¸Y Kg‡e? A. 103 B. 102 C. 10-3 D. 5 Soln :C 146.wb‡Pi †Kvb& `ªe‡Yi pH 7.0 A‡c¶v †ewk? A. 0.01M CH3COOH B. 0.01M NaCl C. 0.01M NH4Cl D. 0.01M Na2CO3 Soln : D 147.GKwU `ªe‡Yi p H n‡jv 5.0| GB `ªe‡Yi g‡a¨ ch©vß cwigvY GwmW †hvM K‡i Gi p H 2.0-†Z bvwg‡q Avbv n‡jv| G‡Z `ªe‡Y H+ Gi NbgvÎvi e„w× n‡jvA. 1000 times B. 2.5 times C. 100 times D. 5 times Soln :A 148.0.1 M nvB‡Wªv‡K¬vwiK Gwm‡Wi p H gvb KZ? A. 0.1 B. 1.0 C. 1.1 D. 10.1 Soln :B 149. wb‡æi †Kvb&wU pH-Gi cwieZ©‡bi mv‡_ is cwieZ©b K‡i bv? A. †dbj †iW B. wbDUªvj †iW C. †dbjd_¨vwjb D. wg_vBj fv‡qv‡jU Soln :C 150.wb‡gœi †Kvb Gwm‡Wi pka = 3.74? A. diwgK B. webRwqK C. A¨vwmwUK D. UªvB‡K¬viv A¨vwmwUK Soln :A 151.wb‡gœi †Kvb pH Gi Dc‡i n‡j gvwUi De©iZv webó nq? A. 6.5 B. 7.5 C. 9.5 D. 8.5 Soln :C 152.wb‡gœi †KvbwU †dbj †iW-Gi eY© cwieZ©‡b p H Gi cwimi? A. 6.88.4 B. 8.310.0 C. 3.85.4 D. 3.14.4 Soln :A 153.gvby‡li agbxi i‡³i pH Gi gvb 7.4 n‡j, i‡³ nvB‡Wªv‡UR Avq‡bi NbgvÎv KZ? A. 3.89 10–7 mol L–1 B. 3.98 10–7 mol L–1 C. 3.98 10–8 mol L–1 D. 3.89 10–8 mol L–2 Soln :C 154.Pvlvev‡`i Rb¨ gvwUi p H KZ nIqv cÖ‡qvRb? A. 3-4 B. 4-5 C. 7-8 D. 10-11 Soln :C 155.Zxeª GwmW I g„`y ¶viK UvB‡Uªk‡b e¨eüZ Dc‡hvMx wb‡`©kK wb‡gœi †KvbwU? A. wg_vBj A‡iÄ B. wg_vBj †iW C. †dbjd&_¨vwjb D. _vBgj_¨vwjb Soln :A, B 156.wb‡gœi KZ p H Gi †ewk cwiewZ©Z n‡j gvby‡li Rxeb msKUvcbœ nq? A. 0.7 B. 0.5 C. 0.8 D. 0.6 Soln :A,B 157.wbi‡c¶ Zi‡ji pH wb‡gœi †KvbwU?

| A. 7 B. 5 C. 12 D. 14 Soln :B 158.†KvbwU mwVK bq? A. †nìvimb n¨v‡mjevK mgxKi‡Yi mvnv‡h¨ jeY I Gwm‡W NbgvÎv †_‡K GKwU evdvi `ªe‡Yi ARvbv p H MYbv Kiv hvq| B. GKwU c`v_© wfbœ wfbœ †¶‡Î GwmW I ¶viK Dfq wn‡m‡e KvR Ki‡Z cv‡i C. wKQzwKQz mg‡hvRx †hŠM †cvjvi `ªve‡K `ªexf~Z n‡j we`y¨r cwienb Ki‡Z cv‡i D. RCOOH Ges NH4OH g„`y Zwor we‡kø‡l¨i D`vniY| Soln :A 159.bx‡Pi †Kvb `ªeYwUi pH gvb †ewk? A. 0.01 M HCl B. 0.01 M HNO3 C. 0.01 M HClO4 D. 0.01 M CH3COOH Soln :D 160.GKwU evdvi `ªe‡Y 0.2 †gvj `ye©j g‡bv‡ewmK GwmW (pKa = 4.8) Ges 0.02 †gvj Gwm‡Wi †mvwWqvg jeY Av‡Q| Gi pH Gi gvb †KvbwU? A. 2.8 B. 3.8 C. 4.8 D. 5.5 Soln :B 161.bx‡Pi †Kvb `ªe‡Yi pH 7 A‡c¶v †ewk? A. 0.01 M NaCl B. 0.01 M CH3COOH C. 0.01 M Na2CO3 D. 0.01 M NH4Cl Soln :C 162.†dbd_¨vwjb wb‡`©kK A¤øxq `ªe‡Y †Kvb eY© aviY K‡i? A. bxj B. †Mvjvcx C. njy` D. eY©nxb Soln :D 163.evdvi `ªe‡Yi †¶‡Î †KvbwU cÖ‡hvR¨? A. Zxeª GwmW I Zvi jeY B. `ye©j GwmW I `ye©j ¶vi C. `ye©j GwmW I Zvi jeY D. GwmW I `ye©j wb‡`©kK Soln :C 164.0.025 M HCl `ªe‡Yi p H KZ? A. 1.0 B. 1.60 C. 1.3 D. 1.2 Soln :B 165.†KvbwU evdvi (buffer) `ªeY? A. CH3COOH + CH3COONa B. NH4Cl+NH4OH+NaCl C. CH3COOH+CH3COOHNa D. NH4OH+NaCl Soln :A 166.†Kvb †Rvov Gwm‡W ZxeªZvi µg fzj? A. CH3COOH > CH3CH2COOH B. ClCH2COOH > CH3COOH C. HClO4> HNO3 D. HF > HCl Soln :D 167. gvby‡li i‡³i pH = 7.4 n‡j, nvB‡Wªv‡Rb Avq‡bi NbgvÎv KZ? A. 4.0 108 molL1 B. 4.0 107 molL1 C. 1.0 107 molL1 D. 1.4 107 molL1 Soln :A 168.0.1 M nvB‡Wªv‡K¬vwiK Gwm‡Wi pH gvb KZ? A. 0.1 B. 1.0 C. 1.1 D. 10.1 Soln :B 169.†Kvb `ªe‡Yi pH Gi gvb 8.45 n‡j `ªe‡Y nvB‡Wªv‡Rb Avq‡bi NbgvÎv KZ n‡e? (2008-2009) A. 5.00104 M B. 3.55109 M C. 1.82103 M D. 9.25101 M Soln :B 170.AYyeÜx GwmW I ¶viK hyM‡ji g‡a¨ cv_©K¨ wK? A. GKwU H cigvYy B. GKwU H+ Avqb C. GKwU AYy cvwb D. GKwU OH Avqb Soln :B 171.wb‡gœi †Kvb hyMj evdvi `ªeY ˆZix K‡i? A. CH3COOH and NaOH B. HCl and NaOH C. CH3COOH and CH3COONa D. CaCl2 and K2CO3 Soln :A 172.GKwU `ªe‡Yi p H = 1.48 n‡j `ªe‡Y nvB‡Wªv‡Rb Avq‡bi NbgvÎv KZ n‡e? A. 3.3102 moldm3 B. 0.075 moldm3 C. 2.9102 moldm3 D. 2.5 moldm3 Soln : A 173.eªb‡óW-jvEix ZË¡ Abyhvqx wb‡Pi †KvbwU GwmW? A. Ggb GKwU †hŠM hv †cÖvUb `vb K‡i B. Ggb GKwU Avqb hv †cÖvUb `vb K‡i C. Ggb GKwU †hŠM ev †cÖvUb MÖnY K‡i D. Ggb GKwU †hŠM ev Avqb hv †cÖvUb `vb K‡i Soln :A 174.gvby‡li agbxi i‡³i pH 7.40 n‡j i‡³ H+ Avq‡bi NbgvÎv KZ? A. 3.98108 mole L1 B. 5.01108 mole L1 C. 2.38108 mole L1 D. 5.01108 mole L1 Soln :A 175.wb‡gœi †KvbwU K¨vUvqwbK †kÖYxi A¤ø? A. H2SO4 B. H2CO3 C. CH3COOH2 D. CH3COOH Soln :C 176.298K ZvcgvÎvq cvwbi AvqwbK ¸Ydj (Kw) n‡eA. 110-7 B. 110-14 C. 210-7 D. 210-14 Soln :B 177.cvwbi pH Gi †¶‡Î †KvbwU mwVK- (08-2009) A. Pv‡ci Dci wbf©ikxj B. Pv‡ci Dci wbf©ikxj bq C. Zv‡ci Dci wbf©ikxj D. Zv‡ci Dci wbf©ikxj bq

| Soln :C 178.p H K_vwU †bIqv n‡q‡QA. Puissanced hydrogen †_‡K B. Pressured hydrogen †_‡K C. Puisand hydrogen †_‡K D. Passion hydrogen †_‡K Soln :A 179.0.001 †gvjvi A¤øxq `ªe‡Yi- p H gvb KZ? A. 1.00 B. 2.0 C. 3.0 D. 4.0 Soln :C 180.p H 2-Gi `ªe‡Yi Zzjbvq p H 5-Gi `ªeY KZ ¸Y Kg Avw¤øK? A. 3 B. 10 C. 100 D. 1000 E.105 Soln :D 181.106 M NaOH-Gi `ªeY‡K kZ ¸Y jNy `ªe‡Y cwiYZ Ki‡j p H KZ n‡e? A. 56 B. 67 C. 78 D. 89 E. 910 Soln :E 182. 0.01M KOH `ªe‡Yi pH KZ? A. 1 B. 2 C. 5 D. 12 E. 10 Soln :D 183.H2O + NH3 ⇌ NH4 + + OH– wewµqvq cvwb GKwUA. ¶vi B. wbi‡c¶ †hŠM C. AYyeÜx ¶viK D. GwmW E. AYyeÜx GwmW Soln :D 184.†dbjd_¨vwjb wb‡`©k‡Ki eY© cwieZ©‡bi pH n‡”QA. 8–10 B. 9–12 C. 10–14 D. 5–7 E. 6–8 Soln :A 185.0.001 M NaOH `ªe‡Yi pH KZ? A. 11 B. 10 C. 3 D. 14 E. 0.1 Soln :A 186.†Kvb `ªe‡Yi P H 4 n‡Z 5 G e„w× †c‡j `ªeYwUi H+ Avq‡bi NbgvÎvA. A‡a©K n‡e B. 10 ¸Y K‡g hv‡e C. wظY n‡e D. 10 ¸Y †e‡o hv‡e E. AcwiewZ©Z _vK‡e Soln :B 187.†cÖvUbxq gZev` †Kvb mv‡j cÖKvwkZ nq? A. 1941 B. 1923 C. 1925 D. 1931 E. 1936 Soln :B 188.gvwUi pH KZ _vKv evÃbxq? A. 6 – 7 B. 7 – 8 C. 8 – 9 D. 5 – 6 E. 0 Soln :C 189.0.01M NaOH `ªe‡Yi pH KZ? A. 12 B. 14 C. 10 D. 8 E. 2 Soln :A 190.hw` †Kvb `ªe‡Yi pH = 3.6 nq, Zvn‡j [H+ ] KZ? A. 2.51 10–4 M B. 3.9 10–3 M C. 5.5 10–1 M D. 2.7 10–2 M Soln :A 191.wb‡gœi †Kvb&wUi pH me‡P‡q †ekx? A. 0.1 M HCl B. 1.0 M Na2CO3 C. 1.0M NaCl D. 0.01M NaOH Soln :D 192.me©v‡c¶v `~e©j A¤ø †KvbwU? A. HNO2 B. HNO3 C. H2SO3 D. H2SO4 E. H3PO4 Soln :A 193.0.001M KOH `ªe‡Yi p H KZ? A. 3 B. 2 C. 11 D. 12 E. 13 Soln :C 194.nvB‡Wªv‡Rb Avq‡bi NbgvÎv †ekx n‡j p H Gi gvbA. ev‡o B. K‡g C. cwieZ©b nq bv D. k~b¨ nq E. evdvi nq Soln :B 195.Na2CO3 Gi Rjxq `ªeY †Kvb cÖK…wZi? A. GwmWxq B. ¶vixq C. wbi‡c¶ D. Dfqag©x E. me¸‡jv Soln :B 196.p H wK? A. pH = -log [OH- ] B. pH = log [H' ] C. pH = - log (H') D. pH = - log [H'] E. pH = log [OH'] Soln :D 197.¶vi nj Ggb GKwU c`v_© hv GKwU †cÖvUb MÖnY Ki‡Z cv‡i- GwU Kvi gZev`? A. eªb‡óW-jvDwi gZev` B. AvqwbK gZev` C. jyBm gZev` D. Avi†nwbqvm gZev` E. †KvbwUB bq Soln :A 198.SO4 2- Ges PO4 3- AbyeÜx GwmW n‡”QA. H2SO4, H2PO4 - B. HSO4 - ,HPO4 2- C. HSO4 - ,H2PO4 - D. H2SO4,H3PO4 E. H2SO4,HPO4 2- Soln :B 199.0.365% HCl `ªe‡Yi p H KZ? A. 0 B. 1 C. 2 D. 3 E. 4 Soln :B 200.GKwU ˆRe Gwm‡Wi we‡qvRb gvÎv 10% n‡j H Gwm‡Wi 0.001 M `ªe‡Yi p H KZ n‡e? A. 1 B. 3 C. 4 D. 0 Soln :C

