Title Chemistry 2017.pdf ✅

28 XvKv †evW© 2017 welq †KvW : 1 3 7 mgq : 25 wgwbU imvqb eûwbe©vPwb Afxÿv c~Y©gvb : 25 [we‡kl `aóe ̈ : mieivnK...Z eûwbe©vPwb Afxÿvi DËic‡Î cÖ‡kœi μwgK b¤^‡ii wecix‡Z cÖ`Ë eY©msewjZ e„Ëmg~n n‡Z mwVK/ m‡e©vrK...ó Dˇii e„ËwU ej c‡q›U Kjg Øviv m¤ú~Y© fivU Ki| cÖwZwU cÖ‡kœi gvb 1| cÖkœc‡Î †Kv‡bv cÖKvi `vM/wPý †`Iqv hv‡e bv|] 1. †KvbwU B‡jKUab cwievnx? K MÖvdvBU L ÿvi `aeY M GwmW `aeY N je‡Yi `aeY 2. cUvwmqvg mvjdvB‡W mvjdv‡ii RviY msL ̈v KZ? K  2 L 0 M + 4 N + 6 3. †`nZ¡‡Ki Rb ̈ Av`k© pH gvb KZ? K 5.0 L 5.5 M 7.0 N 7.8 4. wbGPi ˆKvbwUi eÅvcb nvi meGPGq ˆewk? K He L H2 M CO2 N NH3 5. AbymÜvb I M‡elYv cÖwμqvi me©‡kl avc †KvbwU? K djvdj m¤ú‡K© AvMvg aviYvKiY L weÁvb I gvbe Kj ̈v‡Y Gi cÖfve M welqe ̄‘ m¤ú‡K© mg ̈K Ávb jvf Kiv N Z_ ̈-DcvË Gi msMVb I we‡kølY  wb‡Pi DÏxc‡Ki Av‡jv‡K 6 I 7bs cÖ‡kœi DËi `vI : CH3  CH2  CH2Cl + KOH(alc)  CH3  CH = CH2 + R(s) + H2O 6. R †hŠMwU GK ai‡bi K A ̈vj‡Kvnj L GwmW M ÿviK N jeY 7. DÏxc‡Ki A ̈vjwKbwUi i. cÖfveKxq nvB‡Wav‡R‡bkb m¤¢e ii. Rvi‡Y cUvwmqvg cvig ̈v1⁄2v‡bU cvIqv hvq iii. cwjgviKiY m¤¢e wb‡Pi †KvbwU mwVK? K ii L i I iii M ii I iii N i, ii I iii 8. j ̈vfqwm‡q KZwU †gŠj wb‡q QK ˆZwi K‡iwQ‡jb? K 33 L 63 M 67 N 92 9. †Kvb M ̈vmwU KwVb Ae ̄’vq EaŸ©cvwZZ nq? K CO L CO2 M NO2 N NH3 10. wb‡Pi †KvbwU †jW Gi AvKwiK? K wj‡gvbvBU L †ngvUvBU M g ̈vM‡bUvBUN M ̈v‡jbv 11. eø–-wfwUaq‡j cvwbi AYyi msL ̈v KZ? K 1 L 3 M 5 N 7 12. wb‡Pi †KvbwU ˆRe R¡vjvwb (bio-fuel) wn‡m‡e cwiwPZ? K CH4 L CH3OH M CH3CH2OH N CH3COOH 13. cUvwmqvg †gŠ‡ji cÖZxK †KvbwU? K P L Po M K N Ka 14. Bbmywjb bvgK cwjgv‡i KZwU A ̈vgvB‡bv GwmW _v‡K? K 20 L 21 M 22 N 23 15. †KvbwUi RviY m¤¢e? K Fe2+ L Cu2+ M Fe3+ N Na+ 16. 