Title 2. Chemistry Cycle Academic Practice Sheet With Solve.pdf ✅

̧YMZ imvqb  Chemistry Cycle Academic Practice Sheet.................................................................. 1 ̧YMZ imvqb Qualitative Chemistry Topicwise Board Analysis eûwbe©vPwb cÖkœ UwcK 2016 2017 2018 2019 2021 2022 2023 †gvU cigvYyi g~j KwYKv, AvB‡mv‡Uvc 1 1 Ñ 2 1 4 4 13 iv`vi‡dvW© I †evi cigvYy g‡Wj, cÖ‡qvM 4 3 Ñ 2 5 12 5 31 †Kvqv›Uvg msL ̈v, AiweU I AiweUvj 6 6 Ñ 6 6 13 12 49 B‡jKUab web ̈vm I Gi wbqgmg~n 3 3 Ñ 3 1 1 4 15 eY©vwjwgwZ, H eY©vwj 12 4 Ñ 4 5 6 16 47 `ave ̈Zv I `ave ̈Zv ̧Ydj 2 8 1 10 3 9 8 41 wkLv cixÿv, Avqb kbv3KiY 5 10 2 7 5 3 4 36 m„Rbkxj cÖkœ UwcK 2016 2017 2018 2019 2021 2022 2023 †gvU iv`vi‡dvW© I †evi cigvYy g‡Wj Ñ 4 Ñ 1 Ñ 1 2 8 †Kvqv›Uvg msL ̈v, AiweU I AiweUvj, B‡jKUab web ̈vm I Gi wbqgmg~n 3 5 2 2 8 5 6 31 Zwor †P.¤^Kxq eY©vwj, H eY©vwj 1 2 2 2 6 7 8 28 `ave ̈Zv Ñ 1 Ñ Ñ 3 1 3 8 `ave ̈Zv ̧Ydj, mgAvqb cÖfve 3 5 2 7 8 8 7 40 wkLv cixÿv, Avqb kbv3KiY 3 3 2 3 3 3 5 22 * we.`a.: 2020 mv‡j GBPGmwm cixÿv AbywôZ nqwb| ACS Chemistry Department Gi g‡bvbxZ eûwbe©vPwb cÖkœmg~n cigvYyi g~j KwYKv, AvB‡mv‡Uvc 1. †Kvb KwYKvi ̄’vwqZ¡ me‡P‡q Kg? [Xv. †ev 23] B‡jKUab †cÖvUb wbDUab †gmb DËi: †gmb e ̈vL ̈v: cigvYyi A ̄ vqx g~j KwYKv ̧‡jvi ̄ vwqZ¡ ̄ vqx g~j KwYKv ̧‡jvi ̄ vwq‡Z¡i †P‡q Kg| †gmb A ̄ vqx g~j KwYKv nIqvq Gi ̄ vwqZ¡ Kg| 2. K ̈vÝvi wPwKrmvq e ̈eüZ nq †KvbwU? [Xv. †ev 23] He Ne Ar Rn DËi: Rn 3. †cÖvU‡bi cÖK...Z fi KZ? [wm. †ev 23] 1.60 × 10–24 g 1.66 × 10–24 g 1.673 × 10–24 g 1.675 × 10–24 g DËi: 1.673 × 10–24 g 4. †KvbwU AvB‡mv‡Uvb Gi D`vniY? [g. †ev. 23] 40 18Ar, 40 19K, 40 20Ca 36 16S, 37 17Cl, 39 19K 39 20Ca, 40 20Ca, 41 20Ca 40 19K, 40 20Ca, 39 21Sc DËi: 36 16S, 37 17Cl, 39 19K e ̈vL ̈v: 36 16Si G wbDUab msL ̈v = fimsL ̈v – †cÖvUb msL ̈v = 36 – 16 = 20 37 17P G wbDUab msL ̈v = fimsL ̈v – †cÖvUb msL ̈v = 37 – 17 = 20 39 19P G wbDUab