| 201.100 ml Rjxq `ªe‡Y GKwU `ye©j Gwm‡Wi cwigvY 6.7 mmol Ges Dnvi †mvwWqvg je‡Yi cwigvY 4.5 mmol `ªeYwUi pH 4.6 `ªeYwU‡Z 900 ml cvwb †hvM K‡i 10 ¸Y cvZjv Kiv n‡jv| `ªeYwUi pH KZ n‡e? A. 3.6 B. 4.6 C. 5.6 D. 14 Soln :B 202.wb‡gœi †KvbwU fzj? A. 10–2M HCl `ªe‡Yi pH Gi gvb 2 B. 0.01 M Na2CO3 `ªe‡Yi pH Gi gvb 7 †_‡K Kg C. 0.01 M NaOH `ªe‡Yi pH Gi gvb 12 D. 10–9M HCl `ªe‡Yi pH Gi gvb 9 Soln :B 203.i‡³i g‡a¨ †Kvb evdvi we`¨gvb? A. Kve©‡bU-evBKve©‡bU B. evBKve©‡bU-Kve©wbK GwmW C. Kve©‡bU-Kve©wbK GwmW D. evBKve©‡bU-Kve©WvBU A·vBW Soln :B 204.0.1 M HCl Gi pH KZ? A. 1 B. 13 C. 8 D. 6 Soln :A 205.wb‡Pi wewµqvq †KvbwU GwmW, †KvbwU ¶viK? HNO3 + 2H2SO4 ⇄ H3O+2HSO4 ⊝+ NO2 ⊝ A. H2SO4 GwmW, HNO3 ¶viK B. H2SO4 ¶viK, HNO3 GwmW C. H2SO4 Ges HNO3 `ywUB GwmW wnmv‡e AvPiY K‡i D. H2SO4 Ges HNO3 `ywUB ¶viK Soln :A 206.30 cm3 0.12 M NaOH `ªe‡b 15 cm3 0.11 M †hvM Ki‡j `ªeYwU n‡eA. A¤øxq B. ¶vixq C. wbi‡c¶ D. jeYv³ Soln :B 207.jyBm ¶vi †KvbwU? A. NaOH B. KOH C. A¨vwgb D. nvBWªw·j A¨vwgb Soln :A 208.Ca avZz cvwb‡Z wgwkÖZ K‡i Zv‡Z †dbjd_¨vwjb †hvM Ki‡j `ªeYwUi eY© n‡eA. †Mvjvcx B. †e¸bx C. bxj D. eY©nxb| Soln :A 209.10 ml 0.1 M A¨vwmwUK GwmW `ªe‡Y 4 ml 0.1 M NaOH `ªeY †hvM Ki‡j Drcbœ `ªe‡Yi pH KZ n‡e? [pKa = 4.76] A. 3.58 B. 4.58 C. 6.23 D. 4.32 Soln :B 210.wb‡gœi †KvbwU me‡P‡q Zxeª GwmW? A. HClO B. HClO4 C. HClO3 D. HClO2 Soln :B 211.H2SO4-Gi KbRy‡MU ¶vi †KvbwU? A. SO3 2– B. H3O+ C. HSO4 – D. H3SO3 Soln :C, H2SO4 GKwU H Z¨vM K‡i HSO4 – G cwiYZ nq ZvB H2SO4 Gi KbRy‡MU ¶vi nj HSO4 – 212.†KvbwU AwaK kw³kvjx ¶vi? A. NH3 B. CH3NH2 C. C6H5NH2 D. N2 Soln :B 213.CH3COOH-Gi Rjxq `ªe‡Y CH3COONa †hvM Ki‡j `ªe‡YA. H+ msL¨v evo‡e B. pH evo‡e C. pH Kg‡e D. †KvbwUB bq Soln :D 214.Rjxq 0.02 M Ba(OH)2 `ªe‡Yi pH gvbA. 12 B. 13 C. 12.6 D. 13.5 Soln :C 215.`ªe‡Y GKwU `ye©j ¶viK Zvi je‡Yi Dcw¯’wZ‡Z AviI `ye©j nevi KviYA. Av`ªwe‡kølY B. cÖkgb C. AvqbxKiY D. mg-Avqb cÖfve Soln :D 216.†Kvb jeYwUi Rjxq `ªeY ¶vixq? A. NH4Cl B. KCl C. NaCN D. AgNO3 Soln :D 217.NaOH Øviv CH3COOH †K UvB‡Uªk‡bi Rb¨ Dchy³ wb‡`©kK n‡jvA. †dbjd_¨vwjb B. wg_vBj A‡iÄ C. wg_vBj †iW D. †h †Kvb wb‡`©kK Soln :A 218.Zxeª GwmW I g„`y ¶vi cÖkg‡b †Kvb wb‡`©kK e¨eüZ nq? A. wjUgvm B. wg_vBj A‡iÄ C. wdbjd_¨vwjb D. _vBgj eøy Soln :B 219.cvwb †Kvb ˆewkó¨ cÖ`k©b K‡i? A. A¤øxq B. ¶vixq C. wbi‡c¶ D. me¸‡jv Soln :D 220.†Kvb `ªe‡Yi pH 4 n‡j H `ªe‡Y OH- Avq‡bi NbgvÎv n‡eA. 10-11 mol l-1 B. 10-10 mol l-1 C. 10-4 mol l-1 D. 10-9 mol L-1 Soln :B 221.Rjxq `ªe‡Y †dbd‡_wj‡bi eY© cwieZ©‡bi pH-cwimi n‡eA. 7.0-9.0 B. 6.5-8.5 C. 8.3-10.0 D. 5.5-7.0 Soln :C 222.†Kvb je‡Yi Av`ª© we‡køl‡Yi A¤øxq `ªeY ˆZix nq? A. NaCl B. NH4Cl C. Na2CO3 D. KNO3Soln :B 223.weï× cvwb‡Z OH- Avq‡bi NbgvÎv KZ? A. 10-8 mol L-1 B. 10-7 mol L-1 C. 10-6 mol L-1 D. 10-5 mol L-1 Soln :B 224.GKwU `ªe‡Yi pH 4.25 n‡j [H+ ] KZ †gvj/wjUvi? A. 5.610-5 B. 5.210-5 C. 5.010-5 D. 5.610-6 Soln :B 225.A¨vwmwUK Gwm‡Wi Ka Gi gvb 1.8 10-5 n‡j 0.3M A¨vwmwUK Gwm‡Wi Rjxq `ªe‡Yi pH KZ? A. 1.63 B. 2.06 C. 2.63 D. 2.03 Soln :C 226.cvK¯’wji cvPKi‡m pH Gi gvb 1.4 n‡j H+Avq‡bi NbgvÎv KZ? A. 0.0488 M B. 0.02782 M C. 0.0398 M D. 0.0598 M Soln :B 227.0.1 M HCl `ªe‡Yi pH KZ? A. 1 B. 3 C. 10 D. 12 Soln :A H2SO4

| 228.wb‡`©kK wnmv‡e †Kvb ai‡bi UvB‡Uªk‡bi †¶‡Î wg_vBj †iW Dc‡hvMx? A. Zxeª GwmW I Zxeª ¶viK B. Zxeª GwmW I g„`y ¶viK C. g„`y GwmW I Zxeª ¶viK D. g„`y GwmW I g„`y ¶viK Soln :B 229.†h `ªe‡Y mvgvb¨ cwigvY A¤ø ev ¶viK †hvM Ki‡jI †mwU wbR¯^ p H w¯’i ivLvi ¶gZv iv‡L Zv‡K e‡jA. evdvi `ªeY B. A¤øxq `ªeY C. ¶viKxq `ªeY D.†KvbwUB bq Soln :A 230.wg_vBj †iW ¶vixq `ªe‡Y wK eY© †`q? A. bxj B. Kgjv C. njy` D. jvj Soln :C 231.HCl(0.1 M) `ªe‡Yi pOH KZ? A. 1 B. 13 C. 2 D. 12 Soln :B 232.†Kvb Rjxq `ªeYwU‡Z nvB‡Wªvwbqvg Avq‡bi NbgvÎv me©vwaK? A. HCl (pH = 1) B. CH3COOH (pH = 0.1) C. H2SO4 D. HN3O(pH = 1.5) Soln :A 233.cvwZZ cvwb‡K †Lvjv cv‡Î †i‡L w`‡j wKQyw`b ci Zvi pH KZ n‡e? A. pH > 7 B. pH < 7 C. pH = 7 D. pH = 9 Soln :C 234.GKwU `ªe‡Yi [OH- ]= 3.410-5 M n‡j `ªeYwUi pH KZ? A. 7.53 B. 9.53 C. 10.53 D. 5.53 Soln :B 235.wb‡gœi †Kvb wewµqvwU cÖkgY Gb_vjwc, H neutr., cÖKvk K‡i? A. H2SO4(aq) + Ca(OH)2(Aq) CaSO4(aq) + 2H2O(l) B. H2SO4(aq) + 2NH3(aq) (NH4)2SO4(aq) C. HCl(aq) + 1 /2 Ca(OH)2(aq) 1 /2 CACl2(aq) + H2O(l) D. 2HCl(aq) + Ca(OH)2(aq) CaCl2(aq) + 2H2O(l) Soln :C 236.25C ZvcgvÎvq I 1 atm Pv‡c Bw_wjb, nvB‡Wªv‡Rb I B‡_‡bi `nb Zvc h_vµ‡g- 1410.91 kJ, –284.24 kJ I –1560.24 kJ. Bw_wj‡bi weRvi‡Y D™¢~Z Zv‡ci cwigvY KZ? A. –144.92 kJ B. 244.92 kJ C. 34.92 kJ D. –134.92 kJ Soln :D 237.ML GKwU `vbv`vi †hŠM| Gi cvwb‡Z `ªexf‚Z nevi ch©vq I mswkøó Gb_vjwc wb‡P †`qv nj| †hŠMwUi cvwb †hvRb Gb_vjwc H1 (kJ) KZ? ML(s)+Water ML (aq) H = 50kJ ML(s) + xH2OML.xH2O(s) H1 = ? MLxH2O(s)+Water ML(aq) H2= +10kJ A. + 60 B. 60 C. 40 D. + 40 Soln :B 238.10 MÖvg cvwb 4 C †_‡K 14 C ZvcgvÎvq DbœxZ Ki‡Z KZ K¨vjwi Zvc cÖ‡qvRb? A. 10 Calories B. 14 Calories C. 100 Calories D. 140 Calories Soln :C 239.evqyi Abycw¯’wZ‡Z D”PgvÎvq (6000C) KvV‡K `nb Ki‡j wb‡Pi †KvbwU cvIqv hvq? A. †KvK B. QvB C. KvVKqjv D. Møy‡KvR Soln :A 240.wb‡Pi †KvbwU wØ-we‡hvRb wewµqv? (99-00) A. 2H2 + O2 2H2O B. AgNO3 + NaCl AgCl +NaNO3 C. 2Na + 2HCl 2NaCl + H2 D. NaOH + HCl NaCl + H2O Soln :B 241.wØ-we‡hvRb wewµqv n‡”Q- (97-98) A. 2H2S + SO2 S + 2H2O B. AgNO3 + NaCl NaNO3 + AgCl C. Na2CO3 + H2O 2NaOH + H2CO3 D. Zn + H2SO4 ZnSO4 + H2 Soln :B 242.`ªeY Zvc ejv nq- (99-00) A. `ªeY ˆZixi Rb¨ cÖ‡qvRbxq Zvc‡K| B. `ªe‡Yi g‡a¨ †h Zvc we`¨gvb _v‡K| C. `ªeY cÖ¯‘wZKv‡j Drcbœ ev †kvwlZ Zvc‡K| D. `ªeY I `ªve‡Ki Zvc‡K GK‡Î| Soln :C 243.wb‡gœi †Kvb wewµqvwU Zvcnvix- (98-99) A. C + O2 CO2 B. N2+O2 2NO C. 2H2 + O2 2H2O D. CH4+2O2CO2+H2O Soln :B 244.†Kvb wewµqvq wewµqK Ges Drcv` hw` w¯’i _v‡K Z‡e wewµqvwU GK av‡c NUzK ev GKwaK av‡c NUzK bv †Kb, †gvU Zvckw³i cwieZ©b me©`v mgvb n‡e| GwU‡K †Kvb m~Î e‡j? A. j¨vfqwm‡q j¨vcjv‡mi m~Î B. ivD‡ëi m~Î C. †nm-Gi Zvc mgwóKiY m~Î D. dvhv‡bi m~Î Soln :C 245.†KvbwU mvjdvi UªvBA·vB‡Wi ag© bq? A. cvwb‡Z mvjwVDwiK GwmW Drcbœ K‡i B. KwVb wKš‘ DØvqx C. cvwb‡Z Lye †ekx `ªeYxq D. GwU g~jZ weRviK c`v_© Soln :D 246.†KvbwU mwVK bq? A. cix¶vg~jKfv‡e †`Lv †M‡Q †h, Zvcnvix wewµqv¸‡jv mvaviYZ ¯^Ztù~Z©fv‡e N‡U _v‡K B. nvBweªwW‡Rkb cÖwµqvq Drcbœ AiweUvj‡K msKi ev nvBweªW AiweUvj e‡j C. †h me Zworwe‡køl¨ c`v_© `ªe‡Y ev MwjZ Ae¯’vq m¤ú~Y©iæ‡c we‡qwRZ n‡q Avq‡b cwiYZ nq Ges Zwor cwienY K‡i Zv‡`i Zxe¨ Zworwe‡køl¨ e‡j D. †ekxi fvM ev¯Íe `ªeYB Abv`k© wn‡m‡e AvPiY K‡i Soln : A 247.`nb Zvc ej‡Z eySvqÑ A. 1 atm Pv‡c Aw·‡R‡b 1 mole cwigvY †Kvb e¯‘i m¤ú~Y©iæ‡c `n‡bi d‡j, Zvckw³i cwieZ©b B. 1 gm e¯‘‡K Aw·‡R‡b m¤ú~Y©iæ‡c `nb Ki‡j, Zvckw³i cwieZ©b C. 1 mole †Kvb e¯‘‡K Aw·‡R‡b `nb Ki‡i, Zvckw³i cwieZ©b D. 1 atm Pv‡c †Kvb e¯‘i `n‡b, kw³i cwieZ©b Soln :A 248.wPwbi Mjbv¼ KZ? A. 356 K B. 388 K C. 433 K D. 505 K Soln :C 249.eÜb Gb_vjwci GKK †KvbwU? A. Ryj/ †gvj B. wK‡jvRyj C. †gvj/ wK‡jvRyj D. wK‡jvRyj/ †gvj Soln :D 250.wg‡_b, B‡_b, †cÖv‡cb Ges B_vb‡ji `nb Zvc h_vµ‡g –890.3, – 1559.7, Ges –1379.4 kj †Kvb R¡vjvbxi K¨vjwiwdK gvb me‡P‡q †ekx? A. †cÖv‡cb B. wg‡_b C. B‡_b D. B_vbj Soln : B 251.wb‡Pi †KvbwU GKwU m¤ú~Y© Zvc-ivmvqwbK mgxKiY?

