Tiêu đề 1. Engg. Che. MCQ Practice Sheet (2nd) Without Sove_Solayman_(25-12-23).pdf ✅

cwi‡ek imvqb  Engineering Practice Sheet 1 cÖ_g Aa ̈vq cwi‡ek imvqb Environment Chemistry ACS Chemistry Department Gi g‡bvbxZ eûwbe©vPwb cÖkœmg~n Type-1: M ̈v‡mi m~Îmg~n, M ̈v‡mi mgš^q m~Î, Av`k© M ̈vm mgxKiY 1. 27C ZvcgvÎvq 320 atm Pv‡c 1 wU cv‡Î O2 M ̈vm Av‡Q| H M ̈v‡mi Pvc 10% evov‡Z cvÎwU‡K KZ ZvcgvÎvq ivLv‡Z n‡e? 57C 29.7C 1.86C 18.6C 2. 100C ZvcgvÎvq Ges 1.0526 atm Pv‡c CO2 M ̈v‡mi NbZ¡ KZ? 0.0129 gL–1 0.0566 gL–1 1.513 gL–1 1.36 gL–1 DËi: 1.513 gL–1 3. 27C ZvcgvÎvq 18g O2, 4L ̄’vb `Lj Ki‡j Pvc KZ? 350.38 atm 3.46 kPa 3.46 atm 350.83 Pa 4. mgZvc †iLv ev m‡gvò †iLv ev AvB‡mv_vg© Kx? M ̈v‡mi Pvc ebvg AvqZb †jLwPÎ ZvcgvÎv ebvg AvqZb †jLwPÎ ZvcgvÎv ebvg M ̈v‡mi Pvc †jLwPÎ †Kv‡bvwUB bq 5. w ̄’i DòZvq †Kvb M ̈v‡mi Pvc 4 ̧Y Ki‡j NbZ¡- Pvi ̧Y n«vm cv‡e Pvi ̧Y e„w× cv‡e wZb ̧Y e„w× cv‡e wØ ̧Y n«vm cv‡e 6. 20C ZvcgvÎvq 80 kPa Pv‡c GKwU wbw`©ó cwigvY M ̈v‡mi AvqZb 0.25 m3 | 20C ZvcgvÎvq D3 M ̈v‡mi AvqZb 0.3 m3 n‡j Pvc KZ n‡e? 66.67 Nm–2 667 kPa 66.67 kPa 66.67 atm 7. Av`©k DòZv I Pv‡c †Kvb M ̈v‡mi NbZ¡ 22 kgm–3 | Pvc w ̄’i †i‡L ZvcgvÎv 11C n«vm Ki‡j M ̈vmwUi NbZ¡ KZ n‡e? 21.11 kgm–3 22.63 kgm–3 22.92 kgm–3 †KvbwUB bq 8. V1 V2 V3 T P wb‡Pi †KvbwU mwVK? V1 > V2 >V3 V1 = V2 = V3 V3 > V2 >V1 †KvbwUB bq 9. STP †Z CO2 22.4L M ̈v‡m KqwU †cÖvUb Av‡Q? 1.325  1025 8.432  1024 6.023  1023 6.99  1023 10. w ̄’i ZvcgvÎvq M ̈v‡mi Pvc ebvg AvqZ‡bi †jLwPÎwU wKiƒc? cive„Ë Awae„Ë Dce„Ë e„Ë 11. SI GK‡K †evëRg ̈vb aaæe‡Ki gvb KZ? 1.38  10–22 J K –1molecule–1 1.38  10–23 L atm K1molecule–1 1.38  10–25 J K–1molecule–1 1.38  10–23 J K–1molecule–1 12. 0.5 gm Zij‡K m¤ú~Y©iƒ‡c ev®úxf~Z Kivq Zv 150C ZvcgvÎvq I 0.99 atm Pv‡c mL ̄’vb `Lj K‡i| Zij c`v_©wUi AvYweK fi KZ? 55.8 53.9 48.7 64 13. 27C ZvcgvÎvq 1 atm Pv‡c 25 g SO2 M ̈v‡mi AvqZb KZ? 62.98 L 973.82 L 9.61 L 12.81 L 14. 80 cm3 M ̈v‡mi AvqZb 20% ewa©Z Kiv n‡jv wKš‘ Pv‡ci †Kvb cwieZ©b n‡jv bv| cÖviw¤¢K ZvcgvÎv 25C n‡j M ̈vmwU KZ ZvcgvÎvq DËß Kiv n‡qwQj? [KUET 15-16] 357.6C 30.0C 84.6C 60.0C 76.4C