msL ̈v = fimsL ̈v – †cÖvUb msL ̈v = 39 – 19 = 20 †h‡nZz G‡`i cÖ‡Z ̈‡Ki wbDUab msL ̈v mgvb myZivs Giv ci ̄ú‡ii AvB‡mv‡Uvb| 5. AvB‡mv‡Uv‡bi D`vniY †KvbwU? [iv. †ev. 22; h. †ev. 22] 14 6 C , 16 8 O 14 6 C , 14 7 N 3 1H , 2 1H 13 6 C , 17 8 O DËi: 14 6 C , 16 8 O e ̈vL ̈v: 14 6 C G wbDUab msL ̈v = fimsL ̈v – †cÖvUb msL ̈v = 14 – 6 = 8 16 8 O G wbDUab msL ̈v = 16 – 8 = 8 †h‡nZz 14 6 C I 16 8 O G wbDUab msL ̈v ci ̄úi mgvb myZivs Giv ci ̄ú‡ii AvB‡mv‡Uvb|
2 ........................................................................................................  Chemistry 1st Paper Chapter-2 6. †Kvb †mUwUi B‡jKUab msL ̈v mgvb? [w`. †ev. 22] Na+ , Ca2+, Sc3+, F– K + , Cl – , Mg2+, Sc3+ Na+ , Mg2+, Al 3+ , Cl – K + , Ca2+, Sc3+, Cl – DËi: K + , Ca2+, Sc3+, Cl – e ̈vL ̈v: N bs Ack‡bi †ÿ‡Î B‡jKUab msL ̈v: K + = 19 – 1 = 18 Ca2+ = 20 – 2 = 18 Sc3+ = 21 – 3 = 18 Cl – = 17 + 1 = 18 7. 30 14Si , 31 15P Ges 32 16S ci ̄ú‡iiÑ [w`. †ev. 22] AvB‡mv‡Uvb AvB‡mv‡Uvc AvB‡mvgvi AvB‡mvevi DËi: AvB‡mv‡Uvb e ̈vL ̈v: 30 14Si G wbDUab msL ̈v = 30 – 14 = 16 31 15P G wbDUab msL ̈v = 31 – 15 = 16 32 16S G wbDUab msL ̈v = 32 – 16 = 16 ZvB Giv ci ̄ú‡ii AvB‡mv‡Uvb 8. †h me cigvYyi fi msL ̈v GKB wKš‘ cvigvYweK msL ̈v wfbœ, G‡`i‡K Kx ejv nq? [Xv. †ev. 21] AvB‡mv‡Uvb AvB‡mvgvi AvB‡mvevi AvB‡mv‡Uvc DËi: AvB‡mvevi iv`vi‡dvW© I †evi cigvYy g‡Wj, cÖ‡qvM 9. cigvYyi Z...Zxq Kÿc‡_i GKwU B‡jKUa‡bi Rb ̈ †K.wYK fi‡e‡Mi gvb wbY©‡qi mgxKiY †KvbwU? [iv. †ev. 23; wm. †ev. 23] mvr = h 2 mvr = h  mvr = 3h 2 mvr = 3h  DËi: mvr = 3h 2 e ̈vL ̈v: Avgiv Rvwb, †K.wYK fi‡eM, L = mvr = nh 2  mvr = 3h 2 [n = 3] 10.  