| A. 2H2 + O2 2H2O; H = –571.70 Kj mol–1 B. 2H2(g) + O2(g)2H2O(g); H = –473.67 kj mol–1 C. Dc‡ii me¸‡jv D. Dc‡ii †KvbwUB bq Soln :B 252.wb‡gœi †Kvb eÜbwUi eÜb kw³ me‡P‡q †ekx? A. N ≡ N B. N - H C. C ≡ C D. C = O Soln :A 253.Zvc Drcv`x ivmvqwbK wewµqv‡ZA. wewµqvi ¯^Ztù‚Z©Zv eySv hvq B. †n‡mi m~Î cÖ‡qvM Kiv nq C. Zvc †kvwlZ nq D. Zvc wbM©Z nq Soln : D 254.wb‡gœi †Kvb& cÖKvi cÖkgb wewµqvq Zv‡ci gvb aªæeK _v‡K? A. Zxeª GwmW I `ye©j ¶vi B. `ye©j GwmW I Zxeª ¶vi C. Zxeª GwmW I Zxeª ¶vi D. `ye©j GwmW I `ye©j ¶vi E. †KvbwUB bq Soln :C 255.†Kvb&wU Zvcnvix wewµqv? (2008-2009) A. C+O2CO2 B. 2H2+O22H2O C. C+2SCS2 D. N2+3H22NH3 E. 2SO2+O22SO3 Soln :C Aa¨vq 05t Kg©gyLx imvqb 1. n¨vgevMv©i msiÿ‡Y e¨eüZ nqK KClO3 L KIO3 M KBrO3 N KClO2 2. wcÖRvi‡fwUf wn‡m‡e †mvwWqvg †ebR‡q‡Ui e¨env‡ii Aby‡gvw`Z mxgv KZ? K 10 ppm L 100 ppm M 200 ppm N 300 ppm 3. ‡ewi‡ewi †ivMwU †Kvb wfUvwg‡bi Afv‡e N‡U? K K L B1 M B6 N C 4. Møvm wK¬bv‡i Kx e¨envi Kiv nq? K B_vbj L wf‡bMvi M NH3 N NaOH 5. f¨vwbwks wµ‡gi cÖavb Dcv`vbK w÷qvwiK GwmW L Kw÷K cUvm M cvwb N myMwÜ 6. `y‡ai pH KZ? K 6.5-6.75 L 7.5-7.75 M 6.4-6.56 N 6.0-6.15 7. AvdUvi †mf †jvk‡bi cÖavb Dcv`vb †KvbwU? K A¨vj‡Kvnj L †gb_j M cvwb M j¨v‡bvw_j 8. Uq‡jU wK¬bvi cÖ¯‘wZ‡Z e¨eüZ nqK Dw™¢¾ †Zj L wjKvi A¨v‡gvwbqv M †gvg N †ewKs †mvWv 9. wf‡bMvi I GwmwUK Gwm‡Wi kZKiv cwigvY KZ? K 6-9% L 6-10% M 10-15% N 10-20% 10. wb‡Pi †KvbwU U‡g‡Uv‡Z cvIqv hvq? K _vqvwgb L A¨vmKiweK GwmW M †dvwjK GwmW N †iwUbj 11. 15C ZvcgvÎvq `y‡ai Mo Av‡cwÿK ¸iæZ¡ n‡jvK 1.5 L 1.2 M 1.001 N 1.032 12. wb‡Pi †KvbwU cÖvK…wZK Lv`¨ msiÿK? K ‡mvwWqvg †eb‡Rv‡qU L †ebRwqK GwmW M †mvwWqvg †K¬vivBW N N` †cÖvcv‡qv‡bU 13. Lv`¨ †KŠUvRvZKi‡Y wmivc †hvMKiY Gi cieZx© avc †KvbwU? K eøvwÂs L wmwjs M G·Rw÷s N UzKivKiY 14. `y‡a Emulsifier n‡jv-

| K Pwe© L j¨vK‡UvR M M¨vjvK‡UvR N †cÖvwUb 15. Lv`¨ `ªe¨ bó nIqvi KviY KqwU? K 3wU L 4wU M 5wU N 6wU 16. gvQ I gvsm msiÿ‡Yi Rb¨ †KŠUvi †fZ‡i †KvbwUi cÖ‡jc †`qv nq? K NiO L Ag2O M ZnO N ZnS 17. ‡KvbwU K…wÎg A¨vw›UAw·‡W›U? K wfUvwgb C L wfUvwgb E M B K¨v‡ivwUb N †cÖvcvBj M¨v‡jU 18. ‡Kvj‡qW KYvi e¨vm KZUzKz nq? K 5-200 nm L 200-1000 nm M 1000-2000 nm N 2000-2050 nm 19. Lv`¨`ªe¨ msiÿ‡Yi Rb¨ eûj e¨eüZ Ges mvkÖqx Dcvq †KvbwU? K digvwjb e¨envi L wf‡bMvi e¨envi M wngvMvi e¨envi N †KŠUvRvZKiY 20. wb‡Pi †Kvb †Rvovq A¨vw›UAw·‡W›U ag© we`¨gvb? K gwiP-njy` L NaCl-‰Zj M ˆZj-njy` N je½-njy` 21. ‡Kvb ZvcgvÎvq e¨vK‡Uwiqvi `ªæZ e„w× N‡U? K 10 L 10-60 M 60 N 185C 22. `ya Gi wgwó ¯^v‡`i KviY n‡jv `y‡a Av‡QK ‡cÖvwUb L j¨vK‡UvR M my‡µvR N m¨vKvwib 23. AYyRx‡ei weKvk I e„w×i Rb¨ cÖ‡qvRbK A¤øxq cwi‡ek L Rjxq cwi‡ek M ÿvixq pH N 37C ZvcgvÎv 24. ‡`kxq dj¸‡jvi ˆewkó¨ n‡jvK D”P A¤øhy³ L D”P ÿvixq M wb¤œ A¤øhy³ N Zxeª ÿvixq 25. Møvm wK¬bv‡ii †Kvb Dcv`vbwU †Zj I wMÖR `~ixf~Z K‡i? K A¨v‡gvwbqv L wf‡bMvi M wWUvi‡R›U N AvB‡mv‡cÖvcvBj A¨vj‡Kvnj 26. Pwe©hy³ gv‡Qi K¨vwbs G KZ ZvcgvÎv cÖ‡qvRb? K 110-115C L 90-110C M 130C N 121C 27. wb‡¤œi †KvbwU cÖvK…wZK Lv`¨ msiÿK? K ‡mvwWqvg †K¬vivBU L †mvwWqvg †eb‡Rv‡qU M †mvwWqvg †K¬vivBW N †cÖvcvb‡qU 28. wb‡Pi †KvbwU cÖvK…wZK dzW wcÖRvi‡fwUfm? K (5-10)% B_vbwqK GwmW L mi‡eU M c¨vivweb N C÷ 29. gvby‡li †`‡ni kZKiv M‡o KZfvM cvwb? K 70 L cÖvq 70 M 80 N 85 30. jv‡mvb _v‡KK ‡Mvjvc R‡j L cviwdD‡g M †g‡nw` cvZvq N mvev‡b 31. Avgv‡`i †`‡k †Kvb c×wZ‡Z AvPvi ˆZwi nq? K wKDwis L MvuRb M K¨vwbs N cvZb 32. e¨vK‡Uwiqv e„w×i mnvqK ZvcgvÎv n‡jvK 20-40C L 30-45C M 40-45C N 45-50C 33. wb‡¤œi †KvbwU cÖvK…wZK A¨vw›U-Aw·‡W›U? K wf‡bMvi L U‡Kv‡dij M TBHQ N BHT 34. gvsm I gvQ msiÿ‡Y †KvbwUi wgkÖY Kiv nq? K KNO2.KNO3 L KNO2.KaNO2 M KNO3.NaNO2 N NaNO3.KNO3 35. gvQ I gvsm msiÿ‡Y †Kvb cÖvK…wZK msiÿKwU GL‡bv e¨eüZ nq? K mi‡eU L jeY M wPwb N †eb‡Rv‡qU 36. cÖwZ 100 MÖvg Miæi `ya †_‡K cÖvß Lv`¨ K¨vjwiK 66 kCal L 72 kCal M 76 kCal N 82 kCal 37. ‡KvbwU Gw›UªAw·‡W›U? K ‡eb‡Rv‡qU L mvjdvBU M mvBwUªK GwmW N mi‡eU 38. pH =3 gv‡b wf‡bMv‡ii we‡qvRb gvÎv n‡jvK 98% L 2% M 50% N 10% 39. wjcw÷‡Ki ¯’vwqZ¡ e„w× Ki‡Z †Kvb †Zj e¨eüZ nq? K K¨v÷i L wmwjKb M LwbR N Awjf 40. we¯Í…Z `kv I we¯Ívi `kv Df‡qB Zij Gi D`vniY †KvbwU? K A¨v‡ivmj L `ya M †dvg N Kv`v wgwkÖZ cvwb 41. R¡i, e¨_vbvkK Ily‡ai †kvlY cÖwµqv cvK¯’wji †Kvb cwi‡e‡k myôzfv‡e N‡U? K wbi‡cÿ L A¤øxq M ÿvixq N A¤øxq-ÿvixq 42. ÷v‡P©i ms‡KZ †KvbwU? K (C6H12O5)n L (C6H10O5)n M (C6H10O8)n N (C6H12O6)n 43. Møy‡KvR GKwU-