2  Chemistry 2 nd Paper Chapter- 1 15. At a constant pressure the volume of a definite mas of a gas at 100C is 200 cm3 . The volume of that gas at the same pressure and 0C will be- [IUT 14-15] 146.384 cm3 22.4 × 103 cm3 4.46 × 10–3 L 8.92 × 10–3 L 76.4C 16. 11g CO2 G KqwU AYy Av‡Q? [BUTEX 13-14] 6.023 ×1023 5.52 ×1023 1.5 ×1023 1.67 ×1023 17. cÖgvY ZvcgvÎv I Pv‡c wb‡Pi †Kvb M ̈vmwUi †gvjvi AvqZb me‡P‡q †ewk? [BUET 12-13] H2 He NItrogen †KvbwUB bq 18. V = K 1 P mgxKiY Øviv †Kvb m~·K cÖKvk Kiv nq? [BUET 10-11] A ̈v‡fvMv‡Wavi m~Î †M-jymv‡Ki m~Î Wvë‡bi m~Î None of the above 19. wb‡Pi †KvbwU Pv‡ci GKK bq? [BUET 10-11] Nm–2 atm Litre – atm Torr 20. cÖgvY ZvcgvÎv I Pv‡c nvB‡Wav‡Rb M ̈vm aviYKvix GKwU †ejy‡bi AvqZb 3.22 × 10–6 cm3 . D3 †ejy‡b KZwU nvB‡Wav‡Rb M ̈v‡mi AYy Av‡Q? [KUET 10-11] 8.6580 × 1012 8.6080 × 1012 8.6580 × 1013 8.6580 × 1011 21. S. T. P. †Z 1wU bvB‡Uav‡R‡bi AYyi AvqZb KZ? [RUET 10-11] 13.719 × 10–23 dm3 13.879 × 10–23 dm3 3.719 × 10–23 dm3 3.979 × 10–23 dm3 22. STP †Z 2.5 LCO2 M ̈v‡m KZwU AYy we` ̈gvb? [CUET 10-11] 5.71 ×1023 6.72 ×1023 6.023 ×1023 None of these 23. 80 mL gas is collected over water at 17C and 750 mm-Hg pressure. The same amount of gas occupies a volume of 72 mL at STP in dry condition. Calculate the vapor pressure at 17C. [IUT 21-22] 726.6 mm 32.41 mm-Hg 147.6 mm-Hg 23.41 mm-Hg 24. GKwU cixÿv K‡ÿi •`N ̈©, cÖ ̄’ I D”PZv h_vμ‡g 20 m, 10 m Ges 5 m| cixÿv KÿwU‡Z KZ wK‡jvMÖvg evZvm Av‡Q? [evZv‡mi ZvcgvÎv 30C Ges AvYweK fi 29] [CKRUET 20-21] 1145.45 kg 1155.44 kg 1166.46 kg 1176.50 kg 1182.78 kg 25. What will be the density of CO2 gas at 100C temperature and 1.0526 atm pressure? [IUT 19-20] 3.514 gL–1 2.514 gL–1 1.514 gL–1 0.514 gL–1 26. 650 mm Pv‡c I 30C ZvcgvÎvq 950 mL M ̈vm KZwU M ̈v‡mi AYy Av‡Q? [KUET 14-15] 0.1972 × 1023 1.9672 × 1023 1.9426 × 1021 1.9426 × 1022 2.0112 × 1023 27. 20C ZvcgÎvq 98.66 kpa Pv‡c 0.842 kg GKwU M ̈vm 0.4 m3 AvqZb `Lj K‡i| M ̈vmwUi AvYweK fi KZ n‡e?[CUET 14-15] 510.7 51.97 61.97 5.107 28. 30C ZvcgvÎv 10.0 dm3 GKwU wmwjÛv‡i Aw·‡Rb M ̈v‡mi Pv‡c 15.50 atm n‡j wmwjÛv‡i Aw·‡Rb M ̈v‡mi fi KZ?