Title 01. (2nd) Che. MCQ Practice Sheet_Without Solve [Sami 18.12.23].pdf ✅

cwi‡ek imvqb  Academic Practice Sheet 1 cÖ_g Aa ̈vq cwi‡ek imvqb Environmental Chemistry ACS Chemistry Department Gi g‡bvbxZ eûwbe©vPwb cÖkœmg~n evqygЇji MVb I Dcv`vb 1. ÷av‡Uvwùqv‡i ZvcgvÎv †ewk nq, KviYÑ [BUET 21-22] c„w_exi Lye Kv‡Q m~‡h©i Lye Kv‡Q we‡kl ivmvqwbK wewμqv nq I‡Rvb ͇̄ii iwk¥ †kvl‡Yi Rb ̈ 2. wb‡¤œi †KvbwU‡K cÖgvY evqyPv‡c Zvc w`‡q Zi‡j cwiYZ Kiv hvq bv? [BUET 10-11] b ̈vc_vwjb Lvevi jeY CuCl2 †jvnv 3. wb‡Pi †KvbwU wgVv cvwbi me©e„nr Drm? [MAT 21-22; DAT 19-20] DËi †giæi eid f~Mf© ̄ cvwb `wÿY †giæi eid b`xi cvwb 4. m~‡h©i UV wewKi‡Yi ÿwZKi cÖfve †_‡K myiÿv †`qÑ [MAT 21-22] AvqbgÛj (ionosphere) I Ua‡cvgÛj (troposphere) G _vKv I‡Rvb ̄Íi (O3) AvqbgÛ‡j (ionsphere) _vKv I‡Rvb ̄Íi (O3) ÷a‡cvgÛ‡j (troposphere) _vKv †gNgvjv ÷av‡Uvwùqv‡i (stratosphere) _vKv I‡Rvb ̄Íi (O3) 5. †Kvb M ̈vmwU evZv‡m me‡P‡q †ewk cwigv‡Y _v‡K? [MAT 19-20] Hydrogen Nitrogen Carbon dioxide Oxygen 6. f~c„ô †_‡K cvVv‡bv †eZvi Zi1⁄2, evqygÛ‡ji †Kvb ͇̄i evav †c‡q cybivq c„w_ex‡Z wd‡i Av‡m? [MAT 18-19] G‡·vwùqvi Av‡qv‡bvwùqvi g ̈vM‡b‡Uvwùqvi †g‡mvwùqvi 7. evqygÛ‡ji †Kvb ͇̄i N~wY©S‡oi DrcwË nq? [DAT 19-20] Av‡qv‡bvwùqvi Ua‡cvwùqvi †g‡mvwùqvi ÷a ̈v‡Uvwùqvi 8. evqygЇji ÷a ̈v‡Uvwùqvi ͇̄ii g~j Dcv`vb †KvbwU? [DAT 19-20] Aw·‡Rb wbqb Kve©b WvBA·vBW I‡Rvb 9. f~-c„ô †_‡K Dc‡i †M‡j ZvcgvÎv KZ wWwMÖ †mjwmqvm K‡i K‡g hvq? [AFMC 20-21] 6.5 8 7 10 10. me‡P‡q †ewk cwigv‡Y I‡Rvb _v‡K †Kvb ͇̄i? [AFMC 20-21] Ua‡cvwùqvi _v‡g©vwùqvi †g‡mvwùqvi ÷a ̈v‡Uvwùqvi 11. AvenvIqvi Rb ̈ ̧iæZ¡c~Y© †KvbwU? [AFMC 19-20] Ua‡cvwùqvi †g‡mvwùqvi _v‡g©vwùqvi GUgwùqvi 12. †Møvevj Iqvwg©s G cÖavb wMÖb nvDm M ̈vm †KvbwU? [AFMC 19-20] CO2, CFC CH4, CFC CO3 2– , CFC NH3, CFC 13. evqy‡Z †Kvb wbw®Œq M ̈v‡mi cwigvY †ewk _v‡K? [CU-A 22-23; PUST 15-16] wμÞb wbqb †iWb AvM©b 14. evqygЇji †Kvb A‡j H I He M ̈v‡mi cwigvY †ewk _v‡K? [JU-D 22-23] ÷a ̈v‡Uvwùqvi _v‡g©vwùqvi G‡·vwùqvi Ua‡cvwùqvi 15. evqy‡Z N2O M ̈v‡mi evwl©K Mo e„w× KZ? [JU-D 22-23] 0.2 – 0.3% 0.5 – 0.9% 1 – 3% 0.02 – 0.1% 16. mvaviYZ mvB‡K¬vb •Zwi n‡Z mvM‡ii cvwbi ZvcgvÎv KZ nq? [JU-D 22-23] 27C 40C 52C 80C 17. eZ©gv‡b evqy‡Z wg‡_b M ̈v‡mi NbgvÎv KZ? [JU-D 22-23] 1.7 ppm 2.8 ppm 3.1 ppm 1.5 ppm 18. hw` evqygÛ‡j CO2 I Rjxq ev®ú bv _vK‡Zv Z‡e c„w_ex c„ô I ZrmsjMœ evqygÛ‡ji Mo ZvcgvÎv KZ n‡Zv? [JU-D 22-23] 15C – 15C 30C – 30C
2  Chemistry 2nd Paper Chapter-1 19. Rjxqev®ú‡K cvwb P‡μ cÖevngvb ivL‡Z c„w_exc„‡ô AvcwZZ m~h©iwk¥i kZKiv KZfvM e ̈wqZ nq? [JU-D 22-23] 23 42 34 50 20. evqygЇji M ̈vmxq c`v‡_©i †gvU fi KZ? [JU-D 22-23] 5.0  1018 kg 5.0  1018 kg 5.0  1016 kg 5.0  1016 ton 21. weÁvbx‡`i aviYv g‡Z, •ewk^K Dòvq‡bi Rb ̈ 2050 mv‡ji w`‡K kZKiv KZ fvM cÖRvcwZ wejyß n‡Z cv‡i? [JU-D 22-23] 44 34 23 42 22. Ua‡cvwùqv‡ii 12 km D”PZvq ZvcgvÎv KZ? [JU-D 22-23] 250 K 240 K 230 K 218 K 23. cwi‡ek weÁvbx‡`i aviYv g‡Z c„w_exi Mo ZvcgvÎv 2050 mv‡ji w`‡K KZ n‡Z cv‡i? [JU-D 22-23] 18C 22C 19C 20C 24. evqygÛ‡ji †Kvb AÂj‡K ÿzä gÛj e‡j? [JU-D 22-23, 21-22] Ua‡cvwùqvi ÷av‡Uvwùqvi Ua‡cvcvDR †g‡mvcvDm 25. eZ©gv‡b Ua‡cvwùqv‡ii evqy‡Z wewfbœ ̄’v‡b O3 M ̈v‡mi evwl©K Mo e„w×i nvi KZ? [JU-D 22-23] 1 – 2% 0.2 – 0.3% 0.1 – 0.3% 0.4 – 1.0% 26. f~-c„‡ôi Dci evqygÛ‡ji Pvc cÖwZ eM© Bw‡Z KZ? [JU-D 22-23] 14.7 cvDÛ 1.033 cvDÛ 17.2 cvDÛ 17.8 cvDÛ 27. evqygÛ‡ji †Kvb A‡j UV-iwk¥i cÖfv‡e M ̈vmxq AYyi we‡hvRb I B‡jKUab ̄’vbvšÍ‡ii d‡j abvZ¥K Avqb, cigvYy I AYyi wgkÖY Drcbœ nq? [JU-D 22-23] _v‡g©vwùqvi †g‡mvwùqvi Ua‡cvcvDR kvšÍgÛj 28. GKwU AÜKvi N‡i miæ wQ`a w`‡q m~‡h©i Av‡jv cÖ‡ek Ki‡j Av‡jvK iwk¥i g‡a ̈ AmsL ̈ ÿz`a ÿz`a D3⁄4¡j Av‡jvK we›`y †`Lv hvq| Giƒc Av‡jvK we›`y m„wói KviY bq †KvbwU? [RU-C 21-22] a~wjKYvi mvBR 2 nm – 500 nm Gi g‡a ̈ _v‡K wUÛvj cÖfve evqy I a~wjKYvi mgmË¡ wgkÖY a~wjKYvi eavDbxq MwZ 29. Which is the topmost layer of atmosphere? [IUT 21-22] Exosphere lonosphere Thermosphere None of these 30. Which region of atmosphere does contain Ozone layer? [IUT 10-11] Troposphere Themosphere Mesosphere Stratosphere M ̈v‡mi m~Î (e‡qj, Pvj©m I A ̈v‡fvMv‡Wav) 31. – 273C ZvcgvÎvq N2 M ̈v‡mi †gvjvi AvqZb dm3 G KZ? [DU 21-22] 0 6.023 22.4 48.789 32. GKwU Av`k© M ̈v‡mi Rb ̈ PV ebvg 1 P †jLwPÎ n‡e GKwUÑ [DU-A 21-22] †Q`Kmn mij‡iLv Awae„Ë X-A‡ÿi mgvšÍivj mij‡iLv g~jwe›`yMvgx mij‡iLv 33. cÖgvY ZvcgvÎv I Pv‡c (STP) †Kvb M ̈v‡mi 1.0 MÖvg me‡P‡q †ewk AvqZb `Lj K‡i? [DU 18-19] N2 H2 O2 Ar 34. †Kvb †jLwPÎwU w ̄’i Pv‡c Pvj©‡mi m~‡Îi mv‡_ msMwZc~Y©? [DU 14-15] T(K) V(L) T(K) V(L) T(K) V(L) T(K) V(L) DËi: T(K) V(L) 35. 101.3 kPa evwn ̈K Pv‡c cvwbi ùzUbv1⁄4 KZ? [DU 11-12] 120.8C 90.5C 100.0C 18.0C

4  Chemistry 2nd Paper Chapter-1 54. w ̄’i ZvcgvÎvq †Kvb M ̈v‡mi Pvc Ges AvqZ‡bi cwieZ©b wb‡¤œi †KvbwU? [DAT 09-10] AvB‡mv_vg©vj AvB‡mve ̈vwiK AvB‡mvÎæwbK A ̈vWvqv‡ewUK 55. w ̄’i AvqZ‡b Pvc  ZvcgvÎv †Kvb m~Î? [AFMC 19-20] WvjU‡bi A ̈vgbU‡bi A ̈v‡fv‡M‡Wavi e‡q‡ji 56. wb‡Pi †KvbwU mZ ̈? [CKRUET 22-23] Vt = P0     tC + 273 273 PV T = W M R d1 P1T1 = d2 P2T2 C = 3P M r1 r2 = d1 d2 57. ev ̄Íe M ̈vm e‡q‡ji m~Î †g‡b P‡j- [JU-A 22-23; MAT 15-16] wb¤œ ZvcgvÎvq 0C ZvcgvÎvq Kÿ ZvcgvÎvq Lye D”P ZvcgvÎvq 58. GKwU M ̈v‡mi ZvcgvÎv 17C n‡Z evov‡bv n‡jv| d‡j M ̈v‡mi Pvc AcwiewZ©Z iBj wKš‘ M ̈v‡mi AvqZb wØ ̧Y n‡q †Mj| ZvcgvÎv KZ evov‡bv n‡jv? [JU-D 22-23] 290C 310°C 501C 580C 59. 27C ZvcgvÎvq GKwU M ̈vm wmwjÛv‡i 5.0 L M ̈vm Av‡Q| w ̄’i Pv‡c H wmwjÛv‡ii ZvcgvÎv 30C Kiv n‡j H wmwjÛvi n‡Z KZ AvqZb M ̈vm †ei n‡q hv‡e? [JU-D 22-23] 0.05 L 5.05 L 5.0 L 0.01 L 60. w ̄’i Pv‡c wbw`©ó f‡ii N2 M ̈vm 27C ZvcgvÎvq 906 mL AvqZb `Lj K‡i| ZvcgvÎv KZ n‡j H M ̈v‡mi AvqZb 500 mL n‡e? [JU-D 22-23; IU 13-14] – 101.78C 101.78C 107.44C – 107.44C 61. 