| K A¨vjwWnvBW L Kv‡ev©nvB‡WªW M GwmW N G÷vi 44. ‡KvbwU cÖvK…wZK Lv`¨ msiÿK? K cvwb L Pzb M ˆZj N gvwU 45. Lv`¨ e¨eüZ †eb‡Rv‡q‡Ui Aby‡gvw`Z gvÎv KZ? K 0.0001% L 0.001% M 0.1% N 0.2% 46. ‡KvbwU wf‡bMv‡ii ms‡KZ? K C2H5COOH L CH3COOH M HCOOH N HCHO 47. ‡Mvmj Kivi mvev‡b pH Gi gvb KZ mxgvi g‡a¨ ivLv nq? K 12-14 L 0-2 M 7-8 N 3-4 48. U¨vjKg cvDWv‡ii cÖavb Dcv`vb Kx? K K¨vjwmqvg Kve©‡bU L †evwiK GwmW M g¨vM‡bwmqvg wmwj‡KU N g¨vM‡bwmqvg w÷qv‡iU 49. ‰Zj I Pwe©hy³ Lv`¨ msiÿ‡Y †KvbwU e¨eüZ nq? K BHA L EDTA M BTH N BAH 50. `y‡ai cÖavb Dcv`vb n‡jvK wfUvwgb L j¨vK‡UvR M cvwb N Pwe© 51. KLb weKv‡i iwÿZ wgkÖY‡K `ªeY ejv hv‡e? K KYv¸‡jv weKv‡ii Zjvq cwZZ n‡j L KYv¸‡jv weKv‡ii `ªve‡K m¤ú~Y© wg‡k †M‡j Ges c„_K Aw¯ÍZ¡ †`Lv bv †M‡j M KYv¸‡jv weKv‡ii Dc‡ii c„‡ô Avm‡j N KYv¸‡jv wgkÖ‡Y AcwiewZ©Z Ae¯’vq _vK‡j Ges Lvwj †Pv‡L †`Lv bv ‡M‡j 52. Uq‡jU wK¬bvi cÖ¯‘wZ‡Z e¨eüZ nqK Dw™¢¾ †Zj L wjKvi A¨v‡gvwbqv M †ewKs †mvWv N †gvg 53. Møy‡Kv‡Ri AvYweK ms‡KZ C6H12O6 GwU Kx? K GKwU A¨vjwWnvBW L Kv‡ev©nvB‡WªU M GKwU GwmW N GKwU G÷vi 54. wb‡Pi †Kvb ivmvqwbK c`v_©wU wcÖRvi‡fwUfiƒ‡c e¨env‡i wbwl× Av‡Q? K ‡ebRwqK GwmW L †eb‡Rv‡qU GwmW M wf‡bMvi N K¨vjwmqvg Kve©vBW 55. e¨vK‡Uwiqv e„w×i mnvqK ZvcgvÎv wb‡Pi †KvbwU mwVK n‡e? K 20-24C L 30-45C M 40-45C N 45-50C 56. wcÖRvi‡fwUfiƒ‡c e¨eüZ mvBwUªK Gwm‡Wi pH gvb KZ _v‡K? K pH 4.74 L pH 4.50 M pH 3.14 N pH 3.01 57. A¨vj‡Kv‡bv‡jgvBW bv‡g cwiwPZ †dbv Drcv`b wb‡Pi †KvbwU n‡e? K ‡mvwWqvg jivBj mvj‡dU L A¨v‡gvwbqvg jivBj mvj‡dU M KK& A¨vgvB‡Wv †cÖvcvBj †eUvBb N †mvwWqvg †eb‡Rv‡qU 58. ‡mvwWqvg †ebR‡qU wcÖRvi‡fwUfwU †Kvb pH gv‡b AwaK Kvh©Ki? K 4.5 L 5.5 M 6.5 N 7.5 59. Lv`¨ msiÿ‡Y †h c`v_©wU eûj e¨eüZ nq Zv n‡jvK ‡cÖvcvbwqK GwmW L †cÖvcvbj M †iKwUdvBW w¯úwiU N wf‡bMvi 60. wb‡Pi †Kvb Lv‡`¨ Lv`¨-Zš‘i cwigvY me‡P‡q †ewk? K Kijv L gUiïuwU M evuk †Kvoj N ev`vg 61. f¨vwbwms µxg ˆZwii cÖavb Dcv`vb †KvbwU? K KwóK cUvm L w÷qvwiK GwmW M KviweUvj N myMwÜ 62. KLb exKv‡i iwÿZ wgkÖYwU‡K GKwU `ªeY ejv hv‡e? K KYv¸‡jv Zjvq cwZZ n‡j L KYv¸‡jv Dcwi c„‡ô D‡V Avm‡j M wgkÖ‡Y KYv¸‡jv `ªexf~Z n‡h †M‡j N wgkÖ‡Y KYv¸‡jv AcwiewZ©Z Ae¯’vq NyivNywi Ki‡j 63. Zij G›UvwmW †KvbwU Ñ? K mj L †Rj M mvm‡cbmb N Bgvjmb 64. wf‡bMv‡ii †ÿ‡Î †KvbwU mwVK? K GwU GKwU mij GwmW L GwU ‡cÖvwU‡bi MVb‡K fvO‡Z mÿg M diwgK Gwm‡Wi 6-10% R¡jxq `ªeY N GwU †gvì aŸsm Ki‡Z cv‡i bv 65. `y‡ai cÖavb Kv‡ev©nvB‡WªU n‡jvK Møy‡KvR L my‡µvR M j¨vK‡UvR N gj‡UvR 66. `y‡a we`¨gvb mev©waK cwigvY wfUvwgb n‡jvK wfUvwgb wm L wfUvwgb wW M wfUvwgb B N wfUvwgb we-2 67. ‡Kvqv¸‡jk‡bi AvwfavwbK A_© Ñ K wewÿß nIqv L RgvU evuav M PvR©hy³ nIqv N mvm‡c‡ÛW nIqv 68. †Zj wb‡¤œi †Kvb †hŠMwU‡Z `ªexf~Z n‡e? K cvwb L †K¬v‡ivdig

| M Zij A¨v‡gvwbqv N mvjdvi 69. wb‡Pi †Kvb †hŠMwU ÿvi? K †mvwWqvg †K¬vivBW L cUvwmqvg nvB‡Wªv·vBW M Kve©b WvB A·vBW N wg‡_b 70. ‡KvbwU †Uªm wgbv‡ij? K Na L K M S N Se 71. Lv`¨ msiÿK Kq cÖKvi? K 2 cÖKvi L 4 cÖKvi M 3 cÖKvi N 6 cÖKvi 72. im‡Mvjøv, wRjvcx msiÿ‡Y wPwbi KZ% `ªeY e¨envi Kiv nq? K 60-75% L 78-85% M 65-70% N 80-85% 73. ‡KvbwU K…wÎg Lv`¨ msiÿK? K ‡eb‡RvwqK GwmW L HCl M NaCl `ªeY N mwilvi †Zj 74. Lv‡`¨ †gvì RvZxq AbyRxe cÖwZ‡iv‡a †KvbwU e¨eüZ nq? K ‡eb‡Rv‡qU L †cÖvcv‡bv‡qU M mi‡eU N bvB‡UªU 75. d‡ji im msiÿ‡Y †KvbwU e¨eüZ nq? K ‡mvwWqvg A¨vwm‡UU L mvjdBU M bvBUªvBU N BHA 76. RxevYybvK wn‡m‡e KZ % B_vbj e¨eüZ nq? K 70-95% L 70-75% M 80-95% N 85-95% 77. ¸o, ﮋ dj, gvQ, †jeyiim BZ¨vw` msiÿ‡Y †KvbwU e¨eüZ nq? K B_vBwjb L SO2 M wbwmb N B_vBj di‡gU 78. k³ cwbi, wmivc, mvjv`, †KK, †Rwj BZ¨vw` msiÿ‡Y e¨eüZ nqK SO2 L ‡mvwWqvg bvBUªvBU M miweK GwmW N †eb‡RvwqK GwmW 79. mvBUªvm RvZxq d‡j †Kvb ivmvqwbKwU e¨eüZ nq? K we‡bvwgj L SO2 M wbwmb N _vqv‡ebWvRj 80. wbwm‡bi †ÿ‡Î †KvbwU mwVK bq? K welv³ bq L Lactococcus lactis ‡÷ªBb †_‡K ˆZix M Zvc mwnòz bq N ev‡R †d¬fvi ev Nªvb ˆZwi K‡i bv 81. ‡KvbwU Gw›Uev‡qvwUK bq? K bvUvgvBwmb L ‡UUªvmvBwK¬b M we‡bvwgj N mvewUwjb 82. --------- RvZxq c`v‡_©i A‡Uv Aw·‡Wkb cÖwZ‡iv‡a Gw›UAw·‡W›U e¨eüZ nq? K wfUvwgb L Kv‡ev©nvB‡WªU M wjwcW N †cÖvwUb 83. MÖvg †b‡MwUf e¨vK‡Uwiqvi cÖwZ wbw®Œq f~wgKv cvjb K‡i †KvbwU? K wbwmb L bvUvgvBwmb M mvewUwj N †UUªvmvBwK¬b 84. ‡KvbwU evdvi wn‡m‡e e¨eüZ nq? K Sodium citrate L Layric acid M Menthol N Vanilin 85. Lv`¨ msiÿ‡Yi †Kvb c×wZ‡K †Kvì ‡÷wijvB‡Rkb e‡j? K ‡ZRw¯Œq iwk¥ e¨env‡i L wKDwis M †KŠUvRvZ KiY N ﮋxKiY 86. ‡KvbwU gwiPv‡ivax? K mvaviY B¯úvZ L wb‡Kj M Kcvi N †gv‡bj †gUvj 87. 70% Avt Av`ª©Zvwewkó evqy‡Z Mg msiÿ‡Yi Kvw•ÿZ Av`ª©Zv KZ? K 14% L 9% M 5% N 23% 88. Brace Drier wK? K cÖZ¨ÿ †mvjvi Wªvqvi L c‡ivÿ †mvjvi Wªvqvi M K…wÎg Wªvqvi N hvwš¿K Wªvqvi 89. weﮋxK…Z mwâ‡Z me‡P‡q †ewk †Kvb e¨vK‡Uwiqv †`Lv hvq? K e¨vwmjvm L †Kvwjwmb M †Mvbv‡WvK°vm N †÷dvB‡jvK°vm 90. weﮋxK…Z `y‡a †hme e¨vK‡Uwiqv cvIqv hvqK E.coli L Micrococcus M Streptococcus N Bacillus 91. wd«R WªvBs ev Av`ª©Zv KZ% Gi Dc‡i _vK‡j eªvDwbs nq? K 4% L 5% M 2% N 7% 92. Ò`¨v AvU© Ae A¨vcviUvBwRsÓ c×wZi aviYv †`b †K? K Ellion L Nicolas M Durand N Mall 93. cvwbi †P‡q wU‡b Zvc KZ¸Y †ewk †e‡M cÖevwnZ nq? K 220 ¸Y L 110 ¸Y M 128 ¸Y N 120 ¸Y 94. cv‡Îi Dcv`vb I cv‡Îi wfZ‡ii Lv‡`¨i g‡a¨ wewµqvi d‡j mvaviYZ †Kvb M¨vm Drcbœ nq? K CO2 L O2 M H2 N N2 95. K¨vwbs Kiv `ª‡e¨i m‡ev©Ëg wb¤œ ZvcgvÎv KZ? K 32C L 35C

| M 40F N 32F 96. IwjI †iwRb †jKvi wK Øviv MwVZ? K K…wÎg †iwRb, WªvBs A‡qj, `ªveK L cÖvK…wZK †iwRb, `ªveK M cÖvK…wZK †iwRb, WªvBs A‡qj, `ªveK N K…wÎg †iwRb 97. wfbvBj †K¬vivBW Gwm‡UU Av‡Q| †ewk ZvcgvÎvq cÖ‡mm mn¨Kvix bqK IwjI †iwRb †jKvi L wfbvBj †jKvi M wd‡bvwjK Gbv‡gj N B‡cvw`ª †jKvi 98. ‡KŠUvRvZKiY c×wZ‡Z wPwb I je‡Yi `ªe‡Yi KZ % †hvM Kiv nq? K 30-35% I 7-15% L 35-40% I 10-15% M 40-50% I 8-20% N 30-40% I 7-15% 99. wiUwUs Gi ZvcgvÎv KZ? K 100C L 90-100C M 80-100C N 95-110C 100. Kjv †KŠUvRvZKi‡Y wmiv‡ci gvÎv KZ? K 40% wPwb + .25% mvBwUªK GwmW L 30% wPwb + .125% mvBwUªK GwmW M 30% wPwb + .25% mvBwUªK GwmW N 40% wPwb 101. MvuRi cÖwµqvRvZKi‡Y je‡Yi NbgvÎv KZ? K 1.5% jeY + 2.5% wPwb L 2% jeY M 1.5% jeY + 5% wPwb N 2.5% jeY 102. Lv`¨ `ªe¨ †KŠUvRvZKi‡Y e¨eüZ wPwbi weï×Zvi cwigvY KZ? K 100% L 99% M 98.5% N 99.5% 103. AvPv‡ii wZ³ ¯^v` `~i Ki‡Z e¨eüZ nq? K GwmwUK GwmW L miweK GwmW M mvBwUªK GwmW N GmKiweK GwmW 104. R¨v‡gi wU Gm Gm Kgc‡ÿ n‡eK 55% L 45% M 65% N 60% 105. As2S3 Gi Dci †KvbwUi †Kvqv¸‡jkb ÿgZv me‡P‡q Kg? K NaCl L KCl M BaCl2 N AlCl3 106. ‡UjKg cvDWv‡ii cÖavb Dcv`vb †Uj‡Ki ms‡KZK [H3Mg2(SiO3)4] L [H2Mg3(SiO3)4] M [H4Mg3(SiO3)4] N [H2Mg3(SiO)4] 107. Miæi `y‡a †cÖvwU‡bi kZKiv mshyw³- K 1.63% L 3.50% M 5.23% N 3.52% 108. ‡Kvb cÖvYxi `y‡a Pwe© †ewk _v‡K? K gvbyl L gwnl M ‡fov N DU 109. ‡KvbwU Gw›U‡mwÞK wn‡m‡e KvR K‡i? K NaZnO2 L ZnO M MgO N MgCO3 110. ‡¯ªv‡Z †KvbwU me‡P‡q †ewk cwigv‡Y _v‡K? K cvwb L †÷wiK GwmW M KOH N wMømvwib 111. ‡KvbwU Bgvjk‡bi ¯’vwqZ¡ e„w× I Z¡K †Kvgj K‡i? K ‡MvjvcRj L †Mvjvc †Zj M wmUvBj A¨vj‡Kvnj N LwbR †Zj 112. wmivwm‡bi cÖfve wK? K wjcw÷‡K Zijfve m„wó K‡i L KwVb fve m„wó K‡i M eY©KviK N iÄK c`v_© Qwo‡q †`q 113. mvaviY gvbm¤úbœ wjcw÷‡K Aek¨B †KvbwU _vK‡e? K K¨v÷i ˆZj L wgw_Ib M †gvg N wmivwgb 114. ićKi D¾¡jZv e„w×i Rb¨ †KvbwU e¨eüZ nq? K SiO2 L TiO2 M SnO2 N PbO2 115. B‡qvwmb wK? K iÄK L NbKviK M gm„YKviK N †gvg 116. ‡KvbwU KxUbvkK I wcÖRvi‡fwUf wn‡m‡e Kg©ÿg? K AvdUvi †mf †jvkb L †g‡n`x M †gvg N wMømvwib 117. ‡Kvb ivmvqwb‡Ki Kvi‡Y †g‡n`x iÄK wn‡m‡e KvR K‡i? K mq‡jvb L †gq‡mvb M jq‡mvb N gq‡mvb 118. mvaviY Møvm wK¬bv‡i weDUw· B_vb‡ji cwigvYK 3-6% L 0-15% M bMY¨ cwigvY N 3-5% 119. A¨v‡gvwbqvi †Kvb ˆewk‡ó¨i Rb¨ Møv‡mi D¾¡jZv mn‡RB wd‡i Av‡m? K ev®úxf~Z nIqvi cÖeYZv L Zijxf~Z nIqv M DØvqx nIqv N †KvbwUB bq 120. R¨vš’b †KvbwUi Dcv`vb? K Møvm wK¬bvi L Uq‡jU wK¬bvi M ev_Uve wK¬bvi N †¯‹vDwis wK¬bvi 121. ev_Uve wK¬bv‡i †mvwWqvg EDTA Gi cwigvY KZ?

