| 191. Zwor †Kv‡li ivmvqwbK wewµqv †Kvb ai‡bi? K RviY weRviY L ms‡hvRb M we‡qvRb N mgvYyKiY 192. Zwor we‡køl‡Yi mgq avZz †Kv_vq B‡jKUªb Z¨vM K‡i? K A¨v‡bv‡W L K¨v‡_v‡W M Zwor we‡køl¨ N K¨v‡_vW I A¨v‡bvW Df‡q 193. A¨v‡bvW ZworØvi‡K Kx ejv nq? K RviY-ZworØvi L K¨v‡_vW ZworØvi M RviY-weRviY ZworØvi N Zworwe‡køl¨ ZworØvi 194. `ywU Zwor we‡kø‡l¨i ms‡hvM ¯’vc‡bi Rb¨ †KvbwU e¨envi Kiv nq? K jeY ‡mZz L ZviRvwj M †mj †gg‡eªbN Zworwe‡køl¨ ZworØvi 195. Zworwe‡køl¨ c`v‡_©i NbgvÎv wb‡`©‡ki †ÿ‡Î †KvbwU e¨envi Kiv nq? K ( ) L [ ] M { } N || || 196. RvwiZ nIqvi c~‡e©j Ae¯’vb hw` M¨vm Zij ev Avqb nq Z‡e RviY ZworØv‡ii c~‡e© †KvbwU e¨envi Kiv nq? K Hg L Pt M Mo N Nb 197. cÖgvY ZworØvi wefe‡K †KvbwU Øviv cÖKvk Kiv nq? K E L H M H0 N Hcell 198. cixÿvaxb †gŠ‡ji cÖavb ZworØv‡ii hy³ ZworØvi‡K Kx e‡j? K cÖgvY †idv‡iÝ ZworØvi L †idv‡iÝ ZworØvi M cÖgvY ZworØvi N K¨v‡jv‡gj ZworØvi 199. ‡KvbwU †idv‡iÝ ZworØvi wn‡m‡e KvR K‡i? K Pt, H2(g)/H+ (aq) L Pt, Fe2+(aq)/Fe3+(aq) M Hg(Ɩ), Hg2Cl2(s)/Cl– N Hg(Ɩ), Hg2SO4(s)/SO4 2– (aq) 200. wbw`©ó cwigvY B‡jKUªb ¯’vbvšÍ‡ii Rb¨ †h cwigvY Zwor cÖevwnZ n‡e Zv Kx‡mi Dci wbf©i K‡i? K ZworØv‡ii wefe cv_©‡K¨i Dci L Zwor we‡kø‡l¨i cÖK…wZi Dci M ZworØv‡ii cÖK…wZi Dci N `ªe‡Yi ZvcgvÎvi Dci 201. KLb †Kvl wef‡ei gvb k~b¨ nq? K wewµqv mvg¨e¯’vq DcbxZ nq L wewµqv †cQ‡bi w`‡K AMÖmi n‡j M wewµqv mvg‡bi w`‡K AMÖmi n‡j N wewµqvi MwZ‡eM k~b¨ n‡j 202. wb‡Pi †Kvb †Kv‡li Zwo”PvjK ej 2 †fvë? K ‡jW mÂqK †Kvl L WªvB‡mj M wjw_qvg e¨vUvwi N wjw_qvg Avqb e¨vUvwi 203. gwiPv †ivaK B¯úv‡Z †KvbwU e¨envi nq bv? K Kve©bL ‡µvwgqvg M wb‡Kj N wR¼ 204. ‡KvbwU gyL¨ wb‡`©kK ZworØvi? K KzBbnvB‡Wªvb ZworØvi L nvB‡Wªv‡Rb ZworØvi M wmjfvi-wmjfvi †K¬vivBW ZworØvi N K¨v‡jv‡gj ZworØvi 205. K¨v‡jv‡gj ZworØv‡i Zworwe‡køl¨ wn‡m‡e ‡KvbwU e¨envi Kiv nq? K Hg2Cl2 L KCl M Cu ¸uov N HgO 206. M¨vjfv‡bvwgUv‡i we‡ÿc k~b¨ n‡jK M¨vjfv‡bvwgUvi APj n‡q c‡o L M¨vjfv‡bvwgUv‡ii Zwor cwienb nq bv M M¨vjfv‡bvwgUv‡ii wefe k~b¨ nq N M¨vjfv‡bvwgUv‡i wefe abvZ¥K nq 207. `ªe‡Y avZe Avq‡bi msL¨v e„w× †c‡j Zvi Am‡gvwUK PvcK e„w× cvq L n«vm cvq M AcwiewZ©Z _v‡K N cÖ_‡g e„w× cvq c‡i n«vm cvq 208. weÁvwb bvb©÷ K‡e Zvi ZË¡ cÖ`vb K‡ib? K 1889 L 1989 M 1789 N 1879 209. jeY †mZzi g‡a¨ †KvbwU e¨envi Kiv nq? K KNO3 L NaCl M MgCl2 N AlCl3 210. Ôbvb©‡÷i ZË¡ Abyhvqx avZz ev H2 Gi wKQz Ask `ªe‡Y ev ¯^ ¯^ abvZ¥K Avqb wn‡m‡e P‡j hvIqvi cÖeYZv Kx e‡j? K `ªeY Pvc L Am‡gvwUK Pvc M ev®úxq Pvc N M¨vmxq Pvc 211. avZz‡K ev H2 †K hLb je‡Yi `ªe‡Yi g‡a¨ Wzev‡bv nq ZLb Gi Dci Gi Avqb mwÂZ nIqvi cÖeYZv‡K Kx e‡j?
| K ev®úxq Pvc L Am‡gvwUK Pvc M `ªeY Pvc N M¨vmxq Pvc 212. avZzi ZworØvi wef‡ei gvb Zvi `ªeY Pvc I Zvi Avq‡bi Am‡gvwUK Pv‡ci cv_©‡K¨iK mgvbL A‡a©K M ‡_‡K 1 Kg N †_‡K 1 †ewk 213. avZzi `ªeY Pvc Zvi Avq‡bi Am‡gvwUK Pvc A‡cÿv A‡cÿvK…Z Kg n‡j †KvbwU N‡U? K avZe Avqb `ªæZ ZworØv‡i cwie¨vß nq L avZz avZe Avqb wn‡m‡e `ªe‡Y cÖ‡ek K‡i M ZworØvi FYvZ¥K Pv‡R© PvwR©Z nq N avZz B‡jKUªb Z¨vM K‡i 214. ZworØvi wefe KZ cÖKvi? K wZb L Pvi M cvuP N `yB 215. ‡KvbwU fzj? K Zwo”PvjK ej n‡jv `ywU ZworØv‡ii wef‡ei †hvMdj L B‡jKUªb Z¨v‡Mi d‡j RviY wefe m„wó nq M B‡jKUª‡bi MÖn‡Yi d‡j weRviY wefe m„wó nq N `ywU ZworØv‡ii wefe cv_©K¨B n‡jv Zwo”PvjK ej 216. ‡Kvb mgxKiYwU‡K mwVK ejv hv‡e bv? K G = G + RT InK L Ecell = ERight(red) – ELeft(ox) M log nF 2.303RT Ecell E cell Drcv` Avq‡bi NbgvÎv wewµqK Avq‡bi NbgvÎv N log 2 0.592 Ecell E cell wewµqK Avq‡bi NbgvÎv Drcv` Avq‡bi NbgvÎv 217. ‡Kv‡li wewµqv KLb ¯^Ztù~Z© nq? K E‡Kvl abvZ¥K n‡j L E‡Kvl FYvZ¥K n‡j M E‡Kvl abvZ¥K n‡j N E‡Kvl FYvZ¥K n‡j 218. Zn(s)/Zn2+(aq)||Cu2+(aq)/Cu(s) †Kv‡li RviY wef‡ei gvb h_vµ‡g +0.763V Ges –0.34V| Gi Zwo”PvjK ej KZ? K –1.103V L 1.103V M 0.423V N –0.423V 219. jeY †mZz mvaviYZ †Kgb AvK…wZi nq? K U L Dëv U M V N Dëv V 220. jeY †mZz GKwUK c‡ivÿ ms‡hvM L cÖZ¨ÿ ms‡hvM M cÖwZeÜb N B‡jK‡UªvW 221. ‡KvbwU fzj? K Zwor we‡køl‡Y RviY Aa©‡Kv‡l K¨vUvq‡bi AvwaK¨ N‡U L jeY †mZz †Kv‡li `ªe‡Yi c‡ivÿ ms‡hvM M jeb †mZz‡Z KCl, KNO3, Na2SO4 BZ¨vw`i `ªeY e¨envi Kiv nq N jeY †mZz †Kv‡li cÖevn eÜ K‡i 222. Fe+CuSO4 = FeSO4 + Cu G wewµqvwUi †ÿ‡Î Fe2+/Fe I Cu2+/Cu Gi weRviY wefe h_vµ‡g – 0.44V I +0.34V. MwVZ †Kv‡li †ÿ‡Î †KvbwU mwVK? K ‡Kvl wewµqv ¯^Ztù~Z© n‡e L †Kvl wewµqv ¯^Ztù~Z© bq M †Kvl wef‡ei gvb FYvZ¥K N Wvb ZworØv‡i RviY N‡U 223. 25C ZvcgvÎvq 0.2M Ag+ `ªe‡Yi Ag ZworØvi Wzev‡j ZworØvi wefe KZ n‡e? K – 0.8403VL – 0.8404 V M 0.1013V N – 0.1013 V 224. ‡h ZworØvi e¨envi K‡i ARvbv ZworØv‡ii wefe wbY©q Kiv nq Zv‡K Kx e‡j? K K¨v‡jv‡gj ZworØvi L KzBbnvB‡Wªvb ZworØvi M wb‡`©kK ZworØvi N cÖgvY ZworØvi 225. ‡KvbwU K¨v‡jv‡gj? K Hg2Cl2 L KCl M Hg N Na–Hg 226. Zn/Zn2+(0.15M) || Cu2+(0.1M) | C †Kv‡l wewµqvi d‡j Kx cwigvY gy³kw³i cwieZ©b NU‡e| ‡hLv‡b †Kv‡li RviY I weRviY wefe h_vµ‡g 0.76V I 0.34V| K –1.10kJ L 0.76 kJ M –0.46kJ N –212.3 kJ 227. Zn/Zn2+=0.76V| G Zwor Øvi‡K nvB‡Wªv‡Rb ZworØv‡ii mv‡_ hy³ Ki‡j wefe KZ n‡e? K –0.76V L –0.34V M 0.76 V N 1.10 V
