chemistry_1st 2022

8 cvGéix ‰BP‰mwm ˆgBW BwR: cÉk²cò imvqb cÉ^g cò 9. ˆfvjv miKvwi KGjR, ˆfvjv imvqb: cÉ^g cò welq ˆKvW: 1 7 6 mgq-2 N¥Ÿv 35 wgwbU m†Rbkxj cÉk² gvb: 50 1. K L M N K. AiweUvj Kx? 1 L. jeGYi gƒjK kbvÚKiGY wkLv cixÞvq HCl eÅenvi Kiv nq ˆKb? 2 M. DóxcGKi ˆgŒGji M ˆkGji kwÚ wbYÆq Ki| 3 N. DóxcGKi ˆgŒjwUi BGjKUÇb mGeÆvœP Õ¦i ˆ^GK K Õ¦Gi Õ©vbv¯¦Gii ˆÞGò m†Ó¡ ˆiLvi cÉK‡wZ weGkÏlY Ki| 4 2. bvBGUÇvGRb ‰es AwÝGRb h^vKÌGg 'X' I 'Y' bvgK nvBWÈvBW ˆhŒM MVb KGi| Drc®² ˆhŒM `ywU mvaviY AeÕ©vq h^vKÌGg MÅvmxq ‰es Zij AeÕ©vq ^vGK| K. AeÕ©v¯¦i ˆgŒj Kx? 1 L. SO3 ‰i Rjxq `ËeY cÉK‡wZ eÅvLÅv Ki| 2 M. DóxcGKi ˆhŒM«¼Gqi ˆfŒZ AeÕ©vi wf®²Zvi KviY ˆjL| 3 N. DóxcGKi 'X' I 'Y' ˆhŒGM m†Ó¡ e®¬b ˆKvGYi wf®²Zvi KviY eÅvLÅv Ki| 4 3. 25C Zvcgvòvq `ywU cixÞvbGj h^vKÌGg 20 mL 0.02 M AgNO3 ‰es 40 mL 0.04M NaCl ivLv AvGQ| DÚ Zvcgvòvq AgNO3 ‰i `ËveÅZv 2.2 103 g/L ‰es AgCl ‰i `ËveÅZv àYdj 1.8 1010 [Ag ‰i cvigvYweK fi 108] K. `ËveÅZv Kx? 1 L. `ËeGY CO3 2- KxfvGe kbvÚ KiGe? 2 M. DóxcGK ewYÆZ Zvcgvòvq cÉ^g cixÞvbGji `ËeGYi `ËveÅZv àYdj wbYÆq Ki| 3 N. DóxcGKi DwÍÏwLZ `ËeY `ywU ˆ^GK AatGÞcGbi mÁ¿vebv hvPvB Ki| 4 4. `ËeY msGKZ A 10% CH3COOH B NH3 C NaOH K. wcÉRviGfwUfm Kx? 1 L. `ya ‰KwU KjGqW eÅvLÅv Ki| 2 M. Lv`Å msiÞGY A `ËeGYi ˆKŒkj eYÆbv Ki| 3 N. MÐvm KÑxbvi wnGmGe B I C `ËeGYi DchyÚZv gƒjÅvqb Ki| 4 5. i) A2(g) + 3B2(g) Zvc HooooI Pvc 2AB3(g) H = Ve K. wewKÌqvi nvi Kx? 1 L. mvgÅvâ Amxg nGZ cvGi bv ˆKb? 2 M. weGqvRb aË‚eK aGi DóxcGKi wewKÌqvi Kp ‰i ivwkgvjv cÉwZcv`b Ki| 3 N. DóxcGKi wewKÌqvwUi AwaK cwigvY Drcv` m†wÓ¡i ˆÞGò jÅvkÅvGZwjqvGii bxwZi cÉGqvM eYÆbv Ki| 4 6. chÆvq MË~c-1 MÉ‚c-2 MË~c-3 MË~c-16 MË~c-17 w«¼Zxq X Z†Zxq A B C D K. AeÕ©v¯¦i ˆgŒj Kx? 1 L. F meÆvGcÞv Zwor FYvñK ˆgŒj eÅvLÅv Ki| 2 M. DóxcGK DwÍÏwLZ Z‡Zxq chÆvGq ˆgŒjàGjvi mvG^ X ‰i mg®¼Gq m†Ó¡ ˆhŒMmgƒGni Rjxq `ËeY cÉK‡wZ wbi…cY Ki| 3 N. DóxcGK DwÍÏwLZ A, B I C ‰i mvG^ D ‰i mg®¼Gq m†Ó¡ ˆhŒMmgƒGni mgGhvRx Pwiò weGkÏlY Ki| 4 7. i) N2O4(g) HooooooI 2NO2(g) H = +57.2 kJ/mol K. wewKÌqv Zvc Kx? 1 L. `yeÆj ‰wmW I ZxeË ÞvGii cÉkgb ZvGci cÉK‡wZ eÅvLÅv Ki| 2 M. 27C Zvcgvòvq 1 atm PvGc wewKÌqGKi 25% weGqvwRZ nGj wewKÌqvq AvswkK PvGc mvgÅvâ wbYÆq Ki| 3 N. DóxcK mswkÏÓ¡ wewKÌqvq ˆÞGò mvgÅvGâi mvG^ Zvcgvòv mÁ·KÆ weGkÏlY Ki| 4 8. 25 mL 0.1 M Ka = 1.8 10–4 15 mL 0.1 M cvò«¼Gqi `ËeGYi wgkÉY cvò-1 (HA) cvò-2 (NaOH) cvò-3 K. UvBGUÇkb Kx? 1 L. ˆmGK´£vwi Õ¡Åv´£vWÆ c`vG^Æi `ywU cÉavb ŠewkÓ¡Å ˆjL| 2 M. DóxcGKi 1 bs cvGòi `ËeGYi pH wbYÆq Ki| 3 N. DóxcGKi 3 bs cvGò mvgvbÅ jNy HCl ˆhvM Kiv nGj wgkÉGYi pH cwieZÆGbi Õ¼i…c eÅvLÅv Ki| 4