100 mL `ae‡Y 10.6 MÖvg †mvWv A ̈vm `aexf‚Z _vK‡j `aeYwUi NbgvÎv KZ? K 0.10 M L 0.37 M M 1.00 M N 2.65 M 17. PVC Gi g‡bvgvi i. cwj‡cÖvwcb ii. wfbvBj †K¬vivBW iii. g‡bv‡K¬v‡iv Bw_b wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 18. i‡3i wjD‡Kvwgqv †iv‡Mi wPwKrmvq †KvbwU e ̈en„Z nq? K 238Pu L 131I M 106Ru N 32P  wb‡Pi DÏxc‡Ki Av‡jv‡K 19 I 20 bs cÖ‡kœi DËi `vI : †gŠj ch©vq MÖæc P Q R 2 3 4 2 17 2 [P, Q Ges R cÖZxK A‡_© e ̈en„Z n‡q‡Q] 19. R Ges Q Øviv MwVZ †hŠMwU †Kvb `ave‡K `aexf‚Z nq? K A ̈vj‡Kvnj L cvwb M †K‡ivwmb N Kve©b †UUav‡K¬vivBW 20. DÏxc‡Ki P, Q Ges R †gŠ‡ji †ÿ‡Î μg i. Zwor FYvZ¥KZv : Q > R ii. cvigvYweK AvKvi : R > Q > P iii. AvqwbKiY c‡Ubwmqvj : R > P wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 21. wb‡Pi †KvbwU‡Z Zvgagj `aexf‚Z nq? K cvwb‡Z L mvBwUaK Gwm‡W M A ̈vj‡Kvn‡j N Kve©b †UUav‡K¬vivB‡W 22. wkí †MÖ‡Wi CaC2 †hŠ‡M †Kvb †gŠj ̧‡jv _v‡K? K As, N L N, P M As, S N As, P 23. PCl3 †hŠMwU‡Z KZ †Rvov gy3‡Rvo B‡jKUab _v‡K? K 0 L 1 M 3 N 10 24. 14R †gŠjwUi †ÿ‡Î i. Gi A·vBWwU D”P Mjbv1⁄4 I ùzUbv1⁄4wewkó ii. GwU ch©vq mviwYi PZz_© MÖæ‡ci †gŠj iii. †eavwg‡bi mv‡_ GwU AvqwbK eÜb MVb K‡i wb‡Pi †KvbwU mwVK? K i L ii M i I iii N i, ii I iii 25. SO3 M ̈v‡m wfRv bxj wjUgvm KvMR cÖ‡ek Kiv‡j †Kvb eY© aviY Ki‡e? K meyR L jvj M eY©nxb N Kgjv 1 KLMN 2 KLMN 3 KLMN 4 KLMN 5 KLMN 6 KLMN 7 KLMN 8 KLMN 9 KLMN 10 KLMN 11 KLMN 12 KLMN 13 KLMN 14 KLMN 15 KLMN 16 KLMN 17 KLMN 18 KLMN Self test 19 KLMN 20 KLMN 21 KLMN 22 KLMN 23 KLMN 24 KLMN 25 KLMN ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1 K 2 K 3 L 4 L 5 L 6 N 7 L 8 K 9 L 10 N 11 M 12 M 13 M 14 M 15 K 16 M 17 M 18 N 19 L 20 K 21 L 22 N 23 N 24 K 25 L
m„Rbkxj imvqb : beg-`kg †kÖwY  29 29 ivRkvnx †evW© 2017 welq †KvW : 1 3 7 mgq : 25 wgwbU imvqb eûwbe©vPwb Afxÿv c~Y©gvb : 25 [we‡kl `aóe ̈ : mieivnK...Z eûwbe©vPwb Afxÿvi DËic‡Î cÖ‡kœi μwgK b¤^‡ii wecix‡Z cÖ`Ë eY©msewjZ e„Ëmg~n n‡Z mwVK/ m‡e©vrK...