Title 2. Che. Varsity Practice Sheet (2nd Paper) With Solve.pdf ✅

•Re imvqb  Varsity Practice Sheet .............................................................................................................................. 55 MCQ weMZ mv‡j DU-G Avmv cÖkœvejx 1. †Kvb †hŠ‡Mi Kve©‡b GKvwaK ai‡bi msKiY Av‡Q? [DU 23-24] 1,3-butadiene (1,3-weDUvWvBb) Cyclohexane (mvB‡K¬v‡n‡·b) Vinylbenzene (wfbvBj‡ebwRb) 1,2-butadiene (1,2-weDUvWvBb) DËi: 1,2-butadiene (1,2-weDUvWvBb) e ̈vL ̈v: H2C = C = CH – CH3 sp2 sp3 sp sp 2 1,2-butadiene GLv‡b, †h.MwUi Kve©‡b sp, sp2 I sp3 wZb ai‡bi msKiY we` ̈gvb| 2. †KvbwU †dnwjs `ae‡Yi mv‡_ wewμqv K‡i? [DU 23-24] HCOOH CH3COOH CH3CH(OH)CH3 CH3COCH3 DËi: HCOOH e ̈vL ̈v: H – O || C – OH H – O || C – OH A ̈vjwWnvBW g~jK Kve©w·j g~jK HCOOH- G GKB mv‡_ A ̈vjwWnvBW I Kve©w·j g~jK _vKvq A ̈vjwWnvB‡Wi kbv3KiY wewμqv (†dwjs `aeYmn wewμqv) †`q| HCOOH(l) + 2Cu(OH)2 + 2NaOH(aq)  Cu2O(s) + Na2CO3(aq) + 4H2O(l) jvj Aat‡ÿc 3. NH3, RNH2, R2NH †hŠM ̧wji ÿvi-ag© cÖ`k©‡bi μg n‡”QÑ [DU 23-24] NH3 > RNH2 > R2NH R2NH > RNH2 > NH3 NH3 > R2NH > RNH2 RNH2 > NH3 > R2NH DËi: R2NH > RNH2 > NH3 e ̈vL ̈v: A ̈vwg‡bi ÿviag©xZvi μg: R2NH > RNH2 > R3N > NH3 > NH2 > NH2 NO2 4. R – CO – R  R – CH2 – R cwieZ©‡bi Rb ̈ †Kvb weKviKwU cÖ‡qvRb? [DU 23-24, 08-09, 06-07; RU 08-09; GST 21-22] Sn/HCl Zn.Hg/HCl LiAlH4 KMnO4 DËi: Zn.Hg/HCl e ̈vL ̈v: wK¬‡gb‡mb weRviY: R – C || O – R + 4[H] Zn – Hg  conc.HCl R – CH2 – R 5. CH2 = CH – CH = CH2 Gi Kve©b cigvYymg~‡ni msKivqb Kx ai‡bi? [DU 22-23] sp2 , sp sp, sp3 sp2 sp, sp2 , sp3 DËi: sp2 e ̈vL ̈v: H H C C C C H            H H H wØ-eÜb hy3 Kve©b cigvYymg~n sp2 msKiY †`Lvq| 6. wb‡Pi †Kvb †hŠMwU wmm-UavÝ mgvYyZv cÖ`k©b K‡i? [DU 22-23] C6H5CHBrCl ClCH = CHCl CH2 = CH2 CH3CH(OH)COOH DËi: ClCH = CHCl e ̈vL ̈v: wmm-UavÝ mgvYyi kZ©:  †h.