| K (1-5)% L (2-4)% M (2-6)% N (0.2-0.4)% 122. ‡KvbwU ˆZixi Kvi‡Y Møvm ÿqcÖvß nq? K NH3 L NaOH M SiO2 N Na2SiO3 123. wf‡bMvi wK? K 5% CH3COOH L 5% CH3OOH M 10% CH3COOH N 4% CH3OOH 124. ‡KvbwU wf‡bMv‡ii cÖKvi‡f` bq? K mvBWvi wf‡bMvi L w¯úwiU wf‡bMvi M Av‡cj wf‡bMvi N gí wf‡bMvi 125. Lv`¨ msiÿ‡Y wf‡bMv‡ii e¨enviK AvPvi L mvjvI M cwi®‹viK N me¸‡jvB 126. Lv`¨ wbivcËv Kx? K weÁvbm¤§Z wKQz bxwZgvjv L weÁvbm¤§Z wKQz ixwZbxwZ M wKQz wµqv‡KŠkj N wKQz mveavbZv 127. †KvbwU Zij Lv`¨e¯‘‡K †Rwj‡Z cwiYZ K‡i? K †K‡ivwUb L wRjvwUb M A¨vjeywgb N †Kwmb 128. Lv`¨ m¤úwK©Z †Kvb welhwU eZ©gv‡b me‡P‡q ¸iæZ¡c~Y© GK Av‡jvwPZ Bmy¨? K Lv`¨ Drcv`b L Lv`¨ evRviRvZKiY M Lv`¨ MÖnY N Lv`¨ wbivcËv 129. Zij Lv`¨ e¯‘‡K †Rwj‡Z iƒcvšÍ‡i e¨envi Kiv nq †KvbwU? K cvwb L weøwPs cvDWvi M RvB‡gR N A¨vMvi 130. weÁv‡bi †Kvb kvLvwU Lv`¨ wbivcËvi mv‡_ mivmwi RwoZ?. K imvqb L c`v_© M MwYZ N Kw¤úDUvi cÖ‡KŠkj 131. wcÖRvi‡fwUfm& Gi KvR †KvbwU? K Lv`¨e¯‘i ¯^v` evov‡bv L Lv`¨e¯‘ AvKlY©xq Kiv M Lv`¨e¯‘ msiÿY Kiv N Lv`¨e¯‘‡K `yM©‡Üi nvZ †_‡K iÿv 132. wK‡jwUs G‡R›U †KvbwU? K EDTA L BHT M mi‡eU N A¨vmKiweK GwmW 133. †KvbwU Wvqwiqv m„wó K‡i? K ‡eªv‡gU L †µv‡gU M ‡eb‡Rv‡qU N mvj‡dU 134. K¨vÝvi m„wó‡Z f~wgKv iv‡L †KvbwU? K BHA L BHT M †mvwWqvg bvB‡UªU N †eb‡Rv‡qU 135. cÖvK…wZKfv‡e Lv`¨ msiÿ‡Yi †KŠkj †KvbwU? K cvwb Øviv ‡aŠZKiY L Lv`¨‡K ‡Lvjv Ae¯’vq †i‡L †`Iqv M Lv‡`¨ wKQz †gvì †hvM Kiv N Lv‡`¨ Zvc cÖ‡qvM Kiv 136. BHA Gi c~Y©iƒc †KvbwU? K Butahydrated hydorxyacetate L Butahydrated hytdroxy anisolce M Butylated hydroxy acetate N Buthlated hydroxy anisole 137. BHT Gi c~Y©iƒc ‡KvbwU? K Butahydrated hydroxy thaimine L Butahydrated hydroxy toluene M Butylated hydroxy toluene N Butylated hydroxy thaimine 138. NO2 - , C6H5COO- cÖf…wZ †hŠM¸‡jv Lv‡`¨ e¨vK‡Uwiqv C÷ I †gv‡ìi e„w× e¨nZ K‡i| †hŠM¸‡jv‡K Lv`¨ msiÿK wn‡m‡e e¨envi Kiv nq| †hŠM¸‡jv‡K Kx ejv nq? K Gw›UgvB‡µvweqvj G‡R›U L Gw›UAw·‡W›U M wK‡jwUs G‡R›U N wiwWDwms G‡R›U 139. gvsm I gvsmRvZ `ªe¨ msiÿ‡Y †KvbwUi wgkÖY e¨eüZ nq? K KNO3 I NaNO2 L KNO2 I NaNO2 M KNO3 I KNO2 N NaNO3 I KNO2 140. gvs‡m Clostridium botulinum cÖwZ‡iv‡a bvB‡UªU Gi Kx cwigvY `ªeY e¨eüZ nq? K 200ppm L 500ppm M 300ppm N 400ppm 141. Lv‡`¨i ˆZj ev Pwe©i mv‡_ Kx cwigvY BHA I BHT e¨eüZ nq? K 0.1% L 0.01% M 0.02% N 0.2% 142. wPwb‡Z †KvbwU Drcbœ nq? K CH3OH L HCHO M CH3CH2OH N CH3CHO 143. †eb‡Rv‡qU RvZxq msiÿ‡Yi MÖnY‡hvM¨ e¨envi mxgv KZ? K 0.1% L 0.2% M 0.3% N 0.4% 144. gvsm RvZxq Lv‡`¨i cP‡bi Rb¨ `vqx †KvbwU? K Penicillium notatum L Pneomococcur bacteriasis M Clostridium botulinum N Spyrogyra 145. gvs‡mi cPb †iv‡a bvBUªvBU je‡Yi e¨envi gvÎv KZ? K 100ppm L 200ppm M 300ppm N 400 ppm

| 146. FDA KZ mv‡j m‡ZR dj I mewR‡Z mvjdvB‡Ui e¨envi wbwl× K‡i‡Q? K 1976 mv‡j L 1986 mv‡j M 1985 mv‡j N 1975 mv‡j 147. †cÖvcvBwj‡bi MÖnY‡hvM¨ e¨envi gvÎv KZ? K 500ppm L 600ppm M 700ppm N 800ppm 148. †mvwWqvg bvBUªvB‡Ui MÖnY‡hvM¨ e¨envi gvÎv KZ? K 100ppm L 110ppm M 120ppm N 130ppm 149. pH Gi MvwYwZK gvb mivmwi †KvbwUi mv‡_ m¤úwK©Z? K H + L OHM Na+ N CH3CH2COO150. †KvbwU e¨env‡i dj I mewRi ¸bMZ gvb e„w× cvq? K njy‡`i Myuov L gwi‡Pi ¸ov M Av`v N js 151. wKDwis c×wZi ¯’vwqZ¡Kvj KZ? K Qq gvm L wZb gvm M GK eQi N `yB eQi 152. KMS ej‡Z Kx eyS? KcUvwmqvg ‡gUv mvjdvBU LcUvwmqvg †gUvj mvjdvi McUvwmqvg †gUvevB mvj‡dU N cUvwmqvg †gUvmvj‡dU 153. †KvbwU mvaviY AvPv‡ii cÖavb Dcv`vb? K NaCl I 3KCl L CaCl2 I HCHO M CaCl2 I KCl N NaCl I CH3COOH 154. †KvbwU NaCl ev CH3COOH Gi mvnv‡h¨ msiÿY Kiv nq? K `B L ïK‡bvv eoB M AvPvi N Av‡Li im 155. †KvbwU ˆZwii ci †aŠZ Kivi cÖ‡qvRb †bB? K †WªvDb GÛ AvqiY d¨vb L WvDb GÛ AvqiY K¨vb M Uz wcm N wi‡WªvBb K¨vb 156. Svj AvPvi ˆZwi‡Z d‡ji UzK‡ivq jeY †gkv‡bvi mgq †KvbwUi ¸uov †gkv‡bv nq? K gwi‡Pi ¸uov L njy‡`i ¸uov M a‡b ¸uov N Kv‡jvwRiv ¸uov 157. j¨vKwUK GwmW e¨vK‡Uwiqv Drcv`b I eskwe¯Ív‡ii Rb¨ AvPv‡i kZKiv KZfvM jeY `ªeY cÖ‡qvRb? K 4-6% L 2-10% M 4-8% N 4-10% 158. 1964 mv‡j Av‡gwiKvq evwYwR¨Kfv‡e Avwe®‹…Z K¨vbwUi bvg Kx? K Drawn and wall ironed L Drawn and ironed M Redrawn and wall ironed N Drewn and Redrawn 159. †Rwj ˆZwii mgq `ªe‡Y Zvc cÖ‡e‡k evav m„wó K‡i †KvbwU? K Avwgl L kK©iv M †cKwUb N LwbR 160. DbœZ we‡k¦ Lv`¨| e¯‘‡Z e¨eüZ ivmvqwbK Dcv`vb I †gqv` m¤ú‡K© aviYv †`Iqv nq †KvbwUi D‡Ïk¨? K wmwjs L wiUwUs M eøvwÂs N K¨vwbs 161. kvK-mewR, gvQ I gvsm kZKiv KZfvM NaCl †hvM Kiv nq? K 8-20% L 8-21%M 7-15% N 7-18% 162. GMRmwUs m¤ú~Y© n‡j †KvbwU Ki‡Z nq? K wmwjs L wiUwUs M ‡j‡ewjs N VvÛv 163. ¸`v‡gi cÖZ¨vwkZ ZvcgvÎv KZ? K 2-5C L 2-10C M 3-10C N 2-15C 164. Avbvi‡mi ¯øvBm †cøBb K¨v‡b fwZ© Kivi mgq kZKiv KZ gvÎvi wPwbi Mig `ªeY ‡hvM Kiv nq? K 40% L 50% M 60% N 70% 165. wmj Kiv Avbvi‡mi K¨vb‡K KZ mgq a‡i cÖ‡mwms K‡i VvÛv Kiv nq? K 2 1 19 wgwbU L 2 1 20 wgwbU M 2 1 21 wgwbU N 2 1 22 wgwbU 166. †KvbwU K¨vÝvi cÖwZ‡iv‡a f~wgKv iv‡L? K KwP f~Æv L gUiïwU M KvuVvj N evuk‡Kvij 167. i³Pvc I i‡³i †Kv‡j÷ij Kgvq †KvbwU? K meyR gUi ïuwU L evuk‡Kvij M Avbvim N KwP f~Æv 168. meyR gU‡i †UbWv‡ivwgUvi Gi wiwWs KZ? K 110-120 L 100-110 M 120-130 N 120-140 169. wmj Kiv K¨vb †÷wijvB‡Rkb Kivi Rb¨ KZÿY ivL‡Z n‡e? K 2 1 1 1 NÈv L 2 1 2 2 NÈv M 2 1 3 3 NÈv N 2 1 4 4 NÈv 170. AwaKvsk gv‡Q †gvU KwVb c`v‡_©i cwigvY KZ? K 24-35% L 14-20% M 0.2-20% N 1-1.8%

