Title Chemistry All Board M.C.Q Questions.pdf ✅

10 XvKv †evW© 2020 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. †Kvb †gŠj iwOb †hŠM ˆZwi‡Z e ̈en„Z nq? K F L Si M Fe N Al 2. Uq‡jU wK¬bv‡ii g~j Dcv`vb †KvbwU? K NaOH L Ca(OH)2 M KOH N Al(OH)3 3. †K‡ivwmb I †gv‡gi g~j Dcv`vb †KvbwU? K mvjdvi L nvB‡WavKve©b M Kv‡e©vnvB‡WaU N Kve©b 4. Zzu‡Zi ms‡KZ †KvbwU? K CuSO4.7H2O L FeSO4.2H2O M ZnSO4.5H2O N CuSO4.5H2O 5. Ca(OH)2 + Cl2  40 C ÔXÕ + H2O X †hŠMwU i. weøwPs cvDWvi ii. weRviY cÖwμqvq weiÄb NUvq iii. RxevYy aŸsmKi‡Y e ̈en„Z nq wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 6. †KvbwU ÿvi bq? K Ca(OH)2 L Fe(OH)2 M NH4OH N NaOH 7. HCHO Gi Rjxq `aeY‡K wb¤œPv‡c DËß Ki‡j †KvbwU Drcbœ nq? K †gjvgvBb L †Udjb M wcwfwm N †Wivwjb 8. cvwbi ̄’vqx LiZvi Rb ̈ `vqx i. CaSO4 ii. Ca(HCO3)2 iii. MgCl2 wb‡Pi †KvbwU mwVK? K i I ii L ii I iii M i I iii N i, ii I iii 9. KO2 †hŠ‡M Aw·‡R‡bi RviY msL ̈v KZ? K  2 L  1 M  1 2 N + 1 2 10. †KvbwU RviK c`v_©? K Zn L Cl M O2 N Cu+ 11. Zvc cÖ‡qvM Ki‡j KwVb c`v_© Zi‡j cwiYZ nq| KviY i. AvšÍtAvYweK kw3 n«vm cvq ii. AYyi MwZkw3 e„w× N‡U iii. AvšÍtAvYweK `~iZ¡ n«vm cvq wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 12. CaC2 + H2O  A + Ca(OH)2 wewμqvq ÔAÕ †hŠMwU n‡”Q K C2H2 L C2H4 M CaCO3 N CaO 13. K ̈vjwmqvg †gŠ‡ji B‡jKUab web ̈v‡mi kw3 ̄Íi KqwU? K 2 L 3 M 4 N 5 14. f‚-Z¡‡K Na Gi kZKiv cwigvY KZ? K 5% L 4% M 3% N 2%  ch©vq mviwYi LwÐZ Ask : A Si B S Cl [GLv‡b A I B cÖZxKx A‡_© e ̈en„Z] DÏxc‡Ki Av‡jv‡K wb‡Pi `ywU cÖ‡kœi DËi `vI : 15. ÔBÕ †gŠjwU ch©vq mviwYi †Kvb ch©vq I MÖæ‡c Ae ̄’vb Ki‡Q? K ch©vq-2, MÖæc-3 L ch©vq-3, MÖæc-15 M ch©vq-4, MÖæc-11 N ch©vq-6, MÖæc-12 16. DÏxc‡Ki ÔAÕ †gŠjwUi AvKwiK †KvbwU? K Pvj‡KvmvBU L wj‡gvbvBU M †ngvUvBU N e·vBU 17. gwiPvi ms‡KZ †KvbwU? K Fe2O.nH2O L Fe2O3.H2O M Fe2O3.nH2O N FeO3.nH2O 18. †KvbwU g„`y Zwor we‡køl ̈? K H2O L CuSO4 M NaCl N H2SO4  0.8 wjUvi cvwb 42 MÖvg †mvwWqvg nvB‡Wav·vBW DÏxc‡Ki Av‡jv‡K wb‡Pi 19 I 20bs cÖ‡kœi DËi `vI : 19. weKv‡i wgwkÖZ `aeYwUi NbgvÎv KZ? K 1.54 M L 1.50 M M 1.20 M N 1.04 M [* we.`a. : mwVK DËi 1.31 M] 20. D3 `ae‡Y 15 MÖvg nvB‡Wav‡K¬vwiK GwmW †hvM Ki‡j i. 25.56 g †mvwWqvg nvB‡Wav·vBW Aewkó _v‡K ii. Drcbœ jeYwU ÿvixq cÖK...wZi iii. Drcbœ jeYwUi fi 24.04 g wb‡Pi †KvbwU mwVK? K i I ii L ii I iii M i I iii N i, ii I iii 21. CuSO4 Gi Av‡cwÿK AvYweK fi KZ? K 111.5 L 125.0 M 143.5 N 159.5 22. †mvWv A ̈v‡mi ms‡KZ †KvbwU? K NaHCO3 L Na2CO3 M CaCO3 N Na2CO3.10H2O 23. †KvbwU mg‡hvRx †hŠM? K HCl L CaCl2 M Al2O3 N MgO 24. CO2 †hŠ‡M Kve©‡bi myß †hvRbx KZ? K 0 L 2 M 4 N 6 25. 1 †gvj wg‡_b M ̈vm †cvov‡j KZ kJ Zvc Drcbœ nq? K 880 L 890 M 980 N 990 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 M 2 K 3 L 4 N 5 L 6 L 7 N 8 M 9 M 10 N 11 K 12 K 13 M 14 M 15 L 16 N 17 M 18 K 19 * 20 M 21 N 22 L 23 K 24 K 25 L