[KUET 13-14] 99.62 gm 0.06 gm 199.38 gm 187.09 gm 188.15 gm 29. 20C ZvcgvÎv I 1.5 bar Pv‡c GKwU M ̈vm 0.1 m3 AvqZb `Lj K‡i| hw` M ̈v‡mi Pvc 7.5 bar G G m1⁄4zwPZ Kivi d‡j 0.04 m3 AvqZb `Lj K‡i, Z‡e M ̈v‡mi †kl ZvcgvÎv evwni Ki| [RUET 13-14] 293C 313C 586C 213C None 30. GKRb †jvK GK wbtk¦v‡m 0.2 L evqy MÖnY K‡i ZvcgvÎv 27C Ges Pvc 1.0 atm| †jvKwU GKev‡i KZ ̧‡jv M ̈vm AYy MÖnY K‡i? [CUET 13-14] 48.9 × 1021 4.89 × 1021 4.98 × 1021 None of these 31. GKwU 1L d¬v· GKwU DØvqx Zi‡ji ev®ú Øviv 100C ZvcgvÎvq I 1 atm Pv‡c fwZ© Ki gyL eÜ K‡i IRb Kiv nj| GB IRb 23.8690 g Ges evZvm fwZ© d¬v‡·i IRb 20.0123 g n‡j ZijwUi †gvjvi fi KZ n‡e? [evZv‡mi NbZ¡ 100C ZvcgvÎv I 1 atm Pv‡c 1.188 g L–1 ] [KUET 12-13] 118.1049 † 81.7244 15644.2302 154.4854 8275.9623
cwi‡ek imvqb  Engineering Practice Sheet 3 32. 288K ZvcgvÎv I 745 mm Pv‡c 0.25 g •Re †hŠM 30 cm3 Av`a© bvB‡Uav‡Rb AYy •Zwi K‡i| GKB k‡Z© KZ †gvj bvB‡Uav‡Rb cigvYy •Zwi n‡e? [288 K ZvcgvÎvq Av`a© bvB‡Uav‡R‡bi ev®úPvc = 12.7 mm] [KUET 11-12] 1.21 × 10–3 0.034 13.6 27.4 2.43 ×10–3 33. aiv hvK, m~‡h©i †K‡›`a †h M ̈vm ̧‡jv Av‡Q Zv‡`i Mo AvYweK fi 2.0| M ̈vm ̧‡jvi NbZ¡ Ges Pvc h_vμ‡g 1.5 kg/m3 Ges 1.1 × 1010 Pa| m~‡h©i †K‡›`ai ZvcgvÎv wnmve Ki| [CKRUET 20-21] 1.76 × 1010 K 1.88 × 1011 K 1.78 × 1010 K 1.78 × 109 K 1.76 × 109 K 34. 0C ZvcgvÎv I 1.0 atm Pv‡c CO2 M ̈v‡mi NbZ¡ (g/L GK‡K) KZ n‡e? [KUET 16-17] 0.019 0.196 1.960 0.081 0.811 35. †evëRg ̈vb aaæe‡Ki GKK †KvbwU? [Agri.Guccho 20-21] J/molecule J.S J/K g/cc 36. 14g N2 M ̈v‡mi Rb ̈ †KvbwU mwVK bq? [RU 20-21] PV = nRT PV = RT/2 PV/2 = RT PV = RT 37. STP †Z 64 g O2 M ̈v‡mi AvqZb KZ? [JU 19-20] 22.4 L 44.8 L 67.2 L 89.6 L 38. STP †Z 3.2 g GKwU M ̈vm 2.24 L AvqZb `Lj Ki‡j M ̈vmwU n‡Z cv‡i....... | [JU 19-20] CO CO2 N2 O2 39. 100C ZvcgvÎvq I 1 evqgÐjxq Pv‡c 1 wK‡jvMÖvg Rjxq ev‡®úi AvqZb KZ? [DU 13-14] 12 L 100 L 1200 L 170 L 40. 12.0L AvqZ‡bi GKwU M ̈vm wmwjÛv‡i 23 C ZvcgvÎvq Ges 7.08 atm Pv‡c nvB‡Wav‡Rb M ̈vm ivLv Av‡Q| wmwjÛv‡i KZ †gvj (Mole) nvB‡Wav‡Rb M ̈vm Av‡Q? [JnU 14-15] 2.45 mol 3.45 mol 4.45 mole 5.45 mol 41. 