Tiêu đề Chemical Change MCQ & CQ Practice Sheet (HSC 26).pdf ✅

ivmvqwbK cwieZ©b  MCQ & CQ Practice Sheet (HSC 26) 1 Topicwise Board Analysis eûwbe©vPwb cÖkœ UwcK 2016 2017 2018 2019 2021 2022 2023 †gvU wMÖb †Kwgw÷a I ivmvqwbK wewμqv 4 1 Ñ 2 5 3 5 20 ivmvqwbK mvg ̈ve ̄’v I jv-kv‡Zwjqv‡ii bxwZ 5 4 Ñ 2 6 5 10 32 fiwμqvi m~Î I mvg ̈aaæeK (Kp Ges Kc) 11 8 2 9 15 15 12 72 pH I pOH 8 7 1 11 15 12 12 66 evdvi `aeY I evdvi `ae‡Yi wμqv‡KŠkj 3 3 Ñ 5 5 5 6 27 GwmW ÿv‡ii kw3gvÎv I we‡qvRb 7 4 1 4 13 9 5 43 m„Rbkxj cÖkœ UwcK 2016 2017 2018 2019 2021 2022 2023 †gvU ivmvqwbK mvg ̈ve ̄’v I jv-kv‡Zwjqv‡ii bxwZ 1 8 2 5 9 4 7 36 fiwμqvi m~Î I mvg ̈aaæeK (Kp Ges Kc) 2 5 4 6 9 8 9 43 pH I pOH m¤úwK©Z mgm ̈vewj 3 9 8 1 8 7 7 43 evdvi `aeY I evdvi `ae‡Yi wμqv‡KŠkj 4 2 8 6 8 5 9 42 *we.`a.: 2020 mv‡j GBPGmwm cixÿv AbywôZ nqwb| ACS Chemistry Department Gi g‡bvbxZ eûwbe©vPwb cÖkœmg~n wMÖb †Kwgw÷a I ivmvqwbK wewμqv 1. DfgyLx wewμqvi •ewkó ̈ n‡jvÑ [Xv. †ev. 23] wewμqvwU †kl nq Dfqw`‡Ki wewμqvi nvi mgvb nq bv mvg ̈ve ̄’vq Avmvi cÖeYZv cÖfve‡Ki f~wgKv Av‡Q 2. wMÖb †Kwgw÷a‡Z AwaK Zvrch©c~Y© bxwZ †KvbwU? [Xv. †ev. 23] cÖfve‡Ki e ̈envi wbivc` `aveK e ̈envi m‡e©vËg GUg B‡Kvbwg `yN©Ubv cÖwZ‡iva 3. CH3COOH (aq) + NH4OH (aq)  Drcv` (X) + H2O(l); wewμqvwUi Drcv‡`i (X) cÖK...wZ Kx? [Kz. †ev. 23] A¤øagx© ÿviagx© Dfagx© wbi‡cÿ 4. wMÖb †K‡gw÷ai m~Pbv KZ mv‡j n‡qwQj? [g. †ev. 23] 1991 1990 1891 1890 5. Gwm‡Wi kw3i †Kvb μgwU mwVK? [g. †ev. 23] H2SO3 > HClO > HNO3 > H3PO4 HNO3 > H3PO4 > H2SO3 > HClO HClO > HNO3 > H3PO4 > H2SO3 H3PO4 > H2SO3 > HNO3 > HClO 6. wewμqvwUi •ewkó ̈ n‡jvÑ [iv. †ev. 23] (i) m¤§yL wewμqvi AvqZ‡bi ms‡KvPb N‡U (ii) AwaK cwigvY O2 †hv‡M wewμqvi mvg ̈ve ̄’v ev‡g m‡i hv‡e| (iii) cðvrgyLx wewμqvwU Zvcnvix n‡e wb‡Pi †KvbwU mwVK? ii ii I iii i I iii i, ii I iii 7. meyR imvq‡bi g~jbxwZ KqwU? [iv. †ev. 22; h. †ev. 22] 10 12 14 16

ivmvqwbK cwieZ©b  MCQ & CQ Practice Sheet (HSC 26) 3 21. PCl5(g) ⇌ PCl3(g) + Cl2(g); H = + 124 k.Jmol–1 wewμqvwU‡Z Pvc n«vm Ki‡jÑ [w`. †ev. 23] (i) Cl2 Gi cwigvY e„w× cvq (ii) wewμqv m¤§yLgyLx nq (iii) Kp Gi gvb e„w× cvq wb‡Pi †KvbwU mwVK? i I ii ii I iii i I iii i, ii I iii  wb‡Pi DÏxcKwU co Ges 22 I 23 bs cÖ‡kœi DËi `vI: P2(g) + Q2(g) ⇌ 2PQ(g); H = YkJ 22. DÏxc‡Ki wewμqvwU‡Z Pv‡ci cÖfve Kxiƒc