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

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
•Re imvqb  Varsity Practice Sheet ................................................................................................................................ 3 e ̈vL ̈v: n ̈v‡jv‡R‡bv A ̈vj‡Kb †_‡K A ̈vj‡Kvnjxq ÿv‡ii mvnv‡h ̈ HX Acmvi‡Y A ̈vjwKb Drcbœ nq| A ̈vjKvBj n ̈vjvBW (RX) Gi E2 AcmviY wewμqvq (alc.) KOH ÿvi wn‡m‡e KvR K‡i| Gi OH– Avqb wbDwK¬IdvBj wn‡m‡e FYvZ¥K Avqb n ̈v‡jv‡Rb‡K(X) cÖwZ ̄ vcb K‡i| †hgb: R – CH2 – CH2 – X + KOH(alc)  R – CH = CH2 + KX + H2O 17. wMÖMbvW© weKviK n‡jvÑ [DU 20-21; RU 11-12; BSMRSTU 19-20] CH3ONa RBaCl RMgX RCaX DËi: RMgX e ̈vL ̈v: 22 – 25C ZvcgvÎvq ï®.. B_vi `ave‡K A ̈vjKvBj n ̈vjvBW A_ev A ̈vivBj n ̈vjvBW `aexf~Z K‡i Gi g‡a ̈ Mg avZzi ̧uov †hvM Ki‡j Zv‡cvrcv`x wewμqv Øviv ax‡i ax‡i A ̈vjKvBj g ̈vM‡bwmqvg n ̈vjvBW (R – MgX) A_ev A ̈vivBj g ̈vM‡bwmqvg n ̈vjvBW (R – MgX) bvgK wMÖMbvW© weKviK Drcbœ nq| 18. CH3 – CH(C2H5) – CH2 – CHBr – CHCl – CH3 †hŠMwUi IUPAC bvg n‡jvÑ [DU 19-20, 12-13] 2-†K¬v‡iv-3-†eav‡gv-5-B_vBj‡n‡·b 2-†K¬v‡iv-3-†eav‡gv-5-wg_vBj‡n‡Þb 3-†eav‡gv-2-†K¬v‡iv-5-B_vBj‡n‡·b 3-†eav‡gv-2-†K¬v‡iv-5-wg_vBj‡n‡Þb DËi: 3-†eav‡gv-2-†K¬v‡iv-5-wg_vBj‡n‡Þb e ̈vL ̈v: CH3 – CH – CH2 – CH – CH – CH3 CH2 5 4 3 2 1 6 CH3 Br Cl 7 (3-†eav‡gv-2-†K¬v‡iv-5-wg_vBj‡n‡Þb) 19. wb‡¤œi †Kvb †hŠMwU R ̈vwgwZK mgvYyZv cÖ`k©b K‡i? [DU 19-20] (CH3)3N CH3CH = CH2 (CH3)2NH CH3CH = CHCH3 DËi: CH3CH = CHCH3 e ̈vL ̈v: R ̈vwgwZK ev wmm-UavÝ mgvYyZv †Pbvi Dcvq:  Kve©b-Kve©b wØ-eÜb hy3 †h.M n‡e|  wØ-eÜb hy3 †h.‡M Kve©‡bi Dfq cv‡k wfbœ Kvh©Kixg~jK n‡e| H3C H H wmm mgvYy C = C CH3 H3C H CH3 UavÝ mgvYy C = C H 20. †cÖvwUb AYyi g‡a ̈ A ̈vgvB‡bv Gwm‡Wi AYymg~n †h eÜb Øviv hy3 _v‡KÑ [DU 19-20; CU 16-17; MBSTU 19-20 ] Glycosidic bond Peptide bond Hydrogen bond Metallic bond DËi: Peptide bond e ̈vL ̈v: -A ̈vgvB‡bv Gwm‡Wi `yB AYyi GKwU A ̈vwg‡bv g~j‡Ki H I AciwUi – COOH g~j‡Ki – OH wg‡j GK AYy H2O AcmvwiZ n‡j †h eÜb       – N | H – O || C – MwVZ nq Zv‡K †ccUvBW eÜb e‡j| 21. †hŠM X, C6H12O, A¤øxq Na2Cr2O7 Øviv RvwiZ n‡q Y †hŠM nq| Y †hŠMwU Aí cwigvY Nb H2SO4 Gi Dcw ̄’wZ‡Z B_vb‡ji mv‡_ wewμqv K‡i Z †hŠM •Zwi K‡i| Z Gi ms‡KZ Kx? [DU 18-19] CH3(CH2)2CH = CHCO2H CH3(CH2)4CH2COCH2CH3 CH3(CH2)4CO2CH2CH3 CH3CH2CO2(CH2)4CH3 DËi: CH3(CH2)4CO2CH2CH3 e ̈vL ̈v: CH3(CH2)4CHO + [O] Na2Cr2O7  [O] CH3(CH2)4COOH ÔX’ ÔY’ CH3(CH2)4COOH + C2H5OH H2SO4  CH3(CH2)4COOCH2CH3 ÔZ’ 22. CH3CH(OH)CH2CHO Ges CH3COCH2CH2CH2OH Gi g‡a ̈ cv_©K ̈ Kivi Rb ̈ †Kvb weKviK e ̈envi Kiv †h‡Z cv‡i? [DU 18-19; BSMRSTU 19-20; JUST 19-20] A¤øxq K2Cr2O7 `aeY jNy H2SO4 2,4-WvBbvB‡UavwdbvBjnvBWavwRb †dwjs Gi `aeY DËi: †dwjs Gi `aeY e ̈vL ̈v: A ̈vjwWnvBW I wK‡Uv‡bi cv_©K ̈ wb¤œiƒc: cixÿv A ̈vjwWnvBW wK‡Uvb U‡jb weKviK wmjfvi `c©b MVb K‡i wewμqv K‡i bv †dwjs `aeY jvj Aat‡ÿc Drcbœ K‡i wewμqv K‡i bv wmd weKviK †Mvjvcx eY© wdwi‡q Av‡b wewμqv K‡i bv DËß NaOH †iwRb MVb K‡i †iwRb MVb K‡i bv 23. †Kvb Gwm‡Wi ZxeaZv me‡P‡q †ewk? [DU 18-19] CH3CH2COOH ClCH2CH2COOH Cl2CHCOOH CH3COOH DËi: Cl2CHCOOH e ̈vL ̈v: •Re Gwm‡W A ̈vjKvBj g~jK evo‡j Gwm‡Wi ZxeaZv K‡g Ges •Re Gwm‡W Zwor FYvZ¥K g~jK (†K¬vivBW) evo‡j ZxeaZv ev‡o| Cl2CHCOOH G -C G Cl msL ̈v †ewk| CH3COOH < CH2ClCOOH < CHCl2COOH < CCl3COOH
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`)