| 228. 25C ZvcgvÎvq Ni(s)/Ni2+ (0.15M) || Ag+ (0.25M)/Ag(s) †KvlwUi Zwo”PvjK ej KZ? †hLv‡b, Ni(s)/Ni2+(aq) = 0.25V| Ag+ /Ag = 0.799 V| K 1.13V L 2.10V M 1.006 V N –1.10V 229. Cu/Cu2+ (0.15M)/Ag+ (0.1M)/Ag †Kv‡li Zwo”PvjK ej KZ? †hLv‡b E 0.799V Ag /Ag E 0.337V Cu /Cu 2 . K 1.54V L 0.412V M 0.427 V N 1.097 V 230. M¨vjfvwbK †Kv‡l abvZ¥K ZworØviK A¨v‡bvW bv‡g cwiwPZ L K¨v‡_vW wn‡m‡e e¨envi nq M A¨vbvqb‡K AvKl©Y K‡i N B‡jKUªb Z¨vM K‡i RvwiZ nq 231. wb‡Pi †KvbwU abvZ¥K I FYvZ¥K Avqb m„wói gva¨‡g m¤úbœ n‡Z cv‡i? K Zwor cwienb L Av‡jvi we”QziY M kã Zi½ cwienb N Av‡jvi wewKiY 232. Zwor we‡køl‡Yi mgq Zwor we‡kø‡l¨i g‡a¨ Wzev‡bv avZe `Û mg~n‡K Kx e‡j? K jeY †mZz L ZworØvi M e¨vUvix N K¨v‡_vW 233. ‡KvbwU fzj? K K¨v‡_vW w`‡q B‡jKUªb `ªe‡Y cÖ‡ek K‡i L K¨v‡_vW e¨vUvwii FYvZ¥K cÖv‡šÍi mv‡_ hy³ _v‡K M A¨v‡bvW e¨vUvwii FYvZ¥K cÖv‡šÍi mv‡_ hy³ _v‡K N A¨v‡bvW Øviv B‡jKUªb `ªeY †Q‡o P‡j hvq 234. nvB‡Wªv‡Rb ZworØv‡i B‡jK‡UªvW wn‡m‡e †KvbwU e¨envi Kiv nq? K Au L Pt M Ag N Mo 235. Zwor wefe wbY©q Ki‡Z †Kv‡l †KvbwU e¨envi Kiv nq? K A¨vwgUvi L †fvëwgUvi M †MvjvwiwgUviN g‡bvwgUvi 236. ‡KvbwU‡K DfqgyLx ZworØvi ej‡j fzj n‡e? K avZz avZe Avqb ZworØvi L A¨vgvjMvg ZworØvi M K¨v‡jv‡gj ZworØvi N nvB‡Wªv‡Rb ZworØvi 237. DfgyLx ZworØvi‡K KqwU †kÖwY‡Z fvM Kiv nq? K 2wU L 3wU M 4wU N 5wU 238. ‡KvbwU cÖ_g †kÖwYi ZworØvi ej‡j fzj n‡e? K Zn(s)/Zn2+(aq) L Cu(s)/Cu2+(aq) M Fe(s)/Fe2+(aq) N Pt, Hg(Ɩ)/Hg2Cl2(s)/KCl(aq) 239. ‡KvbwU avZz I avZe Avqb ZworØvi e¨ZxZ Ab¨ ZworØvi? K Zn(s)/Zn2+(aq) L Fe(s)/Fe2+(aq) M Cu(s)/Cu2+ N Ag(s)/AgCl(s)/HCl(aq) 240. ‡KvbwU A¨vgvjMvg ZworØvi ej‡j mwVK n‡e bv? K Hg–Li(s)/Li2+(aq) L Hg–Na(s)/Na+ (aq) M Hg(Ɩ)/Hg2Cl2(s)/KCl(aq) N Hg–K(s)/K+ (aq) 241. ‡KvbwU e¨wZµg? K Ag(s)/AgCl(s)/HCl(aq) L Pt, Hg(Ɩ)/Hg2Cl2/KCl(aq) M Pt, H2(g)/HCl(aq)/H2(g) Pt N Al(s)/AlCl3(s)/HCl 242. Pt, Fe2+(aq)/Fe3+(aq) ZworØviwUi †ÿ‡Î †KvbwU wg_¨v? K ZworØv‡i RviY N‡U‡Q L ZworØviwUi wewµqv Dfq w`K NU‡Z cv‡i M wbw®Œq avZz ˆe`y¨wZK ms‡hvM m„wó K‡i N wecixZ w`‡K AMÖmi n‡Z cv‡i bv 243. KzBbnvB‡Wªvb ZworØv‡iK RviY-weRvi‡Y N‡U L wØcÖwZ¯’vcb N‡U M cvwb †hvRb N‡U N cÖkgb N‡U 244. KzB‡bv‡bi MvVwbK ms‡KZ †KvbwU? K O O L OH OH
| M O H O O H O ----- ----- N O OH 245. ‡KvbwU †_‡K `ªe‡Y mg‡gvjvi KzB‡bvb I nvB‡WªvKzB‡bvb cvIqv hvq? K KzBbnvB‡WªvbL c¨v‡iv‡K¬v‡iv nvB‡Wªvb M WvB †K¬v‡iv nvB‡Wªvb N WvB KzB‡bvb 246. KzBb nvB‡Wªvb B‡jK‡Uªv‡Wi Zwo”PvjK ej KZ? K 3.10V L 2.10 V M 0.28 V N 0.76 V 247. ‡KvbwU cÖgvY nvB‡Wªv‡Rb ZworØv‡ii pH wbY©‡qi e¨envi nq? K 0.0591 E 0.2415 pH cell L 0.059 E pH cell M 0.0591 E E E pH SCE G cell N 0.0591 0.4581 E pH cell 248. ‡KvbwU avZz I avZe Avqb ZworØvi? K Pt, Fe2+(aq)/Fe3+(aq) L Pt, Ag(s)/AgCl(s)/HCl M Pt, Hg(Ɩ)/Hg2Cl2(s)/KCl(aq) N Zn(s)/Zn2+(aq) 249. ‡KvbwU wg_¨v? K `ªeY Pvc Am‡gvwUK Pvc = RviY ZworØvi L `ªeY Pvc Am‡gvwUK Pvc = RviY ZworØvi M `ªeY Pvc Am‡gvwUK Pvc = weRviY ZworØvi N Zwo”PvjK ej = RviY wefe + weRviY wefe 250. ZworØvi MV‡bi mgq jNy H2SO4 e¨envi Kiv nq †Kb? K jNy Gwm‡Wi RviY ag© †ewk L jNy Gwm‡Wi RviY ag© Kg e‡j M jNy Gwm‡W AwaK cwigvY Avqb _v‡K N jNy GwmW avZzi je‡Yi mv‡_ wewµqv K‡i bv e‡j 251. ‡KvbwU mwVK? K AwaK mwµq avZzi `ªeY Pvc †ewk L Kg mwµq avZzi `ªeY Pvc †ewk M AwaK mwµq avZz K¨v‡_vW wn‡m‡e e¨eüZ nq N Kg mwµq avZzi Am‡gvwUK Pvc Kg 252. `ªeY Pvc Am‡gvwUK Pvc A‡cÿv eo n‡j wb‡Pi †KvbwU mwVK? K avZz avZe Avqb wn‡m‡e `ªe‡Y `ªexf~Z nq L avZe cvZ K¨v‡_vW wn‡m‡e KvR K‡i M avZe Avqb avZe cv‡Zi Mv‡q Rgv nq N avZe cvZ w`‡q B‡jKUªb `ªe‡Y †Q‡o hvq 253. wR¼ mvj‡dU (ZnSO4) eY©nxb †Kb? K Zn MÖæc IIB G Aew¯’Z e‡j L Zn Ae¯’všÍi †gŠj e‡j M RviYgvb w¯’i e‡j N dvuKv 4 AiweUvj †bB e‡j 254. jeY †mZzi Rb¨ †KvbwU e¨envi Kiv hv‡e bv? K LiCl L KCl M KNO2 N NH4NO3 255. Zwor †Kv‡l ivmvqwbK kw³ †_‡K we`y¨r Drcbœ Kivi mgq wewµqv N‡U? K RviY L weRviY M ms‡hvRb N †iW· 256. Zwor we‡kølYKv‡j ‡KvbwU N‡U? K A¨v‡bvW ÿq cÖvß nq L K¨v‡_vW ÿqcÖvšÍ nq M A¨vbvqb K¨v‡_v‡W B‡jKUªb †Q‡o †`q N A¨v‡bvW B‡jKUªb MÖnY K‡i 257. W¨vwb‡qj †Kv‡l A¨v‡bvW wn‡m‡e †KvbwU e¨envi Kiv nq? K Zn L Cu M Ag N Hg 258. ‡jKj¨vÝ †m‡j MnO2 †Kb e¨envi Kiv nq? K A¨v‡bvW wn‡m‡e L B‡jK‡UªvjvBU wn‡m‡e M B‡jK‡UªvjvB‡Ui ZijZv e„wׇZ N †Kv‡li †cvjvqb wµqv `~i Ki‡Z 259. B‡jK‡UªvjvBwUK †Kvl GKwUK wØcÖ‡Kvô †Kvl L GK cÖ‡Kvô †Kvl M ¯^Ztù~©Z wewµqv N B‡jKUªwbK †Kvl 260. B‡jK‡UªvjvBwUK ‡Kv‡li †ÿ‡Î †KvbwU fzj? K Zwor kw³ ivmvqwbK kw³‡Z cwiYZ nq L Zworwe‡køl¨ c`v‡_©i ˆewk‡ó¨i cwieZ©b N‡U M A¨v‡bvW FYvZ¥K Ges K¨v‡_vW abvZ¥K N B‡jKUª‡bi cÖev‡ni wecixZ w`‡K Zwor cÖevwnZ nq
| 261. B‡jK‡UªvjvBUK ‡Kv‡li A¨v‡bv‡W †KvbwU NUv Am¤¢e? K Cl– – e – Cl L Na Na+ + e M Zn Zn2+ + 2e– NCu2+(aq)+ 2eCu(s) 262. ZworØvi A¨v‡bvW bv K¨v‡_vW Zv †KvbwUi Dci wbf©i K‡i? K Zwor we‡kø‡l¨i cÖK…wZi Dci L A¨v‡bv‡Wi cÖK…wZi Dci M K¨v‡_v‡Wi cÖK…wZi Dci N Aa©wewµqvi cÖK…wZi Dci 263. ‡KvbwU‡K Zworwe‡køl¨ †Kvl e¨envi Kiv nq? K UP© jvBU L CD †cøqv‡i R¡vjv‡bv M B‡j‡±ªv‡cøwUs N wewfbœ B‡jKUªwbK †Ljbv Pvjv‡bv 264. B‡jK‡UªvjvBwUK Ki‡Z †Kvb avZzi cÖ‡jc e¨envi Kiv nq? K Zn L Cu M Ag N Fe 265. weø÷vi Kcv‡i KZ kZvsk Kcvi _v‡K? K 98-99.5% L 96-98% M 91-96% N 95-96% 266. B‡jK‡UªvjvBwUK †Kv‡l Kxfv‡e kw³ Drcbœ nq? K ¯^Ztù~Z© †iW· wewµqv L A¯^Ztù~Z© †iW· wewµqv M wbDwK¬qvi wewµqv N ¯^Ztù~Z© RviY wewµqv 267. ﮋ †Kv‡l Kx ai‡bi B‡jK‡UªvjvBU e¨envi Kiv nq? K Zij L M¨vmxq M †c÷ N KwVb 268. M¨vjfvwbK †Kv‡li †ÿ‡Î ‡KvbwU wg_¨v? K ¯^Ztù~Z© RviY-weRviY N‡U L ivmvqwbK kw³ Zwor kw³‡Z iƒcvšÍwiZ nq M wm‡÷g cwi‡e‡ki Dci wµqv K‡i N A¨v‡bvW abvZ¥K Ges K¨v‡_vW FYvZ¥K PvR©hy³ 269. ‡KvbwU‡Z B‡jK‡UªvjvBwUK †mj e¨envi Kiv nq? K UP©jvBU L CD †cøqvi M wewfbœ ˆe`y¨wZK hš¿ N avZz wb®‹vkb 270. W¨vwb‡qj †Kv‡li Zwo”PvjK ej †KvbwUi Dci wbf©i K‡i? K ZworØv‡ii ivmvqwbK cwieZ©‡bi Dci L Zwor we‡kø‡l¨i Dci M ZworØv‡ii cÖK…wZi Dci N Zwor we‡kø‡l¨i NbgvÎvi Dci 271. W¨vwb‡qj †m‡ji wefe cv_©K¨ KZ? K 1.1 V L 2.1V M 3.1 V N 1.17 V 272. M¨vjfvwbK †m‡j e¨eüZ cv‡Îi †ÿ‡Î †KvbwU wg_¨v? K ZnSO4 `ªeY _v‡K L B‡jKUªb PjvPj Ki‡Z cv‡i M Avqb PjvPj Ki‡Z cv‡i bv N Avqb PjvPj Ki‡Z cv‡i 273. Zwor we‡kølY †Kv‡lK Avqb cÖev‡ni wecixZ w`‡K Zwor cÖevwnZ nq L A¨v‡bvW abvZ¥K Avavb hy³ M ivmvqwbK kw³ Zwor kw³‡Z iƒcvšÍwiZ nq N K¨v‡_vW abvZ¥K hy³ 274. M¨vjfvwbK †Kv‡lK A¨v‡bvW I K¨v‡_vW wbw`©ó L A¨v‡bvW abvZ¥K Avavbhy³ M B‡jKUª‡bi cÖev‡ni wecixZ w`‡K Zwor cÖevwnZ nq N Zwor kw³‡K ivmvqwbK kw³‡Z iƒcvšÍwiZ Kiv nq 275. M¨vjfvwbK †Kv‡lK Zworwe‡køl¨ c`v_© _v‡K bv L Zwo”PvjK e‡ji gvb ZworØv‡ii ivmvqwbK cwieZ©‡bi gvÎvi Dci wbf©i K‡i bv M ¯^Ztù~Z© RviY-weRviY N‡U bv N A¨v‡bv‡W RviY Ges K¨v‡_v‡W weRviY N‡U 276. ‡KvbwU wfbœ cÖK…wZi? K WªvB‡mj L †jW †÷v‡iR e¨vUvwi M wjw_qvg Avqb e¨vUvwi N wjw_qvg e¨vUvwi 277. ‡KvbwU‡Z evB‡i †_‡K ivmvqwbK kw³ mwÂZ Kiv nq? K ‡jW †÷v‡iR e¨vUvwi L M¨vjfvwbK †Kvl M WªvB‡mj N Zwor we‡kølY †Kvl 278. ‡jW †÷v‡iR e¨vUvwi‡Z †KvbwU A¨v‡bvW wn‡m‡e e¨envi Kiv nq? K ‡jW Avqb L †jW avZz M wj_v©R N †jW mvj‡dU 279. ‡KvbwU‡K wj_v©R e‡j? K PbSO4 L Pb
| M PbO2 N PbCl2 280. ‡jW †÷v‡iR e¨vUvwi‡Z H2SO4 Gi Av‡cwÿK ¸iæZ¡ KZ? K 2.15 L 1.15 M 0.115 N 1.95 281. ‡jW †÷v‡iR e¨vUvwii PvwR©Z Ae¯’v †KvbwU? K Pb(s)/H2SO4 hv PbSO4 Øviv m¤ú„³ | PbO2(s) Pb(s) L Pb(s)/PbSO4 hv H2SO4 Øviv m¤ú„³ | PbO2(s) Pb(s) M Pb(s).PbO2(s) | Pb(s)/PbSO4 hv H2SO4 Øviv m¤ú„³ N Pb(s).PbO2(s) | Pb(s)/H2SO4 hv PbSO4 Øviv m¤ú„³ 282. ‡jW †÷v‡iR e¨vUvwi‡Z †KvbwU Zworwe‡køl¨ wn‡m‡e e¨envi Kiv nq? K PbSO4 L PbO2 M H2SO4 N PbCl2 283. ‡jW †÷v‡iR e¨vUvwii Zwo”PvjK ej KZ? K 1.10 V L 2.10 V M 1.15 V N 2.03 V 284. e¨vUvwi‡K Pv‡R©i mgq wb‡Pi †Kvb wewµqvwU N‡U? K Pb + PbO2(s) + 4H+ + 2SO4 2PbSO4(s) + 2H2O L PbSO4(s) + 2H2O Pb(s) + PbO2(s) + 4H+ + 2SO4 2– M PbO2 + H2SO4 PbSO4(s) + H2O N 2H2SO4 4H+ + 2SO2– 285. GKwU Mvwo‡Z 2V †fv‡ëi 6wU †Kvl mgvšÍivj mw¾Z K‡i ivLv n‡q‡Q| e¨vUvwi‡Z †gvU KZ †fvë Zwo”PvjK ej Drcbœ nq? K 2 †fvë L 3 ‡fvë M 6 †fvë N 12 †fvë 286. ‡jW †÷v‡iR e¨vUvwi‡Z e¨eüZ H2SO4 Gwm‡Wi NbgvÎv KZ _v‡K? K 2M L 1M M 0.5M N 4.5 M 287. wWmPv‡R©i mgq A¨v‡bvW I K¨v‡_vW Dfq wewµqvq HSO4 Ask MÖnY K‡i †Kb? K H2SO4 kw³kvjx GwmW e‡j L H2SO4 †cÖvUb Z¨vM K‡i e‡j M HSO4 GwmW wn‡m‡e KvR K‡i e‡j N HSO4 ÿviK wn‡m‡e KvR K‡i e‡j 288. ‡jW †÷v‡i‡Ri †ÿ‡Î †KvbwU fzj? K ‡jW †÷v‡iR e¨vUvwi‡Z Dfq Aa©‡Kv‡l Pb2+ Drcbœ nq L A¨v‡bvW Pb Gi Rvi‡Y Pb2+ Avqb Drcbœ nq M Pb2+ Avqb HSO4 Gi mv‡_ wewµqvq A`ªeYxq PbSO4 Drcbœ K‡i N K¨v‡_v‡W PbO2 Gi Rvi‡Y Pb2+ Avqb Drcbœ nq 289. weÁvbx cøv›U KZ mv‡j †jW †÷v‡iR e¨vUvwi Avwe®‹vi K‡ib? K 1834 mv‡j L 1833 mv‡j M 1859 mv‡j N 1869 mv‡j 290. wjw_qv‡gi †ÿ‡Î †KvbwU mwVK? K cvwb‡Z fvm‡Z cv‡i bvL fvix avZz M AZ¨šÍ mwµq avZz N Amwµq avZz 291. wjw_qvg e¨vUvwi Kq ai‡bi n‡q _v‡K? K `yB L wZb M Pvi N cvuP 292. wjw_qvg e¨vUvwi‡Z KZ ch©šÍ wefe cv_©K¨ m„wó n‡Z cv‡i? K 0.1-0.2 V L 1.0-3.0 V M 1.5-3.0 V N 2.0-3.0 V 293. ‡KvbwU wiPv‡R©i cÖ‡qvRb c‡o bv? K wjw_qvg e¨vUvwi L wjw_qvg Avqb e¨vUvwi M ‡jW †÷v‡iR e¨vUvwi N gviKvwi e¨vUvwi 294. wjw_qvg Avqb e¨vUvwi‡Z wb‡Pi †KvbwU K¨v‡_vW wn‡m‡e e¨eüZ nq bv? K LiCoO2 L LiMn2O4 M LiNiO2 N LiClO4 295. ‡KvbwU mvjwdDwiK Gwm‡Wi NbgvÎv cwigv‡Y e¨envi Kiv nq? K e¨v‡ivwgUvi L nvB‡WªvwgUvi M _v‡gv©wgUvi N †cvjvwiwgUvi 296. wjw_qvg e¨vUvwi‡Z 6.94 g wjw_qvg †_‡K KZ d¨viv‡W we`y¨r Drcbœ nq? K 0.5 F L 1 F M 0.1 F N 10 F 297. ‡KvbwU K¨vjKz‡jU‡i e¨envi Kiv nq? K ‡jW †÷v‡iR e¨vUvwi L wjw_qvg e¨vUvwi M wjw_qvg †÷v‡iR e¨vUvwi N wjw_qvg RST e¨vUvwi 298. nvU© †cP‡gKviiƒ‡c †KvbwU e¨eüZ nq? K wjw_qvg SVO e¨vUvwi L wjw_qvg Avqb e¨vUvwi M †jW †÷v‡iR e¨vUvwi N wjw_qvg RST e¨vUvwi 299. wjw_qvg Avqb e¨vUvwi Zworwe‡køl¨ wn‡m‡e †KvbwU e¨envi Kiv nq bv? K WvBwg_vBj Kve©‡bU L B_vBj wg_vBj Kve©‡bU
| M wjw_qvg Avqib dm‡dU N wjw_qvg cvi‡K¬v‡iU 300. ‡jW †÷v‡iR e¨vUvwi‡Z Zwor cÖevn cvIqv hvq bv KLb? K mg¯Í Pb Ges PbO2, PbSO4 †Z iƒcvšÍwiZ n‡j L mvjwdDwiK Gwm‡Wi NbgvÎv †e‡o †M‡j M PbSO4 e¨vUvwii Zjvq Rgv n‡j N e¨vUvwii emf Gi gvb 2V Gi Kg n‡j 301. ‡jW ‡÷v‡iR e¨vUvwi wiPvR© Kivi mgqK PbO2 †cøU we`y¨r Dr‡mi FYvZ¥K cÖv‡šÍi mv‡_ hy³ Kiv nq L Aa©‡Kvl wewµqv D‡ëvfv‡e msNwUZ nq M Pb †cøU‡K FYvZ¥K cÖv‡šÍi mv‡_ mshy³ Kiv nq N PbO2 I Pb, PbSO4 – †Z iƒcvšÍwiZ nq 302. hLb †Kvl Zwor Drcbœ K‡i ZLb Zv‡K Kx e‡j? K PvwR© L wWmPvwR© M evwjKs N wewìs 303. ‡Kv‡li `ÿZv n‡jvK PvwR©s nIqvi nvi L wWmPvwR© nIqvi nvi M Pv‡R©i mgqKvj- wWmPv‡R©i mgqKvj N Pv‡R©i mgqKv‡j Mo †fv‡ëR mv‡c‡ÿ wWmPvwR© nIqvKvjxb Mo †fv‡ëR 304. ‡jW †÷v‡iR e¨vUvwii Af¨šÍixY †iva KZ? K cÖvq 0.01 ohm L cÖvq 0.1 ohm M cÖvq 1.0 ohm N cÖvq 0.001 ohm 305. ‡KvbwU Zzjbvg~jKfv‡e nvjKv? K ‡jW e¨vUvwi L wb‡Kj e¨vUvwi M wjw_qvg e¨vUvwi N gviKvwi e¨vUvwi 306. Now‡Z e¨eüZ e¨vUvwii Af¨šÍixY †iva KZ? K cÖvq 100 ohm L cÖvq 200 ohm M cÖvq 10 ohm N cÖvq 50 ohm 307. AvUwU 1.5 V ﮋ †Kv‡li mgZzj¨ †jW †÷v‡iR e¨vUvwii wefe KZ? K 8 V L 1.5 V M 12 V N 6 V 308. ‡KvbwUi PvR© †j‡fj mn‡RB Rvbv hvq? K A¨vjKvjvBb e¨vUvwi L wjw_qvg e¨vUvwi M K¨vWwgqvg e¨vUvwi N †jW †÷v‡iR e¨vUvwi 309. mvaviYZ ‡jW †÷v‡iR e¨vUvwii IRb KZ? K 20-30 cvDÛ L 30-50 cvDÛ M 30-60 cvDÛ N 40-60 cvDÛ 310. wjw_qvg e¨vUvwi †_‡K †Kvb M¨vm wbM©Z nq? K O2 L H2 M N2 N CO2 311. ‡KvbwU Zzjbvg~jKfv‡e ¯’vqx? K wb‡Kj e¨vUvwi L †jW e¨vUvwi M wjw_qvg e¨vUvwi N gviKvwi e¨vUvwi 312. wjw_qvg Avqb e¨vUvwi‡Z †KvbwU e¨envi Kiv nq? K LiNiO2 L LixC6 M Ag2V4O11 N LiClO4 313. dz‡qj †mj cÖ_g Avwe®‹vi K‡ib †Kvb weÁvbx? K m¨vi DBwjqvg ievU© L m¨vi ievU©mb M m¨vi n¨vÛvimb N m¨vi gvB‡Kj nvU© 314. dz‡qj †mj KZ cÖKvi? K 2 cÖKvi L 3 cÖKvi M 4 cÖKvi N 5 cÖKvi 315. ‡KvbwU‡K mivmwi dz‡qj †m‡ji R¡vjvwb wn‡m‡e e¨envi Kiv nq? K wg_vbj L wg‡_b M ‡cÖv‡cb N weD‡Ub 316. ‡KvbwU ms‡køl M¨vm? K (CO+3H2) L (H2+CO2) M (N2+CO) N (N2+CO2) 317. dz‡qj †m‡j ‡KvbwU Zworwe‡køl¨ wn‡m‡e e¨eüZ nq? K Rjxq KOH L Rjxq NaCl M Rjxq Mg(OH)2 N ZnSO4 `ªeY 318. DMFC G e¨eüZ dz‡qj †m‡ji †ÿ‡Î †KvbwU wg_¨v? K dz‡qj mnR jf¨ L wbivc` M msiÿ‡Y AwaKZi myweavRbK N wb¤œ GbvwR© NbZ¡ 319. dz‡qj †m‡j cÖfveK wn‡m‡e †KvbwU e¨envi Kiv nq? K MÖvdvBU Kve©b L Avqib M gwje‡Wbvg N cøvwUbvg 320. dz‡qj †m‡j †KvbwU weRviK wn‡m‡e e¨eüZ nq? K KOH L H2 M O2 N H2O 321. dz‡qj †m‡j †KvbwU DcRvZ wn‡m‡e Drcbœ nq? K H2O L CH2OH M KOH N CH3CH2CH3