n‡e? [Xv. †ev. 23] Pvc evov‡j Drcv` K‡g Pvc Kgv‡j Drcv` ev‡o Pv‡ci cÖfve †bB KP Kg‡e 23. DÏxc‡Ki wewμqvi †ÿ‡Î Kp I Kc Gi g‡a ̈ m¤úK© †KvbwU? [Xv. †ev. 23] Kp = Kc(RT)–1 Kc = Kp(RT)–1 Kp = Kc Kp = Kc(RT)2  wb‡Pi DÏxcKwU co Ges 24 I 25 bs cÖ‡kœi DËi `vI: X2(g) + 3Y2(g) ⇌ 2XY3(g); H = – ve wewμqvwUi mvg ̈ve ̄’vq X2, Y2 Ges XY3 Gi NbgvÎv h_vμ‡g 0.18, 0.56 Ges 0.12 molL–1 24. wewμqvwUi Kc Gi gvb n‡jv- [iv. †ev. 23; P. †ev. 23] 0.45 1.19 2.2 2.9 25. DÏxc‡K DwjøwLZ wewμqvi XY3 Gi Drcv`b e„wׇZ M„nxZ c`‡ÿcÑ [iv. †ev. 23; P. †ev. 23] (i) ZvcgvÎv evov‡Z n‡e (ii) Pvc evov‡Z n‡e (iii) XY3 wewμqv cvÎ †_‡K mwi‡q w`‡Z n‡e wb‡Pi †KvbwU mwVK? i I ii ii I iii i I iii i, ii I iii 26. DÏxcK †jLwPÎwU‡Z †`Lv‡bv n‡q‡Q- [e. †ev. 22] E2 E1 E3 P kw3 R wewμqv Aÿ wb‡Pi †KvbwU mwVK? i. Zv‡cvrcv`x wewμqv ii. wewμqv Zvc, H = E3 – E1 iii. mwμqb kw3, Ea = E2 – E1 i, ii i, iii ii, iii i, ii, iii  wb‡Pi mvg ̈ve ̄’vi wPÎwU jÿ Ki Ges 27 I 28 bs cÖ‡kœi DËi `vI: mvg ̈ve ̄’v AMÖeZ©x wewμqvi nvi cðvrgyLx wewμqvi nvi wewμqvi nvi  mgq  27. mvg ̈ve ̄’vq wb‡Pi †KvbwU mwVK? [P. †ev. 22] cÖfve‡Ki cÖfve Av‡Q cðvrgyLx wewμqvi nvi †ewk m¤§yLgyLx wewμqvi nvi †ewk KL‡bv wewμqv m¤ú~Y© nq bv 28. mvg ̈ve ̄’vi wewμq‡Ki NbgvÎv e„w× Ki‡j- [P. †ev. 22] i. mvg ̈ve ̄’vi cwieZ©b N‡U ii. mvg ̈aaæe‡Ki gv‡bi †Kv‡bv cwieZ©b N‡U bv iii. mvg ̈ve ̄’v Wvb w`‡K m‡i hvq wb‡Pi †KvbwU mwVK? i, ii i, iii ii, iii i, ii, iii 29. W + X ⇋Y + Z mvg ̈ve ̄’vi wewμqvi m¤§yLgyLx wewμqvi nviaaæeK K1 I cðvrgyLx wewμqvi nviaaæeK K2 n‡j mvg ̈aaæeK, Kc = KZ? [wm. †ev. 21] K1 K2 K –1 1 K2 K1K –1 2 K –1 1 K –1 2 30. wb‡Pi †Kvb c×wZwU Zv‡cvrcv`x? [w`. †ev. 19] Nbxfeb eÜb wefvRb Mjb ev®úxfeb 31. AbyNUK- [w`. †ev. 21] i. wewμqvi MwZ evovq ii. wewμqvi MwZ Kgvq iii. `aæZZi mvg ̈ve ̄’vq wb‡q Av‡m wb‡Pi †KvbwU mwVK? i I ii ii I iii i I iii i, ii I iii 32. †Kvb wewμqvq Zvc †kvwlZ nq? [e. †ev. 19] N2 + 3H2  2 NH3 C2H6 + O2  CO2 + H2O S + O2  SO2 N2 + O2  2 NO
4  Chemistry 1 st Paper Chapter-4 fiwμqvi m~Î I mvg ̈aaæeK (Kp Ges Kc) 33. fiwμqvq m~‡Î wb‡Pi †KvbwU‡K mwμq fi wn‡m‡e wb‡`©k Kiv nq? [Xv. †ev. 23] AvYweK fi †gvj msL ̈v cvigvYweK fi †gvjvi NbgvÎv 34. Kÿ ZvcgvÎvq cvwbi AvqwbK ̧Yd‡ji gvb KZ? [P. †ev. 23; g. †ev. 23; Xv. †ev. 22] 0.114 × 10–14 1.0 × 10–14 1.4 × 10–14 1.0 × 10–7 35. AB2(g) + 