| 171. K¨v‡bi †fZ‡ii evqy `~ixf~Z Kivi Rb¨ K¨v‡bi KZ Ask dzUšÍ cvwb‡Z Wzwe‡q ivLv DwPr? K 4 1 Ask L 3 1 Ask M 2 1 Ask N 3 2 Ask 172. gv‡Q LwbR je‡Yi cwigvY KZ? K 0.2-20% L 1-1.8% M 14-20% N 24-35% 173. Lv`¨ wn‡m‡e gvQ DËg nIqvi KviY Kx? K gv‡Q †cÖvwUb I Pwe©i cwigvb Kg L gv‡Q chv©ß cwigvY AvqiY we`¨gvb M gv‡Qi ‡cÖvwUb I Pwe© mn‡R nRg‡hvM¨ N gv‡Qi Pwe© DrK…ó m¤ú„³ d¨vwU GwmW aviY K‡i 174. mvm‡cbm‡b KwVb c`v‡_©i e¨vm KZ Gi †ewk? K 1mm L 1nm M 1m N 1pm 175. IqvUvi ev‡_ KvuP Rvi¸‡jv Kgc‡ÿ KZ Bw Mfxi cvwb‡Z ivLv DwPr? K 1-2 Bw L 2-3 Bw M 3-4 Bw& N 4-5 Bw 176. †Kvb ‡Rvov †Kvqv¸‡j‡›Ui FYvZ¥K Avav‡bi weiæ‡× gvb mgvb? K NaCl-Na2SO4 L NaCl-AlCl3 M Na2SO4-MgSO4 N AlCl3-Al2(SO4)3 177. ivB‡cwbs †Kb Kiv nq? K AYyRxe aŸsm Kivi Rb¨ L ¯’vwqZ¡ evov‡bvi Rb¨ M wgóZv /pH Rvbvi Rb¨ N cPb †iv‡ai Rb¨ 178. GwRs wK? K VvÛv ZvcgvÎvq †Kjvm ˆZwi nq L DcKix AYyRxe †gkv‡bv M AY~Rxe aŸsm Kiv N Pvwbs Kiv 179. evUvi Pvb©vi wK‡mi ˆZwi? K Kvu‡Vi L †jvnvi M wcZ‡ji N cøvw÷‡Ki 180. gvL‡bi Mjbv¼ KZ? K 25-28C L 28-31C M 32-35C N 36-39C 181. g¨vM‡bwmqvi ms‡KZ †KvbwU? K MgO L Mg(OH)4 M MgCO3 N MgSO4 182. †KvbwU mwVK ms‡KZ? K Mg3Si4O10(OH)2 L Mg3Si2O5(OH)2 M Mg3SiO10(OH)3 N Mg2SiO10(OH)2 183. MÜivR ˆZj cÖ¯‘Z Kivi mgq cÖ_‡g bvwi‡Kj †Z‡j Kx †hvM Ki‡Z nq? K †Mvjvc dzj L †ebvi g~j M A‡Uv †nbv N A¨vjKwbK iæU 184. W‡jvgvB‡Ui ms‡KZ ‡KvbwU? K CaCO3.KCO3 L CaCO3.K2SO4 M CaCO3.MgCO3 N CaCO3.Al2(SO4)3 185. U¨vj&K †KvbwU‡Z A`ªeYxq? K Gwm‡W L ÿv‡i M A¨vj‡Kvn‡j N cvwb‡Z 186. w÷qvwiK Gwm‡Wi mwVK ms‡KZ †KvbwU? K C17H33COOH L C17H31COOH M C17H35COOH N C17H34COOH 187. †KvbwU cvwgwUK Gwm‡Wi ms‡KZ? K C15H31COOH L C15H33COOH M C17H35COOH N C15H34COOH 188. †KvbwU †Zj? K C15H32COOH L C15H31COOH M C7H34COOH N C17H33OH 189. cvwgwUK GwmW‡K m¤ú„³ d¨vwU GwmW ejvi KviY Kx? K C=C L CC M COOH N C-C 190. †nvg‡gW †nqvi ‡Rj †Kv_vq msiwÿZ ivL‡Z nq? K I‡f‡b L AvBm ev‡_ M wd«‡R N IqvUvi ev‡_ 191. †Kvjv‡Rb Gi AvswkK nvB‡WªvjvBwmmG ˆZwi Kiv nq †KvbwU? K ‡nqvi Rj L wRjvwUb M †Kv‡jv‡Rb N †KvjvwUb 192. cwi®‹viK ˆZwii Rb¨ kZKiv KZfvM NaOH e¨envi Kiv hvq? K 30% L 40% M 50% N 60% 193. B_vBb‡K B_vb¨v‡j iƒcvšÍ‡ii mgq Kx wgkÖY e¨envi Kiv nq? K 8.10% H2SO4 Ges 2% HgSO4 L 20% H2SO4 Ges 1% AgSO4 M 10% H2SO4 Ges 2% AgSO4 N 20% H2SO4 Ges 1% HgSO4 194. B_vb¨vj‡K B_v‡bvwqK Gwm‡W iƒcvšÍ‡ii mgq cÖfveK wn‡m‡e †KvbwU e¨envi Kiv nq? K Mn L Ni M Pd N Pt 195. Møy‡KvR †_‡K B_vbj Drcv`b Dcw¯’wZ‡Z N‡U? K RvB‡gR L Bbfvi‡UR M A¨vwm‡Uve¨vKUi N bóK

| েসায়ি ২য় পত্র অধ্যায় ০১: পরেরবশ েসায়ি 1. 27C ZvcgvÎvq O2 AYyi eM©g~j Mo eM©‡eM KZ? K 461.62 ms–1 L 480.62 ms–1 M 483.62 ms–1 N 490.62 ms–1 2. g~j MÖxb nvDR M¨vm †KvbwU? K CO2 L CH4 M O3 N NO2 3. SATP †Z M¨v‡mi †mvjvi AvqZb KZ? K 22.4 L L 22.8 L M 24.4 L N 24.8 L 4. I‡Rvb¯Íi ÿ‡qi Rb¨ †Kvb M¨vmwU `vqx? K CH3FCl L CF2Cl2 M F2C–CHCl2 N CHFCl2 5.Kv‡ev©mvBwK¬K †hŠM wb‡Pi †KvbwU? K mvB‡K¬vweD‡Ub L bvB‡Uªv‡ebwRb M _vqvwdb N wdDivb 6.wMÖb nvDR cÖfv‡e †Kvb M¨vmwUi f~wgKv †ewk? K N2 L CH4 M CO2 N CFC 7.cvwb‡Z AYyRxe †eu‡P _vKvi Rb¨ (DO) Gi cwigvYK (2-3) ppm L (4-8) ppm M (6-15) ppm N (20-25) ppm 8.cvwbi weï×Zv cwigv‡ci gvb`Û bq †KvbwU? K SDS L DO M BOD N pH 9.1970 mv‡ji 12 b‡f¤^i N~wY©So I R‡jv”Qv‡mi d‡j evsjv‡`k nvwi‡qwQj K 2 jÿ †jvK L 3 jÿ †jvK M 4 jÿ †jvK N 5 jÿ †jvK 10.cigk~b¨ ZvcgvÎv KZ? K –273C L –274C M –294C N –298C 11.wjUvi-GU‡gvmwdqvi GK‡K R Gi gvb KZ? K 0.820 L 0.0821 M 8.200 N 8.213 12.27C ZvcgvÎvq GKwU Aw·‡Rb AYyi Mo MwZkw³ KZ? K 6.20910–7 erg L 6.20910–14 erg M 3.10510–7 J N 3.10510–14J 13.‡KvbwUi Kvi‡Y m„ó GwmW e„wó cwi‡e‡ki †Zgb †Kv‡bv ÿwZ K‡i bv? K CO2 L SO2 M SO3 N NO2 14.mgf‡ii CH4 I H2 †K k~b¨cv‡Î 25C G ivLv n‡jv, AvswkK Pvc †gvU Pv‡ci fMœvsk n‡eK 2 1 L 9 2 M 9 8 N 17 16 15.w¯’i ZvcgvÎvq r.m.s †e‡Mi mwVK µg †KvbwU? K H2N2CO2 L N2H5CO2 M N2CO2H2 N CO2N2H2 16.SATP †Z Pvc = ? K 1Nm–2 L 1.01 bar M 1 mm(Hg) N 1 torr 17.SATP †Z †Kvb M¨v‡mi †gvjvi AvqZb KZ wjUvi? K 22.4 L 24.789 M 42.2 N 74.4 18.wek¦ e¨vs‡Ki g‡Z cvwb `~l‡Yi Rb¨ †Kvb wkí †ewk `vqx? K U¨vbvix wkí L †ccvi wkí M mvi wkí N †U·UvBj wkí 19.25C ZvcgvÎvq 11.2L CO2 M¨v‡mi AYy msL¨v KZ? K 2.761023wU L 2.761022wU M 2.761021wU N 2.761020wU M 168 mm N 350.6 mm 20.NH3, CO2, O2 I H2 Gi g‡a¨ e¨vc‡bi nv‡ii m¤úK©- K H2 O2 NH3 CO2 r r r r L H2 NH3 O2 CO2 r r r r

| M H2 NH3 CO2 O2 r r r r N CO2 O2 NH3 H2 r r r r 21.mgf‡ii CH4 I H2 †K k~b¨cv‡Î 25C G ivLv n‡jv| H2 Gi AvswkK Pvc †gvU Pv‡ci fMœvsk n‡eK 2 1 L 9 1 M 9 8 N 17 16 22.STP †Z 2.5g bvB‡Uªv‡Rb M¨v‡mi AvqZb KZ wjUvi? K 22.4 L 2.24 M 4.48 N 24.8 23.R Gi gvb SI GK‡K KZ? K 8.314 L 1.987 M 0.0821 N 8.325 24.10.0mL 0.1M NaOH Gi `ªeY‡K 0.1M HCl `ªeY Øviv UvB‡Uªkb Kivi mgq 9.99mL HCl `ªeY †hvM Kivi ci 0.02mL HCl `ªeY †hvM Kiv n‡j pH Gi AvbygvwbK cwieZ©b n‡eK 0.02 L 0.5 M 2.0 N 5.0 25.‡KvKv‡Kvjv, dv›Uv, ¯úªvBU BZ¨vw` †_‡K UK jv‡M KviY GwmW wn‡m‡e G‡Z eZ©gvb _v‡KK HCl L bvBwUªK GwmW M U¨vs N Kve©b WvBA·vBW 26.wb¤œwjwLZfv‡e wk‡íi M¨vmxq eR¨©, hv evqy `~l‡Yi Rb¨ `vqx| K O2, SO2, CO2, N2, CFC L SO2, CO2, NO2, CFC M O2, N2, CFC N N2, SO2, CO2 27.‡Kv‡bv ¯’v‡bi AvenvIqv I Rjevqy‡K wbqš¿Y K‡i †KvbwU? K ÷ªv‡Uvwùqvi Gi evqygÛj L Uª‡cvwùqvi Gi evqygÛj M Avq‡bvwùqvi Gi evqygÛj N †g‡mvwùqvi Gi evqygÛj 28.16g Aw·‡Rb G AYyi msL¨v KZ? K 6.0231023 L 3.01151023 M 6.0231022 N 3.01151022 29.cig k~b¨ ZvcgvÎv †KvbwU? K 0C L 273C M 273K N –273C 30.R wK‡mi cwigvcK? K ej L Pvc M KvR N kw³ 31.2.24L M¨v‡m (NTP †Z) KZwU CO2 AYy _v‡K? K 6.0231023 L 6.0231022 M 6.0231021 N 3.01151023 32.2.016g H2 M¨vm †_‡K 1023wU AYy AcmviY Ki‡j KZwU AYy Aewkó _v‡K? K 6.0231022 L 5.0231023 M 6.0231021 N 5.0231022 33.NTP †Z GKwU Av`k© M¨v‡mi ms‡KvPbkxjZv ¸Yv¼ (Z) Gi gvb KZ? K 2.0 L 1.5 M 1.0 N 3.0 34.‡KvbwU Si c×wZ‡Z Pv‡ci GKK? K atm L Nm–2 M cm-Hg N dyne/cm2 35.wb‡¤œi †Kvb ZvcgvÎvq CO2 M¨vm Zij nqbv? K 31.1C L 28.5C M 32C N 30C 36.16g O2 G cigvYyi msL¨v KZ? K 6.0231023 L 3.01151023 M 12.0461023 N 1.20461023 37.0.28g N2 M¨v‡mi NTP †Z AvqZb KZ? K 22.4 L L 0.224L M 2.24L N 224 cm3 38.NTP †Z 1.0L M¨v‡mi fi 0.09g M¨vmwU Kx? K O2 L H2 M N2 N CO2 39.‡KvbwU ¯^Ztù~Z© cÖwµqv? K e¨vcb L wbtmiY M †Kv‡bvwUB bq N DfqwUB