ó Dˇii e„ËwU ej c‡q›U Kjg Øviv m¤ú~Y© fivU Ki| cÖwZwU cÖ‡kœi gvb 1| cÖkœc‡Î †Kv‡bv cÖKvi `vM/wPý †`Iqv hv‡e bv|] 1. †mvwWqvg mvjdvB‡U mvjdv‡ii RviY msL ̈v KZ? K + 6 L + 4 M + 2 N  2  wb‡Pi DÏxc‡Ki Av‡jv‡K 2 I 3 bs cÖ‡kœi DËi `vI : mvjwdDwiK Gwm‡Wi 200 mL Gi 0.5 M `aeY ˆZwi Kiv n‡jv| 2. D3 `ae‡Y `a‡ei AYyi msL ̈v KZ? K 6.02  1024 wU L 6.02  1023 wU M 6.02  1022 wU N 6.02  1021 wU 3. DÏxc‡Ki `ae‡Y 10 gm NaOH †hvM Ki‡j i. cÖkgb wewμqv NU‡e ii. `ae‡Y NaOH †_‡K hv‡e iii. 0.1 †gvj jeY Drcbœ n‡e wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 4. †KvbwU A‰Re †hŠM? K cvwb L †K‡ivwmb M †gvg N cÖvK...wZK M ̈vm 5. Wzivjywg‡b †KvbwU me‡P‡q †ewk cwigv‡Y _v‡K? K Cu L Mg M Fe N Al 6. †Kvb B‡jKUab web ̈vmwU Fe3+ Avqb Gi Rb ̈ cÖ‡hvR ̈? K 3s2 3p6 3d3 4s2 L 3s2 3p6 3d5 4s0 M 3s2 3p6 3d5 4s1 N 3s2 3p6 3d4 4s1 7. †Kvb †gŠ‡ji cÖZxK j ̈vwUb fvlv n‡Z M„nxZ n‡q‡Q? K Na L N M Ni N Mn 8. †Kvb nvB‡WavKve©bwU A ̈vjwKb †kÖwYi wØZxq m`m ̈? K C3H8 L C3H6 M C3H4 N C2H6 9. mvjdv‡ii mwVK ms‡KZ †KvbwU? K S8 L S4 M S2 N S 10. †KvbwU EaŸ©cvwZZ †gŠwjK c`v_©? K Cl L Br M S N I 11. †Kvb †gŠjwU GKvwaK †hvRbx cÖ`k©b K‡i? K O L Na M P N F 12. 1 1 H+ AvqbwU‡Z i. B‡jKUab msL ̈v (0) k~b ̈ ii. †cÖvUb msL ̈v (0) k~b ̈ iii. wbDUab msL ̈v (0) k~b ̈ wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 13. A ̈vwm‡UU g~j‡Ki †hvRbx KZ? K 1 L 2 M 3 N 4 14. †jW (II) A·vB‡Wi ms‡KZ †KvbwU? K PbO L PbO2 M Pb2O N Pb3O4 15. †Kvb AYywU fvs‡Z AwaK kw3i cÖ‡qvRb? K H2 L O2 M Cl2 N HCl 16. Ô†mvWv A ̈vmÕ cvwb‡Z `aexf‚Z n‡q m¤ú~Y©iƒ‡c †Kvb `ywU Avq‡b we‡qvwRZ nq? K Na+ , CO3 2L H+ , CO3 2 M Na+ , OH N OH , CO3 2 17. digvwjb G AvqZb wn‡m‡e wK cwigvY wg_vb ̈vj _v‡K? K 40% L 37% M 35% N 30% 18. `ye©j ÿv‡ii pH Gi gvb KZ? K 0  3 L 3  7 M 7  11 N 11  14 19. †cvjvi †hŠM n‡jv i. H2O(l) ii. HF(l) iii. CH3CH2OH(l) wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 20. ch©vq mviwY‡Z dmdiv‡mi Ae ̄’vb †Kvb MÖæ‡c? K MÖæc-17 L MÖæc-15 M MÖæc-14 N MÖæc-13 21. wWUvi‡R›U ˆZwi‡Z †Kvb GwmW e ̈en„Z nq? K HCl L HNO3 M H2SO4 N CH3COOH 22. wb‡Pi †Kvb †hŠMwU‡Z A ̈vbvqb I K ̈vUvq‡b B‡jKUab msL ̈v ci ̄úi mgvb _v‡K? K NaCl L CaS M K2O N MgCl2  wb‡Pi wewμqvwU jÿ Ki Ges 23 I 24 bs cÖ‡kœi DËi `vI : H3C  CH2  HC = CH2 Br2  'X' 23. DÏxc‡Ki nvB‡WavKve©bwU KMnO4(aq) Øviv RvwiZ Ki‡j wK ai‡bi †hŠM Drcbœ n‡e? K A ̈vjwWnvBW L A ̈vjKvBb M MøvBKj N A ̈vj‡Kb 24. 