25C ZvcgvÎvq †Kvb M ̈v‡mi AvqZb 0.01 L| M ̈vmwUi ZvcgvÎv I Pvc wØ ̧Y Kiv n‡j M ̈v‡mi AvqZb (L) KZ? 0.542 5.024 5.42 0.01 42. 5 g CO2 M ̈v‡m KqwU AYy _v‡K? 6.48  1022 6.0  1022 6.48  1018 5.48  1023 43. 17 C ZvcgvÎv I GKwU wbw`©ó Pv‡c 0.184 g H2 †h AvqZb `Lj K‡i H GKB Pv‡c wKš‘ 25C ZvcgvÎvq 3.7 g Aci GKwU M ̈vm mgAvqZb `Lj K‡i| M ̈vmwUi AvYweK fi- 22.13 41.32 44.11 46.25 44. N2 M ̈v‡mi NbZ¡ m‡ev©”P n‡e- STP †Z 0C I 2 atm-G – 17.5C I 2 atm-G – 273C I 2 atm-G 45. GKwU Mvwoi PvKvi PviwU wUDe‡K GKB AvKv‡ii mgPvc I ZvcgvÎvq wfbœ wfbœfv‡e N2, O2, H2 I He M ̈vm Øviv c~Y© Kiv n‡jv| †Kvb M ̈vmwU c~Y© Ki‡Z me‡P‡q Kg mg‡qi cÖ‡qvRb n‡e? H2 He N2 O2 46. GKB ZvcgvÎv I Pv‡c H2 M ̈vm, CnH2n – 2 AvYweK ms‡KZwewkó GKwU nvB‡WavKve©‡bi Zzjbvq 3 3 ̧Y nv‡i cwie ̈vß nq| n Gi gvb- 2 3 4 8 47. O2, N2,CH4 I NH3 M ̈v‡mi f ̈vÛviIqvjm& aaæeK a Gi gvb h_vμ‡g 1.36, 1.39, 2.25 Ges 4.17 atm L2 mol–2 n‡j †Kvb M ̈vmwU‡K Zij Kiv mnR nq? O2 N2 CH4 NH3 48. STP †Z †Kv‡bv M ̈v‡mi ms‡KvPb aaæe‡Ki gvb 1 A‡cÿv †QvU| myZivs Vm > 22.4 L Vm = 22.4 L Vm = 44.82 Vm < 22.4 L 49. wb‡Pi †KvbwU ﮋ evqyi Zzjbvq fvix? He Av`a© evqy Av`a© bvB‡Uav‡Rb bvBUavm A·vBW 50. 35C ZvcgvÎv I 1.05 atm Pv‡c 8.8 g CO2 M ̈vm †h AvqZb `Lj K‡i GKB Ae ̄’v KZ MÖvg NH3 M ̈vm IB GKB AvqZb `Lj Ki‡e- 0.85 g 1.7 g 3.4 g 6.8 g
4  Chemistry 2 nd Paper Chapter- 1 Type-2: MÖvnv‡gi M ̈vm e ̈vcb m~Î msμvšÍ mgm ̈v 51. †Kvb cÖwμqvq GKB †gŠ‡ji wewfbœ AvB‡mv‡Uv‡ci c„_KxKiY Kiv nq? wbtmiY e ̈vcb cvZb †Kjvmb 52. An unknown gas with a volume of 500 mL takes 320 sec to effuse through a thin hole. In the same temperaure and pressure, the same volume of chlorine takes 240 sec to effuse. The molecular mass of the unknown gas is: [IUT 20-21] 110.25 126.22 175.21 150.35 53. GKwU miæ wQ`ahy3 wQwc w`‡q †h mg‡q 2.0 m3 evZvm cÖevwnZ nh D3 miæ wQ`ahy3 wQwc w`‡q GKB mg‡q KZ m 3 nvB‡Wav‡Rb cÖevwnZ n‡e? [evZv‡mi Av‡cwÿK NbZ¡ 14.4] [KUET 15-16] 3.79 17.40 7.20 28.8 7.59 54. The atomic mass of H-atom is 1.0 and that of Cl- atom is 35.5. The diffusion rate of H-atom through the same orifice will be x times higher than that of Cl-atom. The value of x is- [IUT 14-15] 35.2 5.96 3.55 2 55. GKB Pv‡c I ZvcgvÎvq †Kvb cv‡Îi GKB wQ`ac‡_ A I B bvgK `ywU M ̈v‡mi wbtmiY nvi h_vμ‡g 3.0 Ges 0.2| B M ̈v‡mi NbZ¡ 14 n‡j A M ̈v‡mi NbZ¡ KZ? [CUET 11-12] 12.44 9.33 6.22 None of these 56. 