‡M wØ-eÜb _vK‡Z n‡e|  wØ-eÜb hy3 Kve©‡b wfbœ wfbœ Kvh©Kix g~jK/cigvYy _vK‡e| C6H5CHBrCl I CH3CH(OH)COOH Gi g‡a ̈ wØ-eÜbB †bB Ges CH2 = CH2 Gi g‡a ̈ wØ-eÜb _vKv m‡Ë¡I GwU R ̈vwgwZK mgvYyZvi kZ© gv‡b bv| ZvB Giv R ̈vwgwZK mgvYy w`‡e bv| Cl Cl H H wmm mgvYy C = C H Cl Cl H UavÝ mgvYy C = C 7. wb‡Pi †Kvb Kv‡e©vK ̈vUvqbwU me‡P‡q †ewk w ̄’wZkxj? [DU 22-23, 15-16, 12-13; JU 18-19, 17-18; RU 17-18; CU 16-17; SUST 08-09; MBSTU 19-20; BSMRSTU 17-18]  CH3 (CH3)2  CH H2C  CH3 (CH3)3C  DËi: (CH3)3C  e ̈vL ̈v: Kv‡ev©K ̈vUvq‡bi, ̄’vwq‡Z¡i μg: 3 > 2 > 1; mwμqZvi μg: 1 > 2 > 3
2 ....................................................................................................................................  Chemistry 2nd Paper Chapter-2 8. hw` B_vBj †ebwRb‡K KMnO4 Gi mv‡_ Zvc †`Iqv nq, Z‡e wb‡Pi †KvbwU Drcbœ nq? [DU 22-23; JU 14-15] †ebwRb †eb‡RvwqK GwmW UjyBb B‡_b DËi: †eb‡RvwqK GwmW e ̈vL ̈v: + [O] KMnO4 + KOH CH2 – CH3 COOH B_vBj †ebwRb †eb‡RvwqK GwmW 9. C5H12 †hŠ‡Mi MvVwbK mgvYy KqwU? [DU 21-22; RU-C 20-21; JnU 14-15] 2 3 4 5 DËi: 3 e ̈vL ̈v: A ̈vj‡K‡bi †ÿ‡Î mgvYy wbY©q: 2 n–4 + 1 [Kve©‡bi msL ̈v 7 ch©šÍ Kvh©Ki]  mgvYy msL ̈v = 2 5 – 4 + 1 = 3 A_©vr wZbwU mgvYy m¤¢e| mgvYy ̧‡jv n‡jv: (i) CH3 – CH2 – CH – CH3 CH3 4 3 2 1 2-methylbutane (ii) CH3 – C – CH3 CH3 CH3 3 2 1 2,2-di methylpropane (iii) CH3 – CH2 – CH2 – CH2 – CH3 n-pentane 10. CH3MgX Gi mv‡_ wb‡Pi †Kvb †hŠMwUi wewμqvq AvB‡mv‡cÖvcvbj Drcbœ nq? [DU 21-22; BRUR 10-11] HCHO CH3CHO CH3COCH3 CH3OH DËi: CH3CHO e ̈vL ̈v: CH3MgX + CH3CHO H2O  CH3 – OH | CH – CH3 Isopropanol 11. C2H5OH RvwiZ n‡q •Zwi nq Z; hv C2H5OH Gi mv‡_ G÷vi cÖ ̄‘Z K‡i| Z Kx? [DU 21-22, 19-20] HCOOH CH3COOH CH3CHO CH3CH2CH2COOH DËi: CH3COOH e ̈vL ̈v: C2H5 – OH K2Cr2O7 + H2SO4 (Mvp)  [O] CH3COOH (Z) C2H5OH + CH3COOH ⇌ CH3 – COO – CH2 – CH3 + H2O G÷vi (B_vBj B_v‡bv‡qU) 12. †dbj I A ̈vj‡Kvnj Df‡qi Rb ̈ wb‡¤œi †KvbwU mZ ̈? [DU 21-22, 13-14; IU 12-13] PCl5 Gi mv‡_ wewμqv K‡i ivBgvi UvBg ̈vb wewμqv cÖ`k©b K‡i Br2 cvwbi mv‡_ wewμqv K‡i jyKvm weKvi‡Ki mv‡_ wewμqv K‡i DËi: PCl5 Gi mv‡_ wewμqv K‡i e ̈vL ̈v: OH + PCl5  + POCl3 + HCl Chlorobenzene Cl C2H5OH + PCl5  C2H5Cl + POCl3 + HCl 