beg †kÖwYi we‡kl Abykxjb (GmGmwm - 2022) - 2020

beg †kÖwYi we‡kl Abykxjb (GmGmwm - 2022) - 2020

Aa¨vq :2,3

welq †KvW : 137 welq : imvqb (m„Rbkxj)

mgq: 1NÈv c~Y©gvb: 20 [ we:`ª: Wvb cv‡ki msL¨v cÖ‡kœi c~Y©gvb ÁvcK| cÖ`Ë DÏxcK¸‡jv g‡bv‡hvM w`‡q c‡ov Ges mswkøó cÖkœ¸‡jvi h_vh_ DËi `vI|]

1| `yB gyL †Lvjv GKwU KvPb‡ji ˆ`N©¨ 70cm| KvPb‡ji GK gy‡L A¨v‡gvwbqv `ªeY wm³ GK UzKiv Zzjv Ges Aci gy‡L nvB‡Wªv‡K¬vwiK GwmW `ªeY wm³ Av‡iK UzKiv Zzjv ivLv nj| Ges wKQy¶Y ci †`Lv †Mj HCl Gi w`‡K NH₄Cl Gi Nb

mv`v †avqv m„wó n‡q‡Q|

K) Ea٩cvZb Kx ? 1

L) ‡fŠZ I ivmvqwbK cwieZ©‡bi cv_©K¨ ‡j‡Lv| 2

M) DÏxc‡Ki cÖwµqvwU e¨envi K‡i Kxi~‡c AvB‡mv‡Uvcmg~‡ni c„_KxKiY Ki‡e? 3

N) DÏxc‡K DwjøwLZ KvPb‡ji g‡a¨ Amg `~i‡Z¡ Nb mv`v †avqv m„wói †hŠw³K KviY-we‡kølY K‡iv| 4

2| K) myßZvc Kv‡K e‡j? 1

L) †K¬vwi‡bi 2wU AvB‡mv‡Uvc Av‡Q h_v ³⁵Cl 17 Ges ³⁷Cl 17 I †K¬vwi‡bi Av‡cw¶K cvigvYweK fi 35.5n‡j †K¬vwi‡bi 2wU AvB‡mv‡Uv†ci cÖvK…wZK cÖvPzh©Zvi cwigvY KZ? 2

M) DÏxc‡Ki cÖ_g g‡WjwU‡Z Kx Kx ÎæwU Av‡Q? 3

N) g‡Wj `ywUi MªnY‡hvM¨Zv we‡kølY K‡iv| 4

beg †kÖwYi we‡kl Abykxjb (GmGmwm - 2022) - 2020

Aa¨vq :2,3

welq †KvW : 137 welq: imvqb (eûwbe©vPwb)

mgq: 30 wgwbU [we:`ª: mwVK Dˇii eY©wU DËimn LvZvq ‡j‡Lv|] c~Y©gvb:30 1| Aw·‡Rb †gŠ‡ji cigvYy‡Z GKwU †cÖvUb cÖ‡ek Kiv‡bv m¤¢e n‡j GwU †Kvb †gŠ‡ji cigvYy‡Z cwiYZ n‡e ?

(K) Kve©b (L) bvB‡Uªv‡Rb (M) AwK&ª‡Rb (N) ‡d¬vwib 2| AvDdevD bxwZ‡Z †KvbwU mwVK?

(K) 3p4s3d4p5s4d (L) 3p3d4s4p4d5s (M) 3p4s3d4p4d5s (N) 3p4d4s5s4p4d 3| B‡jKUª‡bi cÖK…Z fi KZ?

(K) 9.1110^28g (L) 1.67310^24g (M) ^{1.6751024g} (N) 9386710^24g 4| wb‡Pi †Kvb cigvYy †Rvo Gi wbDUªb msL¨v GKB?

(K) Ar K

19 ,40 18

40 (L) O O

8 ,17 8

16 (M) C N

7 ,14 6

13 (N) CI K

19 ,40 17 37

wb‡Pi DÏxcKwU c‡ov Ges 5 I 6 b¤^i cÖ‡kœi DËi `vI :

5| DÏxc‡Ki †ÿ‡Î-

(i) X A‡cÿv Y Gi ms‡KvPbkxjZv †ewk (ii) Y Gi AvK…wZ wbw`©ó (iii) Z Gi NbZ¡ me‡P‡q Kg wb‡Pi †KvbwU mwVK ?

(K) i I ii (L) ii I iii (M) i I iii (N) i , ii I iii 6| Z Gi †ÿ‡Î †KvbwU wbw`©ó?

(K) AvKvi (L) AvK…wZ (M) AvqZb (N) fi 7| wb‡Pi †KvbwU e¨wZµgagx© B‡jKUªb web¨vm cÖ`k©b K‡i?

(K) Mo(42) (L)Mn(25) (M)Fe^2(26) (N) Fe^3(26) 8| ⁵⁶₂₆Fe^2, ⁵²₂₄Cr, ⁵⁹₂₇Co^3 Gi g‡a¨ i‡q‡Q-

(i) mgvb msL¨K B‡jKUªb (ii) GKB B‡jKUªb web¨vm (iii) wfbœ †cÖvUb msL¨v wb‡Pi †KvbwU mwVK?

(K) i I ii (L) ii I iii (M) i I iii (N) i,ii I iii 9| Avjdv KYvq we`¨gvb-

 

i `ywU †cÖvUb

 

ii `ywU B‡jKUªb

 

iii `ywU wbDUªb wb‡Pi ‡KvbwU mwVK?