238U Ges 235U AvB‡mv‡Uvc Øviv cÖ ̄‘Z UF6 M ̈v‡mi e ̈vcb nv‡ii Rb ̈ mwVK μg †KvbwU? [CUET 11-12] 235UF6 > 238UF6 238UF6 > 235UF6 235UF6 = 238UF6 None of these 57. †h Ae ̄’vq 25 sec G 15.0 m3 Aw·‡Rb M ̈vm cwie ̈vwß nq GKB Ae ̄’vq 62.5 sec G 25.0 m3 †K¬vwib M ̈vm cwie ̈vß n‡j †K¬vwi‡bi Av‡cwÿK NbZ¡ KZ? (Aw·‡R‡bi Av‡cwÿK NbZ¡ = 16) [CUET 11-12] 36.0 7.11 2.25 None of these 58. GKB ZvcgvÎv I Pv‡c †Kvb cv‡Îi GKB wQ`ac‡_ GKwU AÁvZ M ̈vm I †K¬vwi‡bi c„_Kfv‡e wbtmiY nvi h_vμ‡g 6 : 7| †K¬vwi‡bi NbZ¡ †K¬vwi‡bi NbZ¡ 36 n‡j AÁvZ M ̈v‡mi AvYweK fi KZ n‡e? [KUET 10-11] 50 52 98 25 49 59. hLb M ̈vm A Gi 7.0 †gvj Ges M ̈vm B bgcv 3.0 †gvj wgkv‡bv nq ZLb wgkÖ‡Yi †gvU Pvc nq 760 mm Hg| wgkÖ‡Yi A M ̈v‡mi AvswkK Pvc KZ n‡e? [RU 19-20] 512 mm Hg 522 mm Hg 532 mm Hg 542 mm Hg 60. GKwU AÁvZ M ̈v‡mi e ̈vcb nvi A ̈v‡gvwbqv M ̈v‡mi e ̈vcb nv‡ii 2.93 ̧Y n‡j M ̈vmwUi AvYweK fi KZ? [KU 19-20] 0.17 0.50 1.99 5.82 61. GKwU 25 cm `xN© KvuPb‡ji evgw`‡Ki gy‡L HCl M ̈vm Ges Wvb w`‡Ki gy‡L NH3 M ̈vm GKB mg‡q cÖ‡ek Kiv‡j evgw`K †_‡K KZ `~i‡Z¡ NH4Cl Gi mv`v †avuqv m„wó n‡e? [RU 17-18] 10.14 cm 10.10 cm 11.14 cm 11.10 cm 62. GKB AvqZ‡bi GKwU AÁvZ M ̈vm I †K¬vwib GKB ZvcgvÎv I Pv‡c wQ`ac_ w`‡q wbtmwiZ n‡Z h_vμ‡g 60 †m‡KÛ I 73 †m‡KÛ mgq †bq| AÁvZ M ̈vmwUi AvYweK fi KZ? [KU 17-18] 46 48 50 52 63. P w ̄’i T (k) or T V †jLwPÎwU †Kvb m~‡Îi Rb ̈ cÖ‡hvR ̈? e‡q‡ji m~Î †M-jymv‡Ki m~Î Pvj©‡mji m~Î Wvë‡bi m~Î 64. M ̈v‡mi NbZ¡ wbY©‡qi mgxKiY †KvbwU? d = RM PT d = RT PM d = PM RT d = PT RM 65. 25C ZvcgvÎvq †Kvb M ̈v‡mi †ÿ‡Î Pvc 1 atm n‡j 1 v Gi gvb 0.05 L–1 nq| 1 v Gi gvb 0.042 L–1 n‡j ZLb Pvc (P) Gi gvb KZ n‡e? 0.05 atm 20 atm 0.035 atm 0.84 atm 66. GKB ZvcgvÎv mgcwigvY (fi) A,B M ̈vm c„_Kfv‡e mgAvqZ‡b iwÿZ Av‡Q| GLv‡b MA > MC > MB n‡j †KvbwU mwVK? PA = PB = PC PA > PB > PC PA < PC < PB PB < PC < PA