'X' †hŠMwUi bvg wK? K 1, 1-WvB‡eav‡gv weD‡Ub L 2, 2-WvB‡eav‡gv weD‡Ub M 1, 1, 2, 2-†UUav‡eav‡gv weD‡Ub N 1, 2-WvB‡eav‡gv weD‡Ub 25. †KvbwUi cÖ‡qv‡M gvwUi AZ ̈waK ÿviKZ¡ wbqwš¿Z nq? K (NH4)2SO4 L AlPO4 M CaSO4 N (NH4)3PO4 1 KLMN 2 KLMN 3 KLMN 4 KLMN 5 KLMN 6 KLMN 7 KLMN 8 KLMN 9 KLMN 10 KLMN 11 KLMN 12 KLMN 13 KLMN 14 KLMN 15 KLMN 16 KLMN 17 KLMN 18 KLMN Self test 19 KLMN 20 KLMN 21 KLMN 22 KLMN 23 KLMN 24 KLMN 25 KLMN ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1 N 2 M 3 L 4 K 5 N 6 L 7 K 8 L 9 K 10 N 11 M 12 L 13 K 14 K 15 L 16 K 17 L 18 M 19 N 20 L 21 M 22 L 23 M 24 N 25 K
30 h‡kvi †evW© 2017 welq †KvW : 1 3 7 mgq : 25 wgwbU imvqb eûwbe©vPwb Afxÿv c~Y©gvb : 25 [we‡kl `aóe ̈ : mieivnK...Z eûwbe©vPwb Afxÿvi DËic‡Î cÖ‡kœi μwgK b¤^‡ii wecix‡Z cÖ`Ë eY©msewjZ e„Ëmg~n n‡Z mwVK/ m‡e©vrK...ó Dˇii e„ËwU ej c‡q›U Kjg Øviv m¤ú~Y© fivU Ki| cÖwZwU cÖ‡kœi gvb 1| cÖkœc‡Î †Kv‡bv cÖKvi `vM/wPý †`Iqv hv‡e bv|] 1. g„`y cvbxq‡Z †KvbwU we` ̈gvb? K HCOOH L H2CO3 M CH3COOHN H3PO4 2. wcZ‡j wRsK avZzi mshyw3 KZ? K 35% L 65% M 75% N 80%  wb‡Pi wewμqvi Av‡jv‡K 3 I 4bs cÖ‡kœi DËi `vI : CH  CH 20% H2SO4  2% HgSO4 60 C X + H2O 3. X †hŠMwUi bvg Kx? K BDwiqv L B_vbj M B_vb ̈vj N B‡_b 4. D3 wewμqvq X †hŠMwU i. Ny‡gi Jla ˆZwi‡Z e ̈en„Z nq ii. RvwiZ Ki‡j GwmW ˆZwi nq iii. †Wiwjb ˆZwi‡Z e ̈en„Z nq wb‡Pi †KvbwU mwVK? K i I iii L ii I iii M i I ii N i, ii I iii 5. wb‡Pi †Kvb M ̈vm k¦vmK‡ói Rb ̈ `vqx? K N2 L H2 M Cl2 N CO2 6. †KvbwUi AvšÍtAvYweK kw3 me‡P‡q †ewk? K SO2 L CO2 M H2S N NaCl 7. wb‡Pi †Kvb †hŠMwU DØvqx? K Kc~©i L Pzbvcv_i M Lv` ̈ jeY N cUvwkqvg Av‡qvWvBW 8. c„w_exi eqm wba©vi‡Yi Rb ̈ †Kvb