1 2 B2(g) ⇌ AB3(g) wewμqvwU‡Z Kp Ges Kc Gi g‡a ̈ m¤ú‡K©i mgxKiY †KvbwU? [P. †ev. 23] Kp = Kc Kp = Kc (RT) Kp = Kc (RT) – 1 2 Kp = Kc (RT)2 36. wb‡Pi †Kvb m¤úK©wU mwVK? [e. †ev. 23] Kc = Kp(RT)n Kp = Kc(RT)n Kc = (RT) n Kp Kp = Kc (RT) n 37. A2(g) + 3B2(g) ⇌ 2AB3(g); wewμqvi Rb ̈ Kp Ges Kc Gi g‡a ̈ m¤úK© †KvbwU? [wm. †ev. 23] Kp = Kc(RT)2 Kc = Kp(RT)2 Kp = Kc(RT)–1 Kc = Kp(RT)–2 38. wb‡Pi †Kvb wewμqvq n > 0? [w`. †ev. 23] N2O4(g) ⇌ 2NO2(g) 2SO2(g) + O2(g) ⇌ 2SO3(g) H2(g) + I2(g) ⇌ 2HI(g) N2(g) + 3 H2(g) ⇌ 2NH3(g) 39. mvg ̈ aaæe‡Ki gvbÑ [Xv. †ev. 23] (i) ZvcgvÎvi Dci wbf©ikxj (ii) cÖfveK Øviv cÖfvweZ nq bv (iii) ÿz`a n‡j wgkÖ‡Y wewμqK †ewk _v‡K wb‡Pi †KvbwU mwVK? i I ii i I iii ii I iii i, ii I iii  wb‡Pi DÏxcKwU †_‡K cieZx© cÖkœ `ywUi DËi `vI: 2SO2(g) + O2(g) 450 – 500C V2O5 2SO3(g); H = 198 kJ/mol wewμqvwUi †ÿ‡ÎÑ 40. Kp I Kc Gi m¤úK© †KvbwU? [h. †ev. 23] Kp = Kc(RT)–1 Kp = Kc(RT) Kp = Kc(RT)–2 Kc = Kp(RT)–1  wb‡Pi DÏxcKwU co Ges 41 I 42 bs cÖ‡kœi DËi `vI: PCl5(g) ⇌ PCl3(g) + Cl3(g) wewμqvi 25C ZvcgvÎvq Ges 3 atm Pv‡c PCl5(g) 80% we‡qvwRZ nq| 41. DÏxc‡Ki wewμqvq Kp Gi gvb KZ? [wm. †ev. Õ23] 2.33 atm 3.33 atm 4.33 atm 5.33 atm 42. DÏxc‡Ki †ÿ‡ÎÑ [wm. †ev. 23] (i) Cl2 Gi AvswkK Pvc 1.332 atm (ii) PCl5 Gi †gvj fMœvsk 0.111 (iii) Pvc e„w× Ki‡j PCl3 Gi Drcv`b K‡g wb‡Pi †KvbwU mwVK? i I ii ii I iii i I iii i, ii I iii  wb‡Pi DÏxcKwU co Ges 43 I 44 bs cÖ‡kœi DËi `vI: GKwU e×cv‡Î 2.5 †gvj HI †K 400C ZvcgvÎvq DËß Kiv nj| mvg ̈ve ̄’vq 25% HI we‡qvwRZ nq| 2HI(g) ⇌ H2(g) + I2(g); H = – ve 43. DÏxc‡Ki wewμqvwUi Kp Gi gvb KZ? [w`. †ev. 23] 0.16 0.0277 0.0177 0.0123 44. DÏxc‡Ki wewμqvwUi †ÿ‡ÎÑ [w`. †ev. 23] (i) ZvcgvÎv e„w× †c‡j mv‡g ̈i Ae ̄’vb evgw`‡K m‡i hvq (ii) Pvc evo‡j Kp Gi gvb evo‡e (iii) Kp I Kc Gi gvb mgvb wb‡Pi †KvbwU mwVK? i I ii ii I iii i I iii i, ii I iii 45. 2AB ⇌ A2 + B2; H = + ve GB wewμqvi Rb ̈ †KvbwU mwVK? [Xv. †ev. 22] Kp = Kc(RT)2 Kp = Kc(RT) Kp = Kc Kp = Kc(RT)3 46. Kc Gi gv‡bi †ÿ‡Î †KvbwU mwVK? [Xv. †ev. 22] Gi gvb 1 n‡Z cv‡i Gi gvb cÖfve‡Ki Dci wbf©i K‡i Gi gvb Pv‡ci Dci wbf©i K‡i Gi gvb Amxg n‡Z cv‡i 47. N2(g) + 3H2(g) ⇌ 2NH3(g) wewμqvi Kp Gi GKK †KvbwU? [iv. †ev. 22; h. †ev. 22] atm atm2 atm–1 atm–2 48. AB(g) ⇌ A(g) + B(g); wewμqvwU‡Z Kp GKK †KvbwU? [Kz. †ev. 22] atm atm–1 atm2 atm–2