13. Abv`a© AlCl3 Gi Dcw ̄’wZ‡Z †ebwR‡bi mv‡_ A ̈vwmUvBj †K¬vivB‡Wi wewμqvq Drcbœ nqÑ [DU 21-22] Chlorobenzene Acetophenone Toluene Benzoic acid DËi: Acetophenone e ̈vL ̈v: †ebwR‡bi wd«‡Wj μvdU A ̈vmvB‡jkb: + CH3COCl Abv`©a AlCl3 CO – CH3 + HCl †ebwRb A ̈vwmUvBj †K¬vivBW A ̈vwm‡Uv‡d‡bvb 14. †Kvb †hŠMwU wmjfvi `c©Y cixÿv †`q? [DU 20-21, 17-18; JU-A 22-23] †cÖvcv‡bvb †cÖvcvb ̈vj †cÖvcvbj †cÖvcvBb DËi: †cÖvcvb ̈vj e ̈vL ̈v: A ̈vjwWnvBWmg~n wmjfvi `c©Y I †dwjs `aeY cixÿv †`q wKš‧ wK‡Uvb †`q bv| CH3 – CH2 – CHO + [Ag (NH3)2]OH  Ag + CH3 – CH2 – COONH4 + NH3 + H2O (`c©Y) 15. †ebwRb ejq mwμqKvix g~jK †KvbwU? [DU 20-21; CU 20-21] – CHO – NO2 – NH2 – SO3H DËi: – NH2 e ̈vL ̈v: †ebwRb ejq mwμqKvix (A‡_©v-c ̈viv wb‡`©kK) g~jK n‡jv – NH2| KviY Gi abvZ¥K †g‡mvgvwiK I Av‡ekxq cÖfve we` ̈gvb| – CHO, – NO2, – SO3H †gUv wb‡`©kK g~jK Ges G‡`i FYvZ¥K †g‡mvgvwiK I Av‡ekxq cÖfve we` ̈gvb| 16. A ̈vjKvBj n ̈vjvB‡Wi E2 AcmviY wewμqvq, A ̈vj‡KvnwjK KOH/NaOH Gi f~wgKv n‡jvÑ [DU 20-21] ÿvi `aveK AbyNUK wbDwK¬IdvBj DËi: ÿvi

4 ....................................................................................................................................  Chemistry 2nd Paper Chapter-2 24. †Kvb †hŠMwU †K›`avKlx© ms‡hvRb wewμqv w`‡e? [DU 18-19] C2H4 C2H5Br CH3CHO C2H6 DËi: CH3CHO e ̈vL ̈v: > C = O hy3 A ̈vjwWnvBW/wK‡Uvb †K›`avKlx© ms‡hvRb wewμqv †`q| 25. wb‡¤œv3 †KvbwU Øviv †dbj †_‡K wcKwiK GwmW cÖ ̄‘Z Kiv nq? [DU 18-19] HNO3.H2SO4 H2SO4, 30-100C Dilute HNO3 Concentrated HNO3 DËi: Concentrated HNO3 e ̈vL ̈v: †db‡ji bvB‡Uak‡b wcKwiK GwmW cvIqv hvq| NO2 OH NO2 NO2 OH + Conc. HNO3 26. CH3 – CH = CH2 †hŠ‡M Kve©b ̧‡jvi msKivqb wKiƒc? [DU 17-18] sp, sp2 sp, sp3 sp2 , sp3 sp, sp2 , sp3 DËi: sp2 , sp3 e ̈vL ̈v: CH3 – CH = CH2 sp2 sp2 sp3 wØ-eÜb hy3 Kve©‡b sp2 Ges GKK eÜb hy3 Kve©‡b sp3 msKiY †`Lv hvq| 27. IUPAC c×wZ‡Z wb‡Pi †hŠMwUi bvg wK? CH3 – CH(CH3)CH2 – C(CH3)OH – CH2 – CH3 [DU 17-18] 2,4-dimethylhexanol-4 3,5-dimethylhexanol-3 1-ethyl-1,3-dimethylhexanol-1 