| 322. dz‡qj †m‡j wbiew”Qbœ we`y¨r Drcv`b †KvbwUi Dci wbf©i K‡i? K dz‡q‡ji mieiv‡ni Dci L A¨v‡bv‡Wi cÖK…wZi Dci M K¨v‡_v‡Wi cÖK…wZi Dci N cÖfveK e¨env‡ii Dci 323. dz‡qj †m‡ji ZvcgvÎv ¸Yv¼ abvZ¥K n‡j †Kv‡li `ÿZv KZ nq? K 100% L 90% M 100% Gi KvQvKvwQ N 100% Gi AwaK 324. dz‡qj †m‡j e¨eüZ B‡jK‡UªvjvB‡Ui †ÿ‡Î †KvbwU cÖ‡hvR¨? K D”P AvqwbK cwievnx L D”P ¯’vwqZ¡ M AcwieZ©bkxj mshyw³ N mn‡R ÿqcÖvšÍ n‡e 325. m¨vi DBwjqvg iev©U KZ mv‡j dz‡qj †mj Avwe®‹vi K‡ib? K 1839 mv‡j L 1835 mv‡j M 1832 mv‡j N 1938 mv‡j 326. dz‡qj j‡K ZvcgvÎvi cwimi Abyhvqx KZ fv‡M fvM Kiv n‡q‡Q? K Pvi fv‡M L wZb fv‡M M cvuP fv‡M N `yB fv‡M 327. 25-100C ZvcgvÎv cwim‡i †Kvb †Kvb dz‡qj †mj e¨envi Kiv nq? K cÖvK…wZK M¨vm Aw·‡Rb dz‡qj †mj L A¨vj‡Kvnj Aw·‡Rb dz‡qj †mj M ev®úxq `kvq M¨v‡mvwj-Aw·‡Rb N nvB‡Wªv‡Rb Aw·‡Rb dz‡qj †mj 328. 100–500C ZvcgvÎv cwim‡i †Kvb dz‡qj †mj e¨eüZ nq? K cÖvK…wZK M¨vm-Aw·‡Rb dz‡qj †mj L M¨vmxq nvB‡WªvKve©b Kve©b g‡bv·vBW dz‡qj †mj M wg_vbj Aw·‡Rb dz‡qj †mj N weD‡Ub Aw·‡Rb dz‡qj †mj 329. (500-1000)C cwim‡i †Kvb dz‡qj †mj fv‡jv KvR K‡i? K wg_vbj Aw·‡Rb dz‡qj †mj L cÖvK…wZK M¨vm Aw·‡Rb dz‡qj †mj M nvB‡Wªv‡Rb Aw·‡Rb dz‡qj †mj N nvB‡Wªv‡Rb Aw·‡Rb dz‡qj †mj 330. wb‡Pi †KvbwU (1000-2000)C cwim‡ii evB‡i e¨eüZ nq? K A¨vj‡Kvnj-Aw·‡Rb dz‡qj †mj L M¨v‡mvwjb-Aw·‡Rb dz‡qj †mj M weD‡Ub-Aw·‡Rb dz‡qj †mj N nvB‡Wªv‡Rb-Aw·‡Rb dz‡qj †mj 331. A¨vjKvBb dz‡qj †m‡ji `ÿZv KZ? K 40% L 55% M 60% N 90% 332. WvB‡i± wg_vbj dz‡qj †m‡ji `ÿZv KZ? K 20-30% L 50-60% M 45-50% N 60-80% 333. cwien‡b ‡cÖvUb G·‡PÄ †gg‡eªb dz‡qj †m‡ji `ÿZv KZ? K 60% L 55% M 30% N 60% 334. 45-50% `ÿZvi dz‡qj †mj †KvbwU? K g‡ëb Kve©‡bU dz‡qj †mj L WvB‡i± Kve©b dz‡qj †mj M WvB‡i± wg_vbj dz‡qj †mj N widigW wg_vbj dz‡qj †mj 335. A¨vjKvwj dz‡qj †m‡j A¨v‡bvW wn‡m‡e †KvbwU e¨envi Kiv nq? K PtL Zn M Ca N Al 336. A¨vjKvwj dz‡qj †m‡j dz‡qj wn‡m‡e †KvbwU e¨envi nq? K KOH L CH3OH M nvB‡Wªv‡Rb N Kve©b WvBA·vBW 337. A¨vjKvwj dz‡qj †m‡j Zworwe‡køl¨ †KvbwU? K Na2CO2 L MgCO3 M H3PO4 N KOH 338. g‡ëb Kve©‡bU dz‡qj †m‡j †KvbwU B‡jK‡UªvW wn‡m‡e e¨envi nq? K PtL Ni M Zn N Cu 339. dz‡qj †m‡ji K¨v‡_vWK abvZ¥K cÖvšÍ L FYvZ¥K cÖvšÍ M A¨v‡bv‡Wi mv‡_ mivmwi hy³ _v‡K N B‡jKUªb Drcbœ K‡i 340. dz‡qj †m‡jK A¨v‡bvW abvZ¥K I K¨v‡_vW FYvZ¥K L Zwor kw³ ivmvqwbK kw³‡Z iƒcvšÍwiZ nq M A¨v‡bvW I K¨v‡_vW mivmwwi hy³ _v‡K N e¨eüZ Zij n‡”Q KwVb, Zij I M¨v‡mi wgkÖY 341. Avwe®‹…Z dz‡qj †mj¸‡jvi g‡a¨ cÖ_g †mj †KvbwU? K nvB‡Wªv‡Rb-Aw·‡Rb dz‡qj †mj
| L cÖvK…wZK M¨vm-Aw·‡Rb dz‡qj †mj M M¨vmxq nvB‡WªvKve©b-Kve©b g‡bv·vBW dz‡qj †mj N weD‡Ub-Aw·‡Rb dz‡qj †mj 342. nvB‡Wªv‡Rb-Aw·‡Rb dz‡qj †m‡ji abvZ¥K ZworØvi ˆZwi Kiv nq †KvbwUi mvnv‡h¨? K wR¼ L MÖvdvBU M Kcvi N wmjfvi 343. nvB‡Wªv‡Rb-Aw·‡Rb dz‡qj †m‡ji abvZ¥K ZworØvi MÖvdvB‡Ui Dci †KvbwUi Av¯ÍiY _v‡K? K wb‡Kj L Kcvi M wR¼ N wUb 344. nvB‡Wªv‡Rb-Aw·‡Rb dz‡qj †m‡j FYvZ¥K ZworØv‡i KZ Pv‡c H2 M¨vm‡K Pvjbv Kiv nq? K 60 atm L 50 atm M 30 atm N 70 atm 345. nvB‡Wªv‡Rb Aw·‡Rb dz‡qj †m‡ji `ÿZv KZ? K 98% L 60% M 100% N 55% 346. nvB‡Wªv‡Rb-Aw·‡Rb dy‡qj †mj‡K KZ N›Uv hver mvaviYZ e¨envi Kiv hvq? K 1000 N›Uv L 100 N›Uv M 500 N›Uv N 50 N›Uv 347. dmdwiK GwmW dz‡qj †m‡j Zworwe‡køl¨ wn‡m‡e †KvbwU e¨envi Kiv nq? K CaO L ZrO2 M KOH N H3PO4 348. dz‡qj wn‡m‡e CaO e¨envi Kiv nq †KvbwU‡Z? K ‡cÖvUb G·‡PÄ †gg‡eªb dz‡qj †mj L mwjW A·vBW dz‡qj †mj M A¨vjKvwj dz‡qj †mj N g‡ëb Kve©‡bU dz‡qj †mj 349. nvB‡Wªv‡Rb dz‡qj †m‡j A¨v‡bv‡Wi ms¯ú‡k© G‡m †KvbwU Drcbœ K‡i? K nvB‡Wªv‡Rb Avqb L B‡jKUªb M Aw·‡Rb Avqb N cvwb 350. wb‡Pi †Kvb wewµqvwU nvB‡Wªv‡Rb †m‡j K¨v‡_v‡W N‡U? K 2H2 4H++2e L O2+4H +2H2O M 2CO2+O2+4e2CO3 2– N 12H++12OH– 12H2O 351. nvB‡Wªv‡Rb †m‡j cÖfveK wn‡m‡e †KvbwU e¨envi nq? K PtL Ni M Fe N Mo 352. nvB‡Wªv‡Rb dz‡qj †m‡ji Zwo”PvjK ej KZ? K 2.10 V L 1.10 V M 1.23 V N 1.392 V 353. cvi‡d¬v‡iv Bw_wjb Gi ms‡KZ †KvbwU? K 2 2 n (F CCF ) L n (FCHCHF) M n (CHFCHF) N CHF3 – CHF2 354. nvB‡Wªv‡Rb dz‡qj me©cÖ_g †Kv_vq e¨eüZ nq? K ÷K b‡fvhv‡b L G‡cv‡jv b‡fvhv‡b M Av‡gwiKvi †g‡Uªv †Uª‡b N ivwkqvi gvb gw›`‡i 355. nvB‡Wªv‡Rb dz‡qj †m‡j †KvbwU DcRvZ wn‡m‡e Drcbœ nq? K H2 L H2O M O2 N H3O + 356. Rvcv‡bv †UvwKI B‡jKwUªK cvIqvi †Kv¤úvwb KZ †gMvIqvU dz‡qj †mj cvIqvi cø¨v›U Kvh©Ki K‡i‡Q? K 15 †gMvIqvU L 12 †gMvIqvU M 11 †gMvIqvU N 13 †gMvIqvU 357. KqjvwfwËK we`y¨r Drcv`b †K‡›`ª Kx cwigvY e¨envi‡hvM¨ kw³ cvIqv hvq? K 75% L 25% M 40% N 60% 358. mvaviY Bwćbi `ÿZv m‡ev©”P KZ? K 40% L 25% M 60% N 98% 359. nvB‡Wªv‡Rb ‡m‡j dz‡q‡ji Drm Kx? K evqy L nvB‡Wªv‡Rb M¨vm M cvwb N Aw·‡Rb 360. ‡c‡Uªvj Bwćbi `ÿZv KZ? K 25% L 20% M 80% N 40% 361. pH wgUv‡i wefe cv_©K¨ gvcvi Rb¨ †KvbwU e¨envi Kiv nq? K ‡fvëwgUvi L A¨vwgUvi M ev‡qvwgUvi N †cvjvwiwgUvi 362. Møvm B‡jK‡UªvW MV‡b †KvbwU Ae¨eüZ _v‡K? K SiO2 L Na2O