| 40.NTP †Z 1.0L M¨v‡mi fi 1.44g M¨vmwU Kx? K H2 L O2 M N2 N CO2 41.4.0g CH4 Ges 24g O2 M¨v‡mi wgkÖ‡Y CH4 Gi †gvj fMœvsk KZ? K 0.25 L 0.5 M 0.75 N 0.33 42.1.0 †gvj M¨v‡mi ZvcgvÎv 1.0K e„w× Ki‡j †h m¤úªmviYRwbZ KvR m¤úbœ nq Zvi bvgK M¨v‡mi cÖmviv¼ L Av`k© M¨vm aªæeK (R) M ms‡KvPbkxjZv aªæeK (Z) N AvqZbRwbZ f¨vÛviIqvjm aªæeK (a) 43.wb‡Pi †Kvb †jLwPÎwU e‡qj m~·K mg_©b K‡i? K V P 1 L PV P M logV logP N logP logV 44.‡Kvb ai‡bi `~lK cvwb‡Z `ªexf~Z Aw·‡Rb (DO) Gi cwigvY n«vm K‡i? K A‰Re `~lK L ˆRe `~lK M †ZRw¯Œq `~lK N KYvRvZxq `~lK 45.Dw™¢` KZ…©K CO2 †kvlY K‡i wewµqvi gva¨‡g N‡U? K mv‡jvKms‡kølY L Awf¯ªeY M cwi‡kvlY N k¦mb wewµqv 46.`yBwU M¨v‡mi Nb‡Z¡i AbycvZ 1t2 Ges Zv‡`i ZvcgvÎvi AbycvZ 2t1 M¨vm `yBwUi Pv‡ci AbycvZK 1t1 L 1t2 M 2t1 N 4t1 47.wb‡Pi wewµqvq AbyeÜx A¤ø-ÿviK hyMj †KvbwU? HCl + NH3 NH4 +Cl– K HCl Ges NH4 L NH3 Ges Cl– M HCl Ges Cl– N HCl Ges NH3 48. wb‡¤œi wewKiY¸‰jvi g‡a¨ †KvbwUi Zi½‰`N©¨ me‡P‡q Kg? A. X-ray B. UV C. -ray D. infra-red Soln :C 49. †Kvb †jLwPÎwU w¯’i Pv‡c Pvj©‡mi m~‡Îi mv‡_ msMwZc~Y©? A. B. C. D. Soln :A, Pvj©m-Gi m~Î g‡Z, V T, m¤úK© mgvbycvwZK n‡j †jLwPÎ g~j we›`yMvgx nq| myZivs mwVK DËi option A| 50. 100C ZvcgvÎvq I 1 evqygÛjxq Pv‡c 1 wK‡jvMÖvg Rjxq ev‡®úi AvqZb KZ? A. 12 L B. 100 L C. 1200 L D. 1701 L Soln :D, V = wRT PM = 1000×0.0821×373 1×18 = 1701 L 51. †evëRg¨vb aªæe‡Ki GKK n‡jvA. J/molecule B. J.s C. J/K D. g/cc Soln :A, †evjU&Rg¨vb aªæe‡Ki GKK n‡jv J/molecule 52. 300 K ZvcgvÎvq evZv‡mi N2 AYyi MwZ KZ? A. 450 m/s B. 516 m/s C. 400 m/s D. 600 m/s Soln :B, C = 3RT M = 3×0.0821×300 28×10–3 =516m/s 53. 27C ZvcgvÎvq bvB‡Uªv‡Rb M¨v‡mi AYyi eM©g~j Mo eM© †eM KZ? A. 515.22 ms–1 B. 516.95 ms–1 C. 517.90 ms–1 D. 526.95 ms–1 Soln :B, Avgiv Rvwb, C = 54. wb‡gœi †jLwPÎmg~‡n wbw`©ó ZvcgvÎvq GKwU wbw`©ó f‡ii Av`k© M¨v‡mi AvqZ‡bi mv‡_ Gi Pv‡ci m¤úK© †`Lv‡bv n‡q‡Q| †Kvb †jLwPÎwU Aï×? A. B. p C. D. Soln :D, w¯’i ZvcgvÎvq pv-Gi gvb memgq aªæe, ZvB A‡ÿi mgvšÍivj †iLv cvIqv hv‡e| 55. wb‡gœi †Kvb M¨vmwU Av`k© M¨v‡mi ag© †_‡K me‡P‡q †ekx wePy¨Z? A. HCl B. He C. CH4 D. N2 Soln :A, Avgiv Rvwb, PV = nRT ev PV = myZivs, †`Lv hv‡”Q †h M¨v‡mi AvYweK fi †ewk †m M¨vm Av`k© M¨v‡mi ag© n‡Z †ewk wePz¨wZ †`q| GLv‡b HCl Gi AvYweK fi me‡P‡q †ewk| ZvB DËi n‡e HCl| 56. 13 C ZvcgvÎvq wbw`©ó f‡ii GKwU Av`k© M¨v‡mi AvqZb w¯’i Pv‡c wظY Kiv nj| GB Ae¯’vq M¨vmwUi ZvcgvÎv KZ n‡e? (08–09) A. 7.5C B. 299C C. 13C D. 26C Soln :B, cwieZ©xZ ZvcgvÎv, T2 = (13+273) 2 = 572K = 299C Ans. 57. GKB ZvcgvÎvq H2 I O2 M¨v‡mi r.m.s †e‡Mi AbycvZ n‡”Q- (08–09) 1 3 516.95 ms 28 10 3 8.316 300 M 3RT RT M m 1/V P V PV P PV V T, K V, L T, K V, L T, K V, L T, K V, L

| A. 1/8 B. C. 4 D. 8 Soln :C, H2 I O2 M¨v‡mi r.m.s AbycvZ, = O2 Gi AvYweK fi H2 Gi AvYweK fi = 32 2 = 4 Ans. 58. 17C ZvcgvÎvq 2 atm Pv‡c 5 litre AvqZ‡bi GKwU M¨v‡mi IRb 3 g| M¨vmwUi AvYweK IRb KZ? (07–08) A. 7.14 B. 26.13 C. 32.14 D. 16.34 Soln :A, PV = nRT ev PV = M = 59. Kve©Y, bvB‡Uªv‡Rb I Aw·‡R‡bi cvigvYweK IRb h_vµ‡g 12, 14 I 16| wb‡Pi M¨vm‡Rvo¸‡jvi g‡a¨ †KvbwUi e¨vcb nvi mgvb? (07– 08) A. CO2 and NO2 B. CO2 and N2O C. CO2 and CO D. N2O and NO2 Soln :B, A. CO2 Gi AvYweK fi = 44, NO2 Gi AvYweK fi = 46 B. CO2 Gi AvYweK fi = 44, N2O Gi AvYweK fi = 44 B. CO2 Gi AvYweK fi = 44, CO Gi AvYweK fi = 28 B. N2O Gi AvYweK fi = 44, NO2 Gi AvYweK fi = 46 CO2 I N2O Gi e¨vcb nvi mgvb| 60. Pvc w¯’i †i‡L GKwU M¨v‡mi (AvqZb 1000 cm3 ) ZvcgvÎv A‡a©K Kiv nj| cwiewZ©Z Ae¯’vq Dnvi AvqZb KZ n‡e?(06–07) A. 2000 cm3 B. 500 cm3 C. 1000 cm3 D. 1500 cm3 Soln :B, cwieZ©xZ AvqZb, V2 = . 61. GKB ZvcgvÎvq GKB AvqZ‡bi cÖ_g cv‡Î 1 mol N2 Ges wØZxq cv‡Î 1 mol CO2 ivLv n‡jv| wb‡gœi †Kvb& Dw³wU mwVK bq? A. 1g cv‡Î Pvc wbgœZi B. 1g cv‡Î N2 AYyi MwZ D”PZi C. Dfq cv‡Î AYyi msL¨v mgvb D. Dfq cv‡Î AYymg~‡ni Mo MwZkw³ mgvb Soln :A, 1 mol N2 = 28 gN2, 1 mol CO2 = 44g CO2 †h M¨v‡mi AvYweK fi hZ Kg Zvi Abymg~‡ni MwZ‡eM ZZ †ewk nq| †h‡nZz 1g cv‡Î 1 mol N2 Ges 2q cv‡Î 1 mol CO2 M¨vm Av‡Q, myZivs 1g cv‡Î N2 AYyi MwZ wbgœZi| myZivs DËi n‡e A| 62. wewµqv m¤^‡Ü wb‡Pi †Kvb& Dw³wU fzj? A. C- Gi RviY msL¨v n«vm cvq B. H- Gi RviY msL¨v AcwiewZ©Z _v‡K C. O-Gi RviY msL¨v n«vm cvq D. wewµqvq O2 weRvwiZ nq Soln :A, wewµqvwU‡ZÑ i. H Gi Rvib msL¨v AcwiewZ©Z _v‡K ii. O2 weRvwiZ nq iii. O Gi Rvib msL¨v n«vm cvq iv. Kve©b RvwiZ nq v. Kve©‡bi Rvib msL¨v e„w× cvq| Ans. A 63. 27C ZvcgvÎvq 1.0 atm Pv‡c 8.2 L AvqZ‡bi †Kvb M¨v‡mi fi 6.0 g | M¨vmwUi Av‡cwÿK fi KZ? A. 44 B. 18 C. 28 D. 16 Soln :B, PV = nRT n = n = 0.333 = M = 18 Ans. 64. GK A¨vU‡gvwùqvi Pv‡c I wbw`©ó ZvcgvÎvq GKwU wbw`©ó AvqZ‡bi cv‡Î 4 g wnwjqvg , 14 g bvB‡Uªv‡Rb Ges 16 g Aw·‡Rb Ave× Av‡Q| †KvbwUi AvswkK Pvc m‡e©v”P? (02–03) A. bvB‡Uªv‡Rb B. Aw·‡Rb C. wnwjqvg D. mK‡ji AvswkK Pvc mgvb Soln :C, GK †gvj wnwjqvg = 4g He A‡a©K †gvj bvB‡Uªv‡Rb = 14g N2 A‡a©K †gvj Aw·‡Rb = 16g O2 †h‡nZz wnwjqv‡gi †gvj msL¨v me‡P‡q †ewk| ZvB wnwjqvg-Gi AvswkK Pvc m‡e©v”P| 65. wZb AvqZ‡bi bvB‡Uªv‡Rb Ges `yB AvqZ‡bi †K¬vwi‡bi wgkÖ‡Yi c~Y©Pvc 1 G¨vU‡gvmwdqvi (760 wg.wg.)| H wgkÖ‡Y bvB‡Uªv‡Rb I †K¬vwib Gi AvswkK Pvc KZ? (99–00) A. 400 mm and 360 mm B. 500 mm and 260 mm C. 456 mm and 304 mm D. 350 mm and 410 mm Soln :C, †h‡nZz wZb AvqZb N2 Ges `yB AvqZb Cl2 wgkª‡Yi c~Y©Pvc| A¨vU‡gvmwdqvi (760 mm)| H wgkª‡Y N2 I Cl2 Gi AvswkK Pvc nj 456 mm Ges 304 mm. Ans. C 66. wb‡æi †Kvb&wU Na+ Gi AvqwbK e¨vmva© (nm)? A. 0.98 B. 0.098 C. 0.0098 D. 0.00098 Soln :B 67. KNO3 wb‡gœi †Kvb †kªYxi †Kjvm MVb K‡i? A. A‡_©viw¤^K B. †n·v‡Mvbvj C. NbK D. g‡bvwK¬wbK Soln :A, KNO3 A‡_©viw¤^K †kªYxi †Kjvm MVb K‡i| †Kjv‡mi †kªYxwefvM: †Kjvm R¨vwgwZK x, y, z Aÿ eivei GKK `~iZ¡‡K h_vµ‡g a, b, c Øviv Ges Aÿ¸‡jvi cvi¯úvwiK †Kvb¸‡jv‡K , , Øviv cÖKvk K‡i cÖK…wZ‡Z cÖvß †Kjvm¸‡jv‡K 1848 mv‡j weÁvbx eªv‡fBR wbgœiƒ‡c mvZwU g~j †kªYx‡Z web¨¯Í K‡ibÑ 1. wKDweK/NbK/AvB‡mv‡gwUªK NaCl, WvqgÛ, avZzmg~n-†hgb Cu, Ag 2. †UUªv‡Mvbvj †k¦ZwUb (SnO2), TiO2, SnCl2 3. A‡_©viw¤^K KNO3, BaSO4, iw¤^Kmvjdvi 4. g‡bvwK¬wbK Na2SO4, 10H2O, g‡bvwK¬wbK(S8) wRcmvg 5. UªvBwK¬wbK K2Cr2O7, H3BO3, CuSO4.5H2O 6. i¤^‡nWªvj K¨vjmvBU(CaCO3), NaNO3 eid 7. †n·v‡Mvbvj MÖvdvBU, avZzmg~n, †KvqvU©R 68. wb‡gœi †KvbwU mwVK bq? A. ev®úxqfeb †h †Kvb ZvcgvÎvq N‡U _v‡K B. Pvc cwieZ©‡bi mv‡_ mv‡_ GKwU Zi‡ji ùzUbvsK cwieZ©b nq C. GKB Dcv`vb wewkó e¯‘i f‡ii wewfbœZvi Rb¨ myßZvc wewfbœ nq D. hLb eid, cvwb Ges Rjxq ev®ú mnve¯’vb K‡i, ZLb GKwU mgmZ¡ `kv jvf K‡i 4 1 RT M W 7.14 2 5 3 0.082 290 PV WRT 1 3 2000cm 0.5 1000 0.5 V C2H5OH 3O2 2CO2 3H2O C2H5OH 3O2 2CO2 3H2O 0.333mol 0.082 300 1 8.2 RT PV M m m 6