1,3-dimethyl-1-ethylbutanol-1 DËi: 3,5-dimethylhexanol-3 e ̈vL ̈v: CH3 – CH – CH2 – C – CH2 – CH3 CH3 2 1 3 6 5 4 OH CH3 (3,5-dimethylhexanol-3) 28. wb‡¤œi †Kvb †hŠMwU Optical isomerism †`Lvq? [DU 17-18; JU-D 18-19; JU-A 16-17; RU 15-16] CH2(NH2)COOH CH3CH(NH2)COOH (CH3)2CHCOOH CH3CH2COOH DËi: CH3CH(NH2)COOH e ̈vL ̈v: CH3 – H | *C – | NH2 COOH †h.‡M KvBivj Kve©b we` ̈gvb e‡j †h.MwU optical isomerism ev Av‡jvK mgvYyZv cÖ`k©b K‡i| 29. †KvbwU B‡jK‡UavdvBj? [DU 17-18] PH3 H2O BF3 NH3 DËi: BF3 e ̈vL ̈v: †h mKj weKviK B‡jKUab MÖn‡Y mÿg Zviv B‡jK‡UavdvBj wn‡m‡e KvR K‡i| jyBm GwmW mg~n B‡jK‡UavdvBj| †hgb-CH+ 3 , AlCl3, BF3 30. C6H5 – CHO + CH3NH2  q + H2O; wewμqvq q Gi AvYweK ms‡KZ †KvbwU? [DU 17-18] C6H5 – NH2 | C =N – CH3 C6H5 – H | C = N – CH3 C6H5 – CH2 – COOH C6H5 – COOH DËi: C6H5 – H | C = N – CH3 e ̈vL ̈v:C6H5 – CHO + CH3NH2  C6H5 – H | C = N – CH3(aq) + H2O 31. wb‡Pi wewμqvi Drcv`/Drcv`mg~n Kx? HCHO Mvp NaOH `aeY  ? [DU 17-18; JU 09-10] CH3OH + CH4 CH4 CH3OH + HCOOH HCOOH DËi: CH3OH + HCOOH e ̈vL ̈v: †h‡nZz, †h.MwU‡Z -H †bB ZvB wewμqvwU K ̈vwbRv‡iv wewμqv n‡e| 2HCHO Mvp NaOH `aeY  CH3OH + HCOOH 32. wd« †iwW‡K‡ji †ÿ‡Î †KvbwU mZ ̈ bq? [DU 16-17] Produced by the homolytic fission of -bond Produced by the heterolytic fission of -bond It is very unstable Number of protons and electrons are equal in it DËi: Produced by the heterolytic fission of -bond e ̈vL ̈v: wd«-†iwW‡Kj: weKviK AYyi mg‡hvRx eÜb Zvc ev Av‡jvi cÖfv‡e mgfv1⁄2b (homolysis) Øviv wd«-†iwW‡K‡j cwiYZ nq| 33. HCHO I CH3CHO Gi g‡a ̈ cv_©K ̈ Kivi Rb ̈ cÖ‡qvRbÑ [DU 16-17; CU 20-21] Iodoform test Carbylamine test Ninhydrin test Tollens reagent DËi: Iodoform test e ̈vL ̈v: n ̈v‡jvdig ev Av‡qv‡Wvdig cixÿv Øviv HCHO I CH3CHO Gi g‡a ̈ cv_©K ̈ Kiv nq| Kve©wbj †h.‡Mi CH3CO – g~j‡Ki mv‡_ H A_ev A ̈vjKvBj g~jK ev A ̈vivBj g~jK (– C6H5) hy3 _vK‡j Zviv n ̈v‡jvdig cixÿv †`q| ZvB CH3CHO Av‡qv‡Wvdig cixÿv w`‡e| CH3CHO + 3I2 + 4NaOH  CHI3 + HCOONa + 3NaI + 3H2O (njy`)