| M CaO N MgO 363. Møvm B‡jK‡Uªv‡W SiO2 Kx cwigvY _v‡K? K 72% L 22% M 6% N 20% 364. Møvm B‡jK‡Uªv‡W wb‡Pi †KvbwU 6% e¨envi Kiv nq? K SiO2 L MgO M Na2O N CaO 365. Møvm †gg‡eªb w`‡q †KvbwU Cö‡ek K‡i? K H + L Na+ M O 2– N S 2– 366. B‡jK‡UªvW m„ó wefe †KvbwUi Dci wbf©ikxj? K `ªe‡Yi NbgvÎv L B‡jK‡Uªv‡Wi cÖK…wZ M ZvcgvÎv N Pvc 367. NH4 + Avqb wb‡Pi †Kvb bgybvq cvIqv hvq? K mvgyw`ªK cvwbL i³ M km¨ N `ya 368. f~c„‡ôi cvwb‡Z wb‡Pi Avqb _v‡K? K HCO3 L F – M NO3 N K + 369. i‡³i wmiv‡g †KvbwU Dcw¯’Z? K H + L K + M I – N F – 370. pH gvb wbY©‡qi †ÿ‡Î mvaviY cÖPwjZ c×wZ¸‡jv‡K KqwU †kÖwY‡Z fvM Kiv n‡q‡Q? K `yB L wZb M Pvi N cvuP 371. ‡KvbwU wg_¨v? K 0.05915 E 0.3358 pH ‡&Kvl L 0.05915 E E pH ref ‡&Kvl M log[H ] F 2.303RT EH N E‡Kvl = Eref – EH 372. RviY I weRviY wef‡ei m¤úK© Kxiƒc? K RviY wefe weRviY wefe = 1 L RviY wefe 1 1 weRviY wefe M RviY wefe = – weRviY wefe N weRviY wefe = RviY wefe 373. 1.0 ‡gŠj Al3+ †_‡K Al Drcv`‡b Kx cwigvY ZworPvR© cÖ‡qvRb? K 1.0 F L 2.0 F M 3.0 F N 1.5 F 374. 1.0 †gvj cvwbi Zwor we‡kølY Øviv O2 Drcv`b Ki‡Z A¤øvwqZ cvwb‡Z Kx cwigvY ZworPvR© cÖevwnZ Ki‡Z nq? K 1.0 F L 2.0 F M 1.5 F N 0.5 F 375. B‡jKUªbxq Zwor cwievnx †KvbwU? K FeSO4 `ªeYL NaCl (MwjZ) M Cu N Fe 376. B‡jK‡UªvjvBwUK Zwor cwievnx †KvbwU? K FeSO4(aq)L Fe M Cu N NaCl (MwjZ) 377. wb‡¤œi †KvbwU Zxeª Zwor we‡køl¨? K NaCl (MwjZ) L NH4OH M CH3COOH N HCl (Rjxq) 378. g„`y Zworwe‡køl¨ wPwýZ KiK H2S L HCl M Na2SO4 N CH3COOH 379. 1.0F Zwor PvR© cÖevwnZ Ki‡j Zworwe‡køl¨ c`v_© †_‡K w؇hvRx †gŠ‡ji KZwU cigvYy ZworØv‡i mwÂZ nq? K 6.0231023 L 3.01151023 M 10.0461023 N 1.20461024 380. Zworwe‡køl¨ bq †KvbwU? K cvwb L CuSO4 M Na N H2SO4 381. 30s mg‡qi Rb¨ 5.0A Kv‡i›U cÖevwnZ Ki‡j Zworwe‡køl¨ c`v‡_©i g‡a¨ Zwor PvR© KZ? K 6.0 Kzj¤^ L 150 Kzj¤^ M 95.52 Kzj¤^N 85 Kzj¤^ 382. wb‡¤œi †KvbwU ev †Kvb †KvbwU RviY wm‡÷g? K Zn/Zn2+ L Cu2+/Cu M 2Cl– /Cl2 N Cl2/2Cl–
| 383. Pt, H2/H+ (E=0.0 V) Gi m‡½ A¨v‡bvW wn‡m‡e e¨eüZ nq †KvbwU? K Zn2+/Zn E = – 0.76 V L Ag+ /Ag E = 0.80V M Cu2+/Cu E = +34 V N Fe2+/Fe E = – 0.44 V 384. Zn/Zn2+ (E = – 0.76V) Gi m‡½ wb‡Pi †KvbwU‡K K¨v‡_vW wn‡m‡e e¨envi Kiv hvq? K Mg/Mg2+ E = – 2.37 V L Fe/Fe2+ E = +0.44 V M Na/Na+ E = +2.71 V M Pt, H2(g)/H+ (aq) E = 0 V 385. Mvwo‡Z e¨eüZ †jW mÂqK †Kv‡l gv‡S gv‡S cvwb †`qv nq †Kb? K ‡mj kxZ ivLvi Rb¨ L gqjv cwi®‹vi Kivi Rb¨ M H2SO4 Gi Av‡cwÿK ¸iæZ¡ mwVK ivLvi Rb¨ N `ªe‡Yi pH mwVK ivLvi Rb¨ 386. wKQzw`b e¨envi Ki‡j WªvB‡mj e¨vUvwi †_‡K GK ai‡bi Zij c`v_© †ewi‡q Av‡m †Kb? K evqy‡Z Gi cvÎ ÿq nq e‡j L e¨vUvwii A¨v‡bvW RvwiZ nq e‡j M †fZ‡i ‡Kvb GwmW Drcbœ n‡q †mj cvÎ ÿq nq e‡j N e¨vUvwii `¯Ívi cvÎwU Lye nvjKv e‡j 387. ‡jW mÂqK †Kvb †KvbwU? K Pb/Pb2+ || Cu2+/Cu L Pb/PbSO4(s)/H2SO4 (Rjxq)/PbO2(s)/Pb M Zn/Zn2+ || Pb2+/Pb N Pb/Pb2+ || H+ /H2,Pt 388. gyL¨ wb‡`©kK ZworØvi wn‡m‡e e¨eüZ nq †KvbwU? K cÖgvY nvB‡Wªv‡Rb ZworØvi L K¨v‡jv‡gj ZworØvi M Møvm ZworØviN K¨vWwgqvg ZworØvi 389. ‡h ZworØvi G RviY N‡U Zv‡K ejv nqK K¨v‡_vW L A¨v‡bvW M Gi †KvbwUi bq N abvZ¥K ZworØvi 390. ‡mj wewµqv ¯^Ztù~Z©fv‡e NU‡Z n‡j †mj wef‡ei gvb n‡Z nqK abvZ¥K L FYvZ¥K M †Kvb m¤úK© †bB NabvZ¥K I FYvZ¥K DfqB 391. E 2 0.34V Cu /Cu Ges E 2 0.44V Fe/Fe n‡j wb‡¤œi †KvbwU mwVK? K Zvgvi cv‡Î FeSO4 `ªeY ivLv hvq L Zvgvi cv‡Î FeSO4 `ªeY enb Kiv hvq bv M †jŠn cv‡Î Zzu‡Zi `ªeY enb Kiv hvq N †jŠn cv‡Î Zzu‡Zi `ªeY enb Kiv hvq bv 392. wb‡¤œi †KvbwU g„`y Zworwe‡køl¨? K A¨vj‡Kvnj L Lv`¨ je‡Yi Rjxq `ªeY M Lv`¨ wPwbi Rjxq `ªeY N A¨v‡gvwbqvg Rjxq `ªeY 393. Lv`¨ je‡Yi Rjxq `ªeY‡K Zwor we‡kølY Ki‡j A¨v‡bv‡W GKwU eY©nxb M¨vm wegy³ nq| M¨vmwU Kx? K nvB‡Wªv‡Rb L w÷g M Aw·‡Rb N †K¬vwib 394. wb‡¤œi †KvbwU GKwU Zwrwe‡køl¨ c`v_©? K GKwU GwmW ev ÿvi L GKwU Rjxq `ªeY M GKwU Zij N GKwU KwVb c`v‡_©i MwjZ iƒc 395. A¨vbvqb MwVZ nq, hLbK avZzi cigvYy B‡jKUªb MÖnY K‡i L avZzi cigvYy B‡jKUªb Z¨vM K‡i M AavZzi cigvYy B‡jKUªb MÖnY K‡i N AavZzi cigvYy B‡jKUªb Z¨vM K‡i 396. MwjZ †jW ‡µvgvBWi g‡a¨ w`‡q Zwor cÖevn N‡U wb‡¤œi †KvbwUi Øviv? K gy³ B‡jKUªb Øviv L mÂiYkxj Avqb Øviv M mÂibkxj cigvYy Øviv N †jW cigvYy Øviv 397. ‡Kvb avZe e¯‘‡Z wmjfv‡ii B‡jK‡Uªv‡cøwUs Ki‡Z n‡j wb‡¤œi ‡Kvb e¨e¯’vwU mwVK? K¨v‡_vW A¨v‡bvW Zworwe‡køl¨ K wmjfvi avZe e¯‘ jNy H2SO4 L avZe e¯‘ Kve©b jNy H2SO4 M avZe e¯‘ wmjfvi AgNO3 `ªeY N wmjfvi avZe e¯‘ AgNO3 `ªeY 398. Kcvi ZworØvi e¨envi K‡i Kcvi mvj‡d‡Ui A¤øvwqZ Rjxq `ªe‡Y Zwor cÖevwnZ Kiv nq| cÖevwnZ Zwor Kv‡i‡›Ui gvb w¯’i _vK‡j Kcvi K¨v‡_v‡Wi fi †h cwieZ©b N‡U Zv wb‡¤œi †Kvb MÖvdwUi m‡½ msMwZc~Y©?