KYv we‡ÿcY cixÿvq iv`vi‡dvW© wb‡¤œi †KvbwU e ̈envi K‡ibwb? [h. †ev. 23] 4 2He2+ ̄^‡Y©i cvZ ZnS Gi AveiYhy3 c`v© 1 0 n DËi: 1 0 n e ̈vL ̈v: iv`vi‡dv‡W©i cixÿvq e ̈eüZ DcKiY: 1. †ZRw ̄...q †g.j †_‡K wbM©Z -KYv, ev wnwjqvg cigvYyi wbDwK¬qvm ( 4 2He2+)| 2. cvZjv †mvbvi cvZ (0.0004 cm cyiæ)| 3. wRsK mvjdvBW (ZnS) AveiYhy3 c`v©| 11. †evi g‡Wj wb‡Pi †Kvb †g.j ev Avq‡bi eY©vwj e ̈vL ̈v Ki‡Z cv‡i? [P. †ev. 23] He H – H + Be3+ DËi: Be3+ e ̈vL ̈v: †evi cigvYy g‡Wj GK B‡jKUab wewkó cigvYy ev Avqb (†hgb: H, He+ , Li2+, Be3+) Gi eY©vwj e ̈vL ̈v Ki‡Z cvi‡jI GKvwaK B‡jKUab wewkó cigvYyi eY©vwj e ̈vL ̈v Ki‡Z cv‡i bv| 12. †evi cigvYy g‡Wj wb‡Pi †KvbwUi †ÿ‡Î cÖ‡hvR ̈? [e. †ev. 23; Xv. †ev. 22] H + He2+ Li3+ He+ DËi: He+ 13. iv`vi‡dv‡W©i Avjdv KYv we”QziY cixÿvi ̄^Y©cv‡Zi cyiæZ¡ KZ wQj? [iv. †ev. 22] 0.000004 m 0.0004 cm 0.0004 mm 0.004 cm DËi: 0.0004 cm 14. cø ̈v1⁄4 aaæe‡Ki gvb KZ? [Kz. †ev. 22] 6.23 × 1023 J s 6.23 × 10–23 J s 6.624 × 1034 J s 6.624 × 10–34 J s DËi: 6.624 × 10–34 J s 15. H cigvYyi 4_© Kÿc‡_i e ̈vmva© 7.5 × 10–10 m n‡j, H K‡ÿ B‡jKUabwUi MwZ‡eM KZ? [B‡jKUa‡bi fi = 9.1 × 10–31 kg] [Kz. †ev. 22] 4.5982 × 105 ms–1 5.9482 × 105 ms–1 6.1805 × 105 ms–1 7.4805 × 105 ms–1 DËi: 6.1805 × 105 ms–1 e ̈vL ̈v: Avgiv Rvwb, mvr = nh 2  v = nh 2mr = 4 × 6.626 × 10–34 2 × 9.1 × 10–31 × 7.5 × 10–10  v = 6.1805 ×105 ms–1 16. iv`vi‡dv‡W©i wbDwK¬qvm Avwe®..vi cixÿvq 99% Avjdv () KYv ̄^Y©cvZ †f` K‡i †mvRv P‡j hvq †Kb? [P. †ev. 22] cigvYyi †K›`a abvZ¥K PvR©hy3 e‡j Avjdv KYvi MwZkw3 †ewk e‡j Avjdv KYvi cÖwZdwjZ nIqvi ÿgZv Kg cigvYyi AwaKvsk ̄ vbB dvuKv DËi: cigvYyi AwaKvsk ̄ vbB dvuKv
̧YMZ imvqb  Chemistry Cycle Academic Practice Sheet.................................................................. 3 17. ̄^vfvweK Ae ̄’vq nvB‡Wav‡Rb cigvYyi AveZ©bkxj B‡jKUa‡bi †K.wYK fi‡eM KZ? [e. †ev. 22] 1.05 × 10–34 J s 2.11 × 10–34 J s 3.16 × 10–34 J s 4.22 × 10–34 J s DËi: 1.05 × 10–34 J s e ̈vL ̈v: Avgiv Rvwb, mvr = nh 2 = 1 × 6.626 × 10–34 2 = 1.05 × 10–34 J s 18. iv`vi‡dvW© Zvi cixÿvq †Kvb c`v‡_©i cÖ‡jchy3 c`©v e ̈envi K‡ib? [e. †ev. 22] wRsK mjdvBU wRsK mvj‡dU wRsK mvjdvBW wRsK dm‡dU DËi: wRsK mvjdvBW 19. †Kvb weÁvbxi g‡Z AveZ©bkxj