m„Rbkxj imvqb : beg-`kg †kÖwY  11 11 ivRkvnx †evW© 2020 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. Wzivjywg‡b A ̈vjywgwbqv‡gi kZKiv mshyw3 KZ? K 4% L 74% M 87.5% N 95% 2. Møvm wK¬bv‡ii g~j Dcv`vb †KvbwU? K Ca(OCl)Cl L Ca(OH)2 M NaOH N NH3 3. †gv‡gi `n‡b Drcbœ nq i. Kve©b WvBA·vBW ii. nvB‡Wav‡Rb iii. Rjxq ev®ú wb‡Pi †KvbwU mwVK? K ii L iii M i I iii N ii I iii 4. PVC Gi g‡bvgvi †KvbwU? K CH2 = CH2 L H2C = CHCl M F2C = CF2 N CH3  CH = CH2 5. †KvbwU B‡jKUabxq cwievnx? K Avqib L mvjdvi M GwmW N je‡Yi `aeY 6. 100 mL `ae‡Y 9.8 gm mvjwdDwiK GwmW `aexf‚Z _vK‡j `ae‡Yi †gvjvwiwU KZ? K 0.01 M L 0.1 M M 1 M N 2 M 7. cUvwmqv‡gi cvigvYweK msL ̈v KZ? K 15 L 19 M 31 N 39 8. mv`v †auvqv m„wó K‡i †KvbwU? K A ̈v‡gvwbqvg †K¬vivBW L A ̈vjywgwbqvg †K¬vivBW M b ̈vc_vwjb N Kc~©i 9. fvix avZz †KvbwU? K cUvwmqvg L †ewiwjqvg M K ̈vWwgqvg N wjw_qvg 10. †KvbwU cvwb‡Z A`aeYxq? K CCl4 L HCl M CH3  COOH N C2H5OH  †kÖwY  1 2 17 18 1 E 2 D ch©vq  3 X Y G [GLv‡b X, Y, D, E I G cÖZxKx A‡_©; cÖK...Z †gŠ‡ji cÖZxK bq|] DÏxc‡Ki Av‡jv‡K 11 I 12bs cÖ‡kœi DËi `vI : 11. †KvbwUi AvqwbKiY kw3 me‡P‡q Kg? K X L Y M E N G 12. DÏxcK Abymv‡i i. X †gŠj A‡cÿv Y †gŠ‡ji avZe ag© Kg ii. D †gŠjwUi Zwor FYvZ¥KZv me‡P‡q †ewk iii. Y †gŠjwU G Gi B‡jKUab web ̈vm jvf Ki‡Z cv‡i wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 13. †KvbwUi e ̈vc‡bi nvi †ewk? K bvB‡Uav‡Rb L †K¬vwib M nvB‡Wav‡Rb N Aw·‡Rb 14. A ̈vjywgwbqvg mvj‡d‡Ui GKwU AYy‡Z KZwU cigvYy _v‡K? K 5 L 10 M 14 N 17 15. 10 g NaOH Gi mv‡_ 5 g CO2 Gi wewμqv m¤úbœ Kiv nj| wewμqvq i. 15 g jeY Drcbœ nq ii. 0.909 g NaOH Aewkó _v‡K iii. 6.8  1022 wU H2O AYy Drcbœ nq wb‡Pi †KvbwU mwVK? K ii L iii M ii I iii N i, ii I iii 16. Na2SO4 †hŠ‡M mvjdv‡ii RviY msL ̈v KZ? K + 2 L + 2.5 M + 4 N + 6 17. `ye©j A¤ø †KvbwU? K HCl L HNO3 M H2CO3 N H2SO4 18. †c‡Uav‡ji mv‡_ R¡vjvwb wnmv‡e †Kvb c`v_©wU wgkv‡bv nq? K wg_vb ̈vj L AK‡Ub M †n‡Þb N B_vbj  mgq B C wewμqvi nvi  19. wP‡Î BC †iLv Øviv †KvbwU eySvq? K wewμq‡Ki NbgvÎv L wewμqvi mvg ̈ve ̄’v M wewμqvi nvi N Drcv‡`i NbgvÎv 20. †KvbwU weRviK? K †K¬vwib L Aw·‡Rb M Kve©b N mvjdvi 21. O2 Gi eÜb kw3 KZ wK‡jvRyj/ †gvj? K 151 L 244 M 464 N 498 22. BD‡iv‡c e ̈en„Z A ̈vjywgwbqv‡gi kZKiv KZ fvM cybtcÖwμqvRvZK...Z? K 21% L 28% M 60% N 74% 23. i‡3i pH gvb KZ? K 4.8  5.5 L 5.5  6.5 M 7.35  7.45 N 8.1  8.6 24. f‚-Z¡‡K †Kvb Dcv`vb †gŠjwUi kZKiv cwigvY †ewk? K wmwjKb L Aw·‡Rb M A ̈vjywgwbqvgN cUvwmqvg 25. †KvbwUi AvšÍtKYv AvKl©Y kw3 †ewk? K wg‡_b L Pzbvcv_i M mqvweb †Zj N †K‡ivwmb 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 N 3 M 4 L 5 K 6 M 7 L 8 K 9 M 10 K 11 K 12 K 13 M 14 N 15 M 16 N 17 M 18 N 19 L 20 M 21 N 22 M 23 M 24 L 25 L