| Cu K¨v‡_vW RviY mgq Cu K¨v‡_vW RviY Cu K¨v‡_vW RviY Cu K¨v‡_vW RviY mgq mgq mgq wPÎ bs 1 wPÎ bs 2 wPÎ bs 3 wPÎ bs 4 K 1bs wPÎ L 2 bs wPÎ M 3bs wPÎ N 4bs wPÎ 399. MwjZ A¨vjywgwbqvg A·vBW‡K Zwor we‡kølY K‡i Al avZz wb®‹vkb Kiv nq| wfbœ wfbœ mg‡qi Rb¨ MwjZ Al2O3 Gi g‡a¨ wfbœ wfbœ gvÎvq Kv‡i›U Pvjbv Ki‡j wfbœ wfbœ cwigvY Al K¨v‡_v‡W Rgv nq| Kv‡i›U (A) mgq/w`b mwÂZ Al Gi fi (kg) 60 1 1.0 120 2 4.0 240 2 8.0 G †cªwÿ‡Z cÖkœ n‡jv MwjZ A¨vjywgbvi g‡a¨ 3 w`‡bi Rb¨ 180A ZworKv‡i›U Pvjbv Ki‡j K¨v‡_v‡W KZUzKz Al Rgv nq? wb‡¤œi †KvbwU mwVK? K 3kg L 9 kg M 6.0kg N 12.0 kg 400. ‡h cwigvY ZworPvR© cÖevwnZ Ki‡j CuSO4 `ªeY †_‡K K¨v‡_v‡W 0.3175 g Kcvi mwÂZ nq H cwigvY ZworPvR© cÖevn Øviv AgNO3 `ªeY †_‡K KZ MÖvg Ag K¨v‡_v‡W cvIqv hvq? K 0.10788 g L 1.0788 g M 2.1576 g N 0.5394 g 401. H2SO4 Gi Rjxq `ªe‡Y 1.0F ZworPvR© cÖevwnZ Ki‡j NTP †Z K¨v‡_v‡W Kx cwigvY H2 M¨vm wegy³ nq? K 22.4 L L 11.2 L M 2.24L N 1.12 L 402. Zwor cwievnx c`v_©‡K KqwU fv‡M fvM Kiv hvq? K 3wU L 2wU M 4wU N 5wU 403. wb‡Pi †KvbwU cwievnx c`v_©? K Zvgv L KvV M ivevi N KvP 404. GKwU †Kv‡li e.m.f wbY©‡qi mgxKiY †KvbwU? K Ecell Eanonde(ox) Ecathode(red) L Ecell Eanonde(ox) Ecathode(red) M Ecell Ecathode(red) Ecathoxe(ox) N Ecell Ecathode(red) Ecathoxe(ox) 405. g„`yB‡jK‡UªvjvBU †KvbwU? K HNO3 L NaOH M HCl N NH4OH 406. wRsKmvj‡dU `ªeY 1.0 C PvR© cÖevwnZ Ki‡j A¨v‡bv‡W `ªexf~Z wRsK Gi cwigvY KZ? K 32.7 g L 34.7 g M 0.000338 g N 0.0000338 g 407. wb‡Pi †Kvb ZwoØviwUi Dcv`vb me‡P‡q mn‡R B‡jKUªb Z¨vM Ki‡Z cv‡i? K Zn L Hg M Cl N Br 408. wb‡Pi †KvbwU Zwor we‡køl¨ c`v_©? K CCl4 L C12H22O11 M H2O(H+ ) N C2H5OH 409. wb‡Pi †KvbwU mevi Av‡M PvR©gy³ n‡e? K K +L Ag+ M Cu+ N Au+ 410. wb‡Pi †KvbwU jNy H2SO4 n‡Z nvB‡Wªv‡Rb wegy³ Ki‡Z cv‡i? K Pb L Hg M Cu N Ca 411. Zn Ges Cu Gi cÖgvY weRviY wefe h_vµ‡g –0.76V Ges +0.34V| Cu+Zn2+ Cu2+ + Zn wewµqvq Ecell Gi gvb KZ? K – 0.101 V L – 1.01 V M +0.101 V N +1.1 V 412. mgf‡i wb‡Pi †KvbwU‡Z PvR© a‡i ivLvi ÿgZv †ekx? K Li L Na M K N Rb 413. GwmW wgwkÖZ chv©ß cvwbi †fZi w`‡q 2F we`y¨r Pvjbv Ki‡j KZ MÖvg nvB‡Wªv‡Rb M¨vm K¨v‡_v‡W wegy³ n‡e? K 0.5 g L 1 g M 2g N 4g 414. Al Gi Zwor ivmvqwbK Zzj¨vsK KZ? K 9.310–5 gc–1 L 9.310–4 gc–1 M 9.310–2 gc–1 N 9.310–3 gc–1 415. weMwjZ NaCl, MgCl2, AlCl3 Ges SnCl2 Gi †fZi w`‡q 1F Zwor Pvjbv Ki‡j K¨v‡_v‡W wb‡Pi †Kvb avZzi AwaK †gvjmsL¨v Rgv n‡e? K Na L Mg M AlN Sn
| 416. CuSO4 Gi Rjxq `ªe‡Y 10 wgwbU a‡i 0.5A Zwor Pvjbv Ki‡j K¨v‡_v‡W Kq cigvYy Kcvi Rgv n‡e? K 9.351020 wU L 9.351021 wU M 9.351022 wU N 9.351023 wU 417. A, B, C Ges D Gi weRviY wefe h_vµ‡g –0.5V, 0.3V, –0.6V Ges –0.83V; wb‡Pi ‡KvbwU AwaK mwµq? K A L B M C N D 418. wjw_qvg e¨vUvwi Pv‡R©i mgq †Kvevë Gi RviYgvY +3 n‡Z KZ nq? K +1 L +2 M +4 N +6 419. ‡Kvb avZehyM‡ji mgš^‡q MwVZ †Kv‡l mev©wK Zwor cvIqv hv‡e? K Zn Ges Cu L Zn Ges Ag M Zn Ges Al N Ag Ges Al 420. GK †gvj weMwjZ Al2O3 Gi †fZi w`‡q KZ d¨viv‡W Zwor Pvjbv Ki‡j m¤ú~Y©iƒ‡c avZe c`v_© K¨v‡_v‡W mwÂZ n‡e? K 1F L 3F M 4F M 6F 421. wb‡Pi †KvbwUi Rjxq `ªe‡Y Zwor cwievwnZv me‡P‡q †ewk? K AgF (aq) L AgCl(aq) M AgBr(aq) N AgI 422. wb‡Pi †Kvb `ªe‡Yi Zwor cwievwnZv me‡P‡q Kg? K 1% CH3COOH `ªeY L 2% CH3COOH `ªeY M 5% CH3COOH `ªeY N 10% CH3COOH `ªeY 423. ‡Kvb avZz ¯^íZg mg‡q jNy HCl Gi mv‡_ wewµqv K‡i H2 M¨vm Drcbœ K‡i? K Na L K M Zn N Pb 424. LiCoO2 A + nLi+ + ne– A †hŠ‡M CO Gi RviY gvb KZ? K +1 L +2 M +3 N +4 425. B‡jKUªbxq cwievnx †KvbwU? K FeSO4 L NaCl M CuSO4 N Pt 426. K¨v‡_v‡Wi cÖ_g m~‡Îi MvwYwZK cÖKvk wb‡Pi †KvbwU? K W I L W Q M W Z N W ZI 427. GKwU CuSO4 `ªe‡Yi g‡a¨ GK N›Uv hver we`y¨r cÖevwnZ Ki‡j 0.50g MÖvg Cu ZworØv‡i Rgv n‡j Kx cwigvY we`y¨r cÖevwnZ n‡qwQj? K 0.422 A L 0.402A M 0.412V N 0.432A 428. ‡mvwWqvg †K¬vivB‡Wi (NaCl) Gi Rjxq `ªe‡Yi Zwor we‡køl‡Y Drcbœ nqK Na K¨v‡_v‡W Ges Cl2 A¨v‡bv‡W L H2 K¨v‡_v‡W Ges Cl2 A¨v‡bv‡W M H2 K¨v‡_v‡W Ges O2 A¨v‡bv‡W N Na K¨v‡_v‡W Ges O2 A¨v‡bv‡W 429. GK Kzj¤^ Avavb KZwU B‡jKUªb enb K‡i? K 6.021021 L 6.241018 M 6.211015 N 6.021010 430. wb‡Pi †KvbwU Dc‡ii bxwZi Rb¨ cÖ‡hvR¨? K 3 3 2 2 1 1 E W E W E W = aªæeK L 3 3 2 2 1 1 a W a W a W = aªæeK M w = ZI N w= ZQ 431. hLb †Kv‡bv mswkøó AvqZ‡bi PvR© msL¨v Øviv M¨vg AvYweK f‡i wefvwRZ nq ZLb Zv‡K e‡jK ivmvqwbK mvg¨ve¯’v L hvwš¿K mvg¨ve¯’v M Zwor mvg¨ve¯’v N Zwor hvwš¿K mvg¨ve¯’v 432. 1M Na2SO4 Gi Zwor we‡køl‡Y K¨v‡_v‡W wb‡Pi †KvbwU Drcbœ n‡e? K O2 L H2 M H2SO3 N 2 S2O8 433. wb‡Pi †KvbwU RviK I weRviK Dfq ag© cÖ`k©b Ki‡Z mÿg? K H + L Na+ M Sn2+ N MnO4 434. GKwU Zwor ivmvqwbK †Kvl Pvjbvq jeY †mZzi f~wgKv †KvbwU? K Av`ª©we‡kølY msNUb Kiv L A-¯^Ztù~Z© wewµqv NUv‡bv M ‡Kv‡li g‡a¨ Avqb PjvP‡ji my‡hvM m„wó Kiv N K¨v‡_vW †_‡K A¨v‡bv‡W B‡jKUªb ¯’vbvšÍi Kiv