B‡j±ab μgvMZ kw3 wewKiY K‡i? [e. †ev. 22] nvB‡Rb evM© AvBb÷vBb g ̈v· cøvsK g ̈v·I‡qj DËi: g ̈v·I‡qj 20. †Kvb cigvYy g‡Wj Kÿc_ m¤ú‡K© aviYv †`q? [w`. †ev. 22] iv`vi‡dvW© _gmb Wvëb †evi DËi: †evi 21. †KvbwUi Rb ̈ †evi g‡Wj cÖ‡hvR ̈? [g. †ev. 22] H + H He Li+ DËi: H e ̈vL ̈v: †evi g‡Wj GKK B‡jKUab wewkó Avqb ev cigvYyi †ÿ‡Î cÖ‡hvR ̈| 22. †evi‡bi †kl B‡jKUa‡bi †K.wYK fi‡eM KZ? [g. †ev. 22; Xv. †ev. 21] h 2 2h  n 2 h  DËi: h  e ̈vL ̈v: †K.wYK fi‡eM, mvr = nh 2 = 2h 2 = h  [n = 2] 23. †evi cigvYy g‡Wj e ̈vL ̈v Ki‡Z cv‡iÑ [e. †ev. 22] (i) cigvYyi Zwor wbi‡cÿZv (ii) cvigvYweK eY©vwj (iii) Kÿc‡_i AvKvi wb‡Pi †KvbwU mwVK? i I ii ii I iii i I iii i, ii I iii DËi: ii I iii 24. †Kvb KYvi mvnv‡h ̈ iv`vi‡dvW© we”QziY cixÿv K‡ib? [Xv. †ev. 21]    X-ray DËi:  25. ÒcigvYyi wbDwK¬qvm abvZ¥K Avavbhy3ÓÑ †Kvb weÁvbx cÖgvY K‡ib? [iv. †ev. 21] iv`vi‡dvW© †evi wW-eaMwj †R. †R. _gmb DËi: iv`vi‡dvW© 26. -KYvi •ewkó ̈ †KvbwU? [Kz. †ev. 21] G‡Z `ywU †cÖvUb I `ywU B‡jKUab Av‡Q GUv Lye axiMwZm¤úbœ KYv Bnv abvZ¥K PvwR©Z KYv Gi fimsL ̈v 2 DËi: Bnv abvZ¥K PvwR©Z KYv 27. †m.i g‡Wj †KvbwU? [P. †ev. 21] iv`vi‡dvW© cigvYy g‡Wj †evi cigvYy g‡Wj _gmb cigvYy g‡Wj Wvëb cigvYy g‡Wj DËi: iv`vi‡dvW© cigvYy g‡Wj 28. †KvbwU -KYv? [Kz. †ev. 19] GKwU wbDUab I GKwU †cÖvUb `ywU wbDUab I `ywU †cÖvUb GKwU wbDUab I `ywU †cÖvUb `ywU wbDUab I GKwU †cÖvUb DËi: `ywU wbDUab I `ywU †cÖvUb e ̈vL ̈v:  KYv n‡jv wØabvZ¥K He wbDwK¬qvm| 4 2He2+ †Kvqv›Uvg msL ̈v, AiweU I AiweUvj 29. Cr cigvYyi me©ewnt ̄’ ͇̄ii B‡jKUa‡bi Rb ̈ †Kvqv›Uvg msL ̈vi †mU †KvbwU? [iv. †ev. 23] n = 4, l = 0, m = 0, s = – 1 2 n = 3, l = 0, m = 0, s = – 1 2 n = 3, l = 2, m = – 2, s = – 1 2 n = 4, l = 2, m = 2, s = – 1 2 DËi: n = 4, l = 0, m = 0, s = – 1 2 e ̈vL ̈v: 24Cr  1s2 2s2 2p6 3s2 3p6 3d5 4s1 GLv‡b, Cr cigvYyi me©ewnt ̄ ͇̄ii B‡jKUabwU PZz_© kw3 ͇̄ii s Dckw3 ͇̄i Aew ̄ Z| 4s Gi †ÿ‡Î: n = 4, l = 0, m = 0, s = – 1 2