(K) i (L) ii I iii (M) i I iii (N) i,ii I iii 10| ‡Kvb †gŠjwUi B‡jKUªb web¨v‡m mKj AiweUvj c~Y© bq?

(K) Ne (L) He (M) Xe (N) F 11| ‡KvbwUi †ÿ‡Î †ev‡ii ZË¡ cÖ‡hvR¨ bq?

(K) H (L) He⁺ (M) H⁺ (N) Li²⁺

12| ‡Kvb m~‡Îi mvnv‡h¨ GKwU Dc¯Í‡ii †gvU B‡jKUªb msL¨v MYbv Kiv nq?

(K) 2n² (L) 2ⁿ (M) (2l1) (N) 2(2l1) 13| wb‡Pi †Kvb †gŠjwUi †Kvb AvB‡mv‡Uvc †bB?

(K) Au (L) Ag (M) Al (N) Si wb‡Pi DÏxc‡Ki Av‡jv‡K 14 I 15 b¤^i cÖ‡kœi DËi `vI :

14| DÏxc‡Ki wP‡Î `kvi cwieZ©b n‡q‡Q KZ evi ?

(K) 1 (L) 2 (M) 3 (N)4 X

Zvc cÖ‡qvM

Zvc n«vmKiY Y

Zvc cÖ‡qvM

Zvc n«vmKiY Z

15| Dc‡ii DÏxc‡Ki †ÿ‡Î-

(i) A-B KwVb (ii) B-C Zij (iii) C-D M¨vmxq wb‡Pi †KvbwU mwVK ?

(K) i I ii) (L) ii I iii (M) i I iii (N) i , ii I iii 16| ‡KvbwU †ev‡ii ZË¡ Abyhvqx wØZxq K‡ÿi GKwU B‡jKUª‡bi †KŠwYK fi‡eM?

(K)

 2

h (L)

 h 2

(M)

 2

3h (N)

 h 17| ‡Kvb AiweUv‡j Av‡M B‡jKUªb cÖ‡ek Ki‡e?

(K) 4f (L) 5d (M) 6p (N) 7s 18| KZ Pv‡c ùzUbv¼ gvcv nq?

(K) 0.01atm (L) 0.1atm (M) 1atm (N)100 atm 19| AvšÍ:AvYweK kw³ Kx?

(K) AYymg~‡ni ci®ú‡ii AvKl©Y (L) cigvYymg~‡ni ci®ú‡ii AvKl©Y (M) cigvYymg~‡ni ci®ú‡ii weKl©Y (N) AYyymg~‡ni ci®ú‡ii weKl©Y 20| cvKv KuvVv‡ji Z¡‡Ki wQ`ªc‡_ MÜ †ei n‡q Avmv‡K Kx e‡j ?

(K) e¨vcb (L) wb:miY (M) cÖ‡¯^`b (N) mv‡jvK-ms‡kølY 21| DaŸ©cvZb‡hvM¨ c`v_©-

(i) b¨vc_wjb (C10H8) I A¨vjywgwbqvg †K¬vivBW (AlCl3) (ii) wbkv`j (NH₄Cl) I CO₂ (s)

(iii) Kc~©i (C10H16O) I Av‡qvwWb (I2) wb‡Pi †KvbwU mwVK ?

(K) i I ii (L) (ii) I iii (M) i I (iii) (N) i , ii I iii 22| ‡Kvb †gŠjwUi B‡jKUªb web¨v‡m mKj AiweUvj c~Y© bq?

(K) Ne (L) He (M) Xe (N) F 23| wb‡Pi ‡Kvb M¨v‡mi e¨vcb nvi me‡P‡q Kg ?

(K) NH3 (L) CH4 (M) CO2 (N) N2

24| G›Uvwm‡W _v‡K-

(i) Mg(OH)2 (ii) Al(OH)₃ (iii) Fe(OH)3 wb‡Pi ‡KvbwU mwVK?

(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii 25| _vBi‡qW MÖwš’i †Kvl-Kjv e„w× cÖwZnZ Ki‡Z †Kvb AvB‡mv‡Uvc e¨eüZ nq?

(K) P 15

32 (L) C 6

14 (M) Co 27

60 (N) I 53 131 26| wmGbwR Kx ?

(K) m¤úªmvwiZ cÖvK…wZK M¨vm (L) msKzwPZ cÖvK…wZK M¨vm (M) msKzwPZ weD‡Ub M¨vm (N) GK ai‡bi ‡eex U¨vw·

27| wb‡Pi †Kvb cigvYy †Rvo Gi fimsL¨v GKB?

(K) Ar K

19 ,40 18

40 (L) O O

8 ,17 8

16 (M) C N

7 ,14 6

13 (N) CI K

19 ,40 17 37

28| GK Wvëb KZ g Gi mgvb-

(K) 1.6610^23g (L) 1.6610^24 g (M) ^{1.671024} g (N) 1.67310^23 g wb‡Pi DÏxcKwU c‡o 29 I 30 b¤^i cÖ‡kœi DËi `vI:

‡gvg + O2  X + H2O

29| X - ‡hŠMwUi ms‡KZ Kx?

(K) CO2 (L) CO (M) CH4 (N) H2

30| DÏxc‡Ki wewµqvwU‡Z-

(i) Zvc Drcbœ nq (ii) `nb N‡U (iii) ‡fŠZ I ivmvqwbK cwieZ©b N‡U wb‡Pi †KvbwU mwVK ?

(K) i I ii (L) ii I iii (M) i I iii (N) i , ii I iii