| Soln :[D] A, B, C mwVK| D mwVK bq| KviY, hLb eid, cvwb I Rjxq ev®ú mnve¯’vb K‡i, ZLb Zv‡K ˆÎawe›`y e‡j| 69. Zij ùwUK m¤ú‡K© wb‡gœi †KvbwU mwVK bq? A. ˆRe †hvM B. AvYweK MV‡bi `yB cÖv‡šÍ †cvjvi MÖæc _v‡K C. Av‡jvK ag© cÖ`k©b K‡i D. ZvcgvÎv ms‡e`K wnmv‡e KvR K‡i Soln :B, Zij ùwUK m¤ú‡K© cÖ‡kœ D‡jøwLZ A, C I D †Z †`qv e³e¨¸wj mwVK| B †Z D‡jøwLZ e³e¨ mwVK bq| KviY, AvbweK MV‡bi `yB cÖv‡šÍ †cvjvi MÖæc bq, GKcÖv‡šÍ †cvjvi MÖæc _v‡K| 70. GKwU ˆRe †hŠ‡Mi 5.17 mg †K `nb Ki‡j 10.32 mg Kve©b WvB A·vBW Ges 4.23 mg cvwb Drcbœ nq| 100C ZvcgvÎv I 760 mm (Hg) ZvcgvÎvq 0.156 g †hŠM 53ml AvqZb `Lj K‡i| †hŠMwUi AvYweK ms‡KZ wb‡gœi †KvbwU? A. C2H4O B. C8H16O4 C. C6H12O3 D. C4H8O2 Soln :D, ; V2 = 0.038L GLb, 0.381 0.156 gm 1 L 22.4 L = 91.957 gm 96 gm, hv †Kej C4H8O2 Gi Rb¨ cÖ‡hvR¨| Ans. C4H8O2 71. Pvc, Zvc I AvqZb msµvšÍ †Kvb m~ÎwU mwVK bq? A. V = V0 B. P = P0 C. PV = RT D. PV = nRT Soln :C, Pvc, Zvc I AvqZb msµvšÍ A, B, D m~θwj mwVK, wKš‘ C mwVK bq Gi ï× iƒc- PV = Ans. 72. Av`k© I ev¯Íe M¨vm msµvšÍ wb‡gœi †Kvb Z_¨wU fzj? A. N2, O2 – Av`k© M¨vm B. H2, CO2 – ev¯Íe M¨vm C. PV = nRT mgxKiYwU ev¯Íe M¨vm cy‡ivcywi AbymiY K‡i D. PV = nRT mgxKiYwU ev¯Íe M¨vm cy‡ivcywi AbymiY K‡i bv Soln :A, KviY Av`k© M¨vm ej‡Z †Kvb M¨vm GLbI Avwe®‹„Z nqwb| N2, O2 Av`k© M¨v‡mi KvQvKwQ| wKš‘ Av`k© M¨vm bq| B, C I D mwVK| ev¯Íe M¨vm: ev¯Í‡e †h M¨vm cvIqv hvq Zv‡`i ev¯Íe M¨vm e‡j| ev¯Íe M¨vm mKj ZvcgvÎv I Pv‡c PV = nRT mgxKiY †g‡b P‡j bv| Z‡e wbgœ Pv‡c †hgb 1 atm ev wb‡P Ges D”P ZvcgvÎvq ev¯Íe M¨vmmg~n †gvUvgywU Av`k© M¨v‡mi b¨vq AvPiY K‡i| wKš‘ D”P Pvc I wbgœ ZvcgvÎvq Av`k© AvPib †_‡K ev¯Íe M¨v‡mi h‡_ó wePz¨wZ N‡U| Av`k© M¨vm: †h M¨vm me ZvcgvÎv I Pv‡c M¨vm m~Îmg~n h_v e‡qj, Pvj©m Ges A¨v‡fvM¨v‡Wªv m~Î cy‡ivcywi †g‡b P‡i Zv‡K Av`k© M¨vm e‡j| Av`k© M¨vm mKj ZvcgvÎv I Pv‡c PV = nRT †g‡b P‡j| w¯’i ZvcgvÎvq Av`k© M¨v‡mi Af¨šÍixY kw³ Gi AvqZ‡bi Dci wbf©ikxj bq| 73. †h cigvYyi wbDwK¬qv‡mi †cÖvUb msL¨v mgvb wKš‘ fi msL¨v wfbœ, Zvnv wb‡gœi †KvbwUA. AvB‡mvevi B. AvB‡mvgvi C. AvB‡mv‡Uvc D. AvB‡mv‡Uvb Soln :C, AvB‡mv‡Uvc: †Kvb †gŠ‡ji GKvwaK cigvYy hv‡`i cvigvYweK msL¨v GKB wKš‘ fi msL¨v wfbœ Zv‡`i‡K ci¯ú‡ii AvB‡mv‡Uvc e‡j| †hgb: nvB‡Wªv‡R‡bi wZbwU AvB‡mv‡Uvc nj: = †cÖvwUqvg, = wWD‡Uwiqvg Ges = wUwUªqvg| AvB‡mvevi: †hme cigvYyi fi msL¨v ev wbDwK¬qb msL¨v (†cÖvwUb msL¨v I wbDUª‡bi wgwjZ msL¨v) GKB wKš‘ cvigvYweK msL¨v wfbœ Zv‡`i‡K ci¯ú‡ii AvB‡mvevi e‡j| †hgb: Ges ci¯ú‡ii AvB‡mvevi| AvB‡mvUb: †hme cigvYyi wbDUªb msL¨v mgvb wKš‘ cvigvYweK msL¨v wfbœ Zv‡`i ci¯ú‡ii AvB‡mvUb e‡j| †hgb: Ges ci¯ú‡ii AvB‡mv‡Uvb| AvB‡mvgvi: GKB cÖRvwZi `ywU wbDwK¬qvm hw` `ywU wfbœ kw³ Ae¯’vq _v‡K Ges Kgc‡ÿ Zv‡`i GKwU hw` ÿY¯’vqx nq Zvn‡j Zv‡`i‡K ejv nq AvB‡mvgvi| 74. GKB ZvcgvÎv I Pv‡c †Kvb cv‡Îi GKB wQ`ªc‡_ GKwU AÁvZ M¨vm I †K¬vwi‡bi c„_Kfv‡e wbtmi‡Yi nvi h_vµ‡g 6 : 5| †K¬vwi‡bi NbZ¡ 36 n‡j AÁvZ M¨v‡mi NbZ¡ wb‡gœi †KvbwU? A. 40 B. 25 C. 50 D. 20 Soln :B, MÖvnv‡gi e¨vcbm~Î g‡Z, d1 = 25 Ans. 75. w¯’i ZvcgvÎvq †Kvb M¨v‡mi Pvc Ges AvqZ‡bi cwieZ©b wb‡gœi †KvbwU? A. AvB‡mv_vigvj B. AvB‡mve¨vwiK C. AvB‡mvµwbK D. A¨vWvqv‡ewUK Soln :A, w¯’i ZvcgvÎvq †Kvb M¨v‡mi Pvc Ges AvqZb Gi cwieZ©b n‡”Q AvB‡mv _vigvj| w¯’i ZvcgvÎvq wbw`©ó cwigvb M¨v‡mi Dci wewfbœ cwigvb Pvc cÖ‡qvM K‡i M¨vmwUi †h AvqZb cvIqv hv‡e †m¸‡jv w`‡q †jLwPÎ A¼b Ki‡j, †jLwP‡Î cÖ`wk©Z eµ †iLvmg~n GK GKwU wbw`©ó ZvcgvÎvq Pvc I AvqZ‡bi m¤úK© wb‡`©k K‡i| ZvB Giv mgZvcxq †iLv ev AvB‡mv_vg© bv‡g cwiwPZ| myZivs DËi A| 76. cv`v‡_©i †fŠZ ag© m¤ú‡K© wb‡gœi †KvbwU mwVK bq? A. M¨v‡mi AvšÍtAvYweK AvKl©Y m‡e©v”P I ¯’vbvšÍi MwZ me©wbgœ B. KwVb c`v_© Pv‡c msKywPZ nq bv C. Zij c`v‡_©i NbZ¡ KwVb †_‡K Kg D. M¨vmxq cv`v_© cv·K c~Y© K‡i _v‡K Soln :A, KviY, M¨v‡mi AvšÍtAvYweK AvKl©Y mewbgœ Ges ¯’vbvšÍi MwZ m‡e©v”P| B, C, D mwVK| 77. wb‡gœi †KvbwU nvB‡Wªv‡R‡bi GKwU cigvYyi fi (g)? A. 1.67 10–25 B. 1.67 10–24 C. 1.67 10–22 D. 1.67 10–23 Soln :B, nvB‡Wªv‡R‡bi GKwU cigvYyi fi = 1.6710–24 gm 6.021023 wU cigvYyi fi = 2.016 gm 2 2 2 1 1 1 T P V T P V 373 760 53 103 gm 0.038 0.156 gm 0.038 0.15622.4 273 1 273 1 m M RT M m H 1 1 H 2 1 H 3 1 Te 127 52 I 127 53 C 14 6 O 16 8 1 2 1 1 d d r r r 5 r 6 d 36 5 6 2 1 1 d1 36 25 36 1 d 1 25 1

| 1 wU cigvYyi fi = 78. wb‡gœi †KvbwU Pvj©m-Gi m~Î? A. V hLb n & T aªæeK B. V T hLb n & P aªæeK C. V n hLb T & P aªæeK D. V T hLb V aªæeK Soln :B, Pvj©m Gi m~Î: w¯’i Pv‡c wbw`©ó f‡ii M¨v‡mi AvqZb ZvcgvÎvi mgvbycvwZK| V T (n, P aªæeK) 79. wb‡gœi †Kvb c`v_©wU KwVb, Zij, M¨vm wZb Ae¯’vq cvIqv hvq? A. Kc©yi B. †dbj C. cvi` D. cvwb Soln :D, cvwb KwVb, Zij, M¨vm 3 Ae¯’vqB cvIqv hvq| 80. `yBwU M¨v‡mi NbZ¡ d1 I d2 Øviv Ges wWwdDk‡bi ev e¨vc‡bi nvi r1 I r2 Øviv cÖKvk Kiv n‡j wb‡gœi †KvbwU mZ¨ bq? A. r1 = B. r2 = C. D. r1 = r2 Soln :D, MÖvnv‡gi M¨vm e¨vcb m~Î nj-w¯’i ZvcgvÎv I Pv‡c †Kvb M¨v‡mi e¨vc‡bi nvi D³ M¨v‡mi Nb‡Z¡i eM©g~‡ji e¨¯ÍvbycvwZK| A_©vr r r = k AZGe, `ywU M¨vm d1, d2 Nb‡Z¡i I Zv‡`i e¨vc‡bi nvi h_vµ‡g, r1 I r2 n‡j, r1 = k r2 = k AZGe A, B, C mZ¨| myZivs DËi n‡e D| 81. A¨v‡fvM¨v‡Wªv msL¨vi wb‡gœi †KvbwU mwVK gvb? A. 6.02 10–23 B. 1.66 10–24 C. 6.02 1023 D. 22.4 Soln :C, A¨v‡fvM¨v‡Wªv gvb = 6.023 1023 Ans. 82. wekªvgKv‡j GK e¨w³ 25C ZvcgvÎv I 100 kPa Pv‡c GK N›Uvq 14 L Aw·‡Rb MÖnY K‡i| e¨w³wU KZ †gvj Aw·‡Rb MÖnY K‡i? A.0.57 mol B. 0.44 mol C. 1.6 mol D. 5 mol Soln :A, GLv‡b Pvc, P = 100 kPa = 100000 Pa = 0.9869 atm AvqZb, V = 14 L ZvcgvÎv, T = 25C = 298 K †gvjvi M¨vm aªæeK, R = 0.0821 L atm mol–1 K–1 Avgiv Rvwb, PV = nRT n = Ans. 83. 27C ZvcgvÎvq I 1.0 atm evqy Pv‡c 1.0 L †ejy‡b wnwjqvg †gvj msL¨v wbY©q Ki| A. 0.05 B. 0.04 C. 0.06 D. 0.03 Soln :B, GLv‡b Pvc, P = 1 atm AvqZb, V = 1 L ZvcgvÎv, T = 27C = 300 K †gvjvi M¨vm aªæeK, R = 0.0821 L atm mol–1 K–1 Avgiv Rvwb, PV = nRT n = Ans. 84. eZ©gv‡b †Kvb bxwZ cÖ‡qvM K‡i evwYwR¨K wfwˇZ Zij evqy cÖ¯‘Z Kiv nq? A. †nbixi c×wZ B. GgvMvif c×wZ C. Ryj-_gmb bxwZ D. †KvbwUB bq Soln :C, 85. w¯’i ZvcgvÎv Ges 760 wg.wg. Pv‡c Kve©bWvB A·vB‡Wi NbZ¡ 22| ZvcgvÎv w¯’i †i‡L NbZ¡ wظY Ki‡Z n‡j wK cwigvY Pvc cÖ‡qvM Ki‡Z n‡e? A. 750 wg.wg. B. 1520 wg.wg. C. 3040 wg.wg. D. 380 wg.wg. Soln :B GLv‡b, Pvc, P1 = 760 mm NbZ¡, D1 = D NbZ¡, D2 = 2D Pvc, P2 = ? Avgiv Rvwb, P2 = = P2 = 1520 mm 86. wb‡gœi †Kvb M¨v‡mi e¨vc‡bi nvi †ekx? A. N2 = 14 2 = 28 B. CO2 = 12 + 16 2 = 44 C. O2 = 16 2 = 32 D. H2 = 1 2 = 2 Soln :D, 87. fzj m¤úK© †KvbwU? A. PV = nRT B. d= C. PV = MRT D. PV = NKT Soln :C, M¨v‡mi mgš^q m~Î n‡jv, PV = nRT PV = W M RT PM = W V RT PM = dRT d = PM RT Ges M¨v‡mi Pvc, AvqZb Gi mv‡_ †evëRg¨vb aªæe‡Ki m¤úK©, PV = 2 3 NKT 88. GKwU M¨vm‡K msKzwPZ K‡i nVvr m¤cÖmviY Ki‡j Kx N‡U? A. Pressure of gas is increased B. Temperature of gas is increased C. Temperature of gas is decreased D. None Soln :C, msKzwPZ Ae¯’vq M¨v‡mi Abymg~‡ni g‡a¨ Zxeª AvšÍ:KYv AvKl©Y kw³ weivR K‡i| m¤cÖmvi‡bi mgq Abymg~n ci¯úi †_‡K `~‡i m‡i †h‡Z _v‡K e‡j G AvšÍiKYv AvKl©‡Yi wecix‡Z Zv‡K KvR Ki‡Z nq| G Kv‡Ri Rb¨ †h kw³ cÖ‡qvRb nq Zv M¨v‡mi †fZi †_‡K †kvwlZ nq| GRb¨ Ryj-_gmb cÖfv‡e M¨v‡mi ZvcgvÎv n«vm cvq| 89. bx‡Pi¸‡jv n‡Z Abv`ª© †Kjvm †ei Ki| A. cUvm Gjvg B. Møyevi jeY C. mvaviY jeY D. Bcmg jeY Soln :C 90. SI GK‡K cÖgvY Pv‡ci gvb KZ? A. 760 mm (Hg) B.1.01325 105 Nm–2 gm 1.67 10 gm 6.02 10 2.016 24 23 p 1 d1 k 2 d k 2 1 r r 1 2 d d 2 1 d d d 1 d 1 d1 1 d2 1 1 2 1 2 1 2 1 1 d d r r d d r r 0.57 mol 0.0821 298 0.9869 14 RT PV 0.04 mol 0.0821 300 1 1 RT PV 2 2 1 1 P D P D 1 1 2 D P D D 760 2D RT MP 3 2