| অধ্যায় ০৫: অর্থনিরতক েসায়ি 1. b¨v‡bv KYvi AvKvi n‡”QK 1–100 nm L 100nm M 1nm N 100-200 nm 2. ‡Kvb `~lKwU cÖv_wgK evqy `~l‡Ki Zzjbvq AwaK ÿwZKviK? K H2S L NH3 M CO N H2SO4 3. wngvqK I Pvgov wk‡í †jvgbvkK wn‡m‡e †KvbwU e¨eüZ nq? K B_vBj A¨vwgb L A¨v‡iv‡gwUK A¨vwgb M wg_vBj A¨vwgb N K I L DfqB 4. weqvbxevRv‡ii M¨vm D‡Ëvjb K‡i †Kvb †Kv¤úvbx? K SGFCL L BAPEX M TULLOW N SHAURON 5. KvM‡R is Kiv nq †Kvb av‡c? K KzwKs L wewUs M widvBwbs N mvBwRs 6. wm‡g›U wk‡í †KvbwU KvuPvgvj wnmv‡e e¨eüZ nq? K cÖvK…wZK M¨vm L Kqjv M Pzbvcv_i N †mvWv A¨vk 7. evsjv‡`‡ki Kqjv wfwËK cÖavb wkí †KvbwU? K BDwiqv L Møvm M we`y¨r N wm‡g›U 8. Pvgovi wcKwjs Kivi †ÿ‡Î wb‡Pi †Kvb `ªe‡Yi g‡a¨ Pvgov‡K Wzwe‡q ivLv nq? K 1M NaCl I 0.05M NaOH L 1M NaCl I 0.05M H2SO4 M 1M NaCl I 0.05M NH4Cl N 1M NaCl I 0.05M NH4Cl 9. wkí e‡R¨©i `~lK ‡_‡K cwi‡ek wech©q †iva Ki‡Z †KvbwU Kiv AwaK evÂbxq? K wkí BDwbU¸‡jv‡K Ri”ixfv‡e kn‡ii Avevm¯’j †_‡K `~‡i ¯’vbvšÍi Kiv L cÖwZwU wkí BDwb‡U wbivc` I cwi‡ek evÜe ivmvqwbK `ªe¨ e¨envi Kiv M cwi‡ek Awa`ßi KZ…©K h_vh_fv‡e QvocÎ †`qv n‡q‡Q wKbv Zv cixÿv K‡i †`qv N `~wlZ eR¨© cwi‡kva‡bi Rb¨ cÖ‡qvRbxq BwUwc Kvh©µg I mwµq Av‡Q wKbv Zv cixÿv Kiv 10. Kve©‡bi b¨v‡bv cvwU©K¨vj bq †KvbwU? K MÖvwdb L Kve©b b¨v‡bvwUDe M dzjvwib N nxiK 11. KvMR ˆZwii †Kvb av‡c wdjvi c`v_© cÖ_‡g ‡hvM Kiv nq? K wewUs L KzwKs M widvBwbs N Kvjvwis 12. ‡gjvgvBb ˆZwii Dcv`vb †KvbwU? K ‡Udjb L BDwiqv M wg_vb¨vj N A¨v‡gvwbqv 13. Pvgov wk‡í †KvbwU eR¨©? K Zij CH4 L MgO ¸uov M Na2SO4 N CaS 14. µx‡g UV iwk¥ †kvl‡Yi Rb¨ wb‡Pi †KvbwU e¨envi Kiv nq? K ZnO L TiO2 M Al2O3 N Pb3O4 15. b¨v‡bv cvwU©K¨vj Kx? K e„nr Avuk L ÿz`ª Zš‘ M GK ai‡bi m~² KwYKv N GK ai‡bi e„nr KwYKv 16. Pvqbv †K¬ Gi ms‡KZ †KvbwU? K K2O.Al2O3.6SiO2 L CaO.Al2O3.6SiO2 M Al2O3.2SiO2.2H2O N Na2O.Al2O3.6SiO2 17. wb‡Pi †KvbwU Pz¤^K ag© cÖ`k©b K‡i? K Au L Aun M Zn N He 18. ‡Kvb c`v_©wU ïay GKevi wimvB‡Kj †hvM¨? K cwjw_b L KvP M A¨vjywgwbqvg N KvMR 19. evsjv‡`‡k †Kvb Lv‡Z cÖvK…wZK M¨vm me‡P‡q †ewk e¨envi nq? K we`y¨r Drcv`b L mvi KviLvbvq
| M wmGbwR N M„n¯’vwj 20. eZ©gv‡b evsjv‡`‡ki †Kvb Kqjv‡ÿÎ †_‡K Kqjv Drcvw`Z n‡”Q? K eocyKzwiqv L dzjevox M `xwNcvov N RvgvjMÄ 21. ‡µvg U¨vwbs cÖwµqvq Pvgovi †Kvjv‡Rb I †µvwgqvg Avq‡bi g‡a¨ †Kvb eÜb MwVZ nq? K AvqwbK eÜb L mg‡hvRx eÜb M mwbœ‡ek eÜb N nvB‡Wªv‡Rb eÜb 22. we`y¨r Drcv`‡bi Rb¨ wb‡Pi †Kvb c`v_©wU me‡P‡q †ewk e¨eüZ nq? K C29H40O6N L cÖvK…wZK M¨vm M cvwb N wbDwK¬qvi 23. wmivwgK‡K Zvc mnbkxj evbv‡bvi Rb¨ wb‡Pi †KvbwU †hvM Kiv nq? K e·vBU L Pzbvcv_i M wmwjKv N †d¬vi¯úvi 24. w¯’i Pv‡c 27C G wbw`©ó f‡ii M¨v‡mi AvqZb 1L n‡j KZ ZvcgvÎvq M¨v‡mi AvqZb 2L n‡e? K 0C L 273K M 273C N 283C D chv©qwUi bvg njK wWmwës L wcKwjs M wW‡dwUs N wW-Aw·WvBwRs 25. Pvgovi †Kvjv‡Rb ‡cÖvwU‡bi mv‡_ †Kvb avZzwU hy³ n‡q Pvgovi wjs‡KR c~Y© K‡i _v‡K? K Pb L Sb M As N Cr 26. ‡Kvb Kqjv Lwbi Kqjvi K¨vjwiwdK gvb me‡P‡q †ewk? K eo cyKzwiqv L `xwNcvov M Lvwjmcyi N RvgvjMÄ 27. b¨v‡bv Ae¯’vq c`v‡_©i AcwUK¨vj, Pz¤^Kxq ev ˆe`y¨wZK ag© cwieZ©‡bi KviY †KvbwU? K KYvi f L KYvi AvqZb M KYvi †fŠZ Ae¯’v N KYvi Zij †ÿÎdj 28. KvP Drcv`‡b Mjbx `ªe¨ n‡jvK SiO2 L K2O M CaO N Kv‡jU 29. ‡cvU©j¨vÛ wm‡g‡›U CaO Gi kZKiv cwigvY n‡jvK 17-25 L 1-3 M 2-6 N 60-66 30. ‡ccv‡ii Kvwj gynb Gi Rb¨ †ccvi wk‡í cvê ˆZwii mgq e¨eüZ nqK NaOH L H2SO4 M NaSO4 N wjMwbb 31. cÖvK…wZK M¨v‡mi cÖavb Dcv`vb n‡jvK Bw_wjb L wg‡_b M weD‡Ub N †cÖv‡cb 32. wb‡¤œi †KvbwU evsjv‡`‡ki cÖvK…wZK M¨vm †ÿÎ? K dzjevwo L weweqvbv M RvgvjMÄ N eo cyKzwiqv 33. b¨v‡bv KYvi AvKvi n‡”QK 1nm L 100-200 nm M 1-100 nm N 10 nm 34. KqwU Drm †_‡K wPwb Drcv`b Kiv nq? K 2wU L 4wU M 3wU N 6wU 35. b¨v‡bv KYvi AvK…wZK 1-100 L 100-2500 M 2500-10000 N 10000 36. Ky‡jU †Kvb wk‡í eR¨© wimvBwK¬s c`v_© wn‡m‡e e¨envi Kiv nq?. K wm‡g›U L KvuP M cøvw÷K N KvMR 37. wb‡Pi †KvbwU †cÖvwWDmvi M¨vm bv‡g cwiwPZ? K (CO + H2) L (CO + N2) M (CO2 + N2) N (CO + 3H2) 38. BDwiqv mv‡i KZ kZvsk bvB‡Uªv‡Rb _v‡K? K 46% L 44% M 42-44% N 48-50% 39. wm‡g›U Rgvi mgq †h DËv‡ci m„wó nq Zv‡Z wb‡Pi †hŠMmg~‡ni mwVK µg †KvbwU?
| K C3A C3SC2S C4AF L C2S C4AF C3S C3A M C3S C3A C4AF C2S N C3S C2S C4AF C3A 40. evsjv‡`‡k iwk`cyi M¨vm †ÿ‡Î cÖvß M¨v‡m wg‡_‡bi kZKiv nvi KZ? K 93.40 L 96.85 M 98.00 N 99.05