27C ZvcgvÎvq 300 mL cwigvY GKwU M ̈v‡mi GKB Pv‡c †i‡L 7C ZvcgvÎvq wb‡q Avmv n‡j M ̈vmwUi AvqZb n‡e- [JU-A 22-23; MAT 15-16] 280 mL 540 mL 350 mL 135 mL 62. 27C ZvcgvÎvq Ges evqygÛjxq Pv‡c wbw`©ó cwigvY evqyi AvqZb 500 cm3 Ges evqyi Pvc w ̄’i _vK‡j KZ ZvcgvÎvq H cwigvY evqyi AvqZb wØ ̧Y n‡e? [JU-D 22-23] 327C 327 K 650 C 650 K 63. GKwU Aw·‡Rb wmwjÛvi 250 atm Pvc mn ̈ Ki‡Z cv‡i| wmwjÛviwU‡K 125 atm Pv‡c I 27C ZvcgvÎvq Aw·‡Rb M ̈vm Øviv c~Y© Kiv n‡jv| KZ ZvcgvÎvq wmwjÛviwU we‡ùvwiZ n‡e? [JU-D 22-23] 300 K 327C 500 K 350C 64. cÖgvY ZvcgvÎv I Pv‡c CO2 M ̈v‡mi NbZ¡ n‡jv 22 kg m–3 | Pvc w ̄’i †i‡L 11C ZvcvgvÎvq H M ̈v‡mi NbZ¡ KZ n‡e? [JU-D 22-23] 25.52 kg m–3 25.52 g m–3 21.15 kg m–3 21.15 g m–3 65. STP †Z GKwU M ̈v‡mi NbZ¡ 2.5 g L–1 | GKB ZvcgvÎvq I 780 mm (Hg) Pv‡c M ̈vmwUi NbZ¡ KZ? [RU-C 22-23] 2.50 2.51 2.54 2.45 66. mgAvqZb cv‡Î †Kvb M ̈vmwUi Pvc me©wb¤œ? [RU-C 22-23] 71 g Cl2 8 g He 16 g O2 17 g NH3 67. 0.95 atm Pv‡c 25C ZvcgvÎvq GKwU M ̈v‡mi AvqZb 4 L n‡j D3 ZvcgvÎvq 1.0 atm Pv‡c M ̈vmwUi AvqZb KZ n‡e? [JU-A 21-22] 0.38 L 0.39 L 0.308 L 3.8 L 68. 30C ZvcgvÎvq 120 cm3 AvqZb cv‡Î GKwU wbw`©ó M ̈vm 120 kPa Pvc cÖ`vb K‡i| GKB ZvcgvÎvq D‡jøwLZ M ̈vm‡K 100 cm3 AvqZ‡bi GKwU cv‡Î ̄’vbvšÍwiZ Kiv n‡j M ̈vmwUi Pvc KZ n‡e? [JU-A 21-22] 140 kPa 14.4 kPa 144 kPa 1.44 kPa 69. wbw`©ó Pv‡c 12C ZvcgvÎvq GKwU wbw`©ó cwigvY M ̈v‡mi AvqZb 0.65 L| Pv‡ci cwieZ©b bv n‡j KZ wWwMÖ ZvcgvÎvq D3 M ̈v‡mi AvqZb 0.75 L n‡e? [JU-A 21-22] 32.885 K 3288.46 K 328.85 K 318.85 K 70. cÖgvY ZvcgvÎv I Pv‡c GKwU M ̈v‡mi NbZ¡ 29 kg/m3 n‡j 17C ZvcgvÎvq H M ̈v‡mi NbZ¡ KZ n‡e? [JU-D 21-22] 27.3 Kg/m3 493 Kg/m3 1.7 Kg/m3 46 Kg/m3 71. 1000 mL cvwb‡Z 400 g NaOH †hvM Ki‡j NbgvÎv nqÑ [JU-D 21-22] 100 M 10 M 0.1 M 1.0 M