AvB‡mv‡UvcwU e ̈en„Z nq? K 12C L 14C M 60Co N 32P 9. Cr Gi me©ewnt ̄’ ͇̄ii B‡jKUab web ̈vm †KvbwU? K 4s2 L 4s1 M 3d5 N 3d4 10. Ae ̄’všÍi †gŠj †KvbwU? K Sc L Ca M Zn N Fe 11. Zwor FYvZ¥KZv †KvbwUi †ewk? K F L S M O N N 12. A¤øagx© A·vBW n‡”Q i. P2O5 ii. SO2 iii. NH3 wb‡Pi †KvbwU mwVK? K i L ii M i I ii N i, ii I iii 13. wbtmi‡Yi nvi †KvbwUi †ewk? K PH3 L N2O4 M SO2 N NH3  Mg(NO3)2   MgO + 2X + 1 2 O2 Dc‡ii wewμqvwU jÿ Ki Ges 14 I 15 bs cÖ‡kœi DËi `vI : 14. Dc‡ii wewμqvwU †Kvb ai‡bi? K ms‡hvRb L cÖkgb M ms‡kølY N we‡qvRb 15. 10g.Mg(NO3)2 †_‡K KZ MÖvg 'X' cvIqv hv‡e? K 6.22 g L 4.20 g M 12.44 g N 8.46 g 16. †Kvb †hŠMwU cvwb‡Z `aeYxq? K CCl4 L SiCl4 M C2H5OH N SiO2 17. Ca2+ Gi B‡jKUab web ̈v‡mi Abyiƒc i. Cl Gi B‡jKUab web ̈vm ii. Ar Gi B‡jKUab web ̈vm iii. K+ Gi B‡jKUab web ̈vm wb‡Pi †KvbwU mwVK? K ii I iii L i I ii M i I iii N i, ii I iii 18. 500 mL `ae‡Y 24.5 g H2SO4 `aexf‚Z n‡j `ae‡Yi NbgvÎv nq K 0.5 M L 0.05 M M 0.25 M N 0.1 M 19. 4.2  102 †gvj wg‡_b m¤ú~Y©iƒ‡c †cvov‡j wK cwigvY CO2 cvIqv hv‡e? K 1.85  102 g L 1.85  104 g M 1.85  105 g N 1.85  103 g 20. Zzu‡Zi ms‡KZ †KvbwU? K CuSO4.7H2O L FeSO4.7H2O M ZnSO4.5H2O N CuSO4.5H2O 21. KPz‡Z †Kvb ai‡bi c`v_© _v‡K? K A¤øxq L d ̈vU RvZxq M ÿvixq N wbi‡cÿ 22. wb‡Pi †KvbwUi RviY m¤¢e? K Fe3+ L Fe2+ M Sn4+ N Cu2+ 23. dz‡qj †m‡ji R¡vjvwb i. CH3OH ii. C2H5OH iii. †c‡Uavwjqvg wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 24. wfRv jvj wjUgvm‡K bxj K‡i †KvbwU? K SO2 L NO2 M NH3 N HCl 25. weï× cvwbi pH gvb KZ? K 4 L 5 M 6 N 7 1 KLMN 2 KLMN 3 KLMN 4 KLMN 5 KLMN 6 KLMN 7 KLMN 8 KLMN 9 KLMN 10 KLMN 11 KLMN 12 KLMN 13 KLMN 14 KLMN 15 KLMN 16 KLMN 17 KLMN 18 KLMN Self test 19 KLMN 20 KLMN 21 KLMN 22 KLMN 23 KLMN 24 KLMN 25 KLMN ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1 L 2 K 3 M 4 M 5 M 6 N 7 K 8 L 9 L 10 N 11 K 12 M 13 N 14 N 15 K 16 M 17 N 18 K 19 L 20 N 21 M 22 L 23 K 24 M 25 N