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imvqb G·K¬zwmf mv‡Rkb
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 cøvRwgW + * cøvRwgW +* cøvRwgW * cøvRwgW + cøvRwgW + cøvRwgW  cøvRwgW + cøvRwgW +cøvRwgW + cøvRwgW +  cøvRwgW  cøvRwgW + cøvRwgW  +  cøvRwgW +* cøvRwgW + cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW + cøvRwgW + cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW + * cøvRwgW +*
0
2018-19 mv‡ji evQvBK…Z ¸iæZ¡c~Y© cÖkœ mgyn ( imvqb) 13. hw` dv‡ibnvBU †¯‥‡j †Kv‡bv cv‡Vi -40 F nq Z‡e
1. ‡KvbwU †n‡U‡ivmvBwK¬K ‡h․M bq? †mw›U‡MÖW †¯‥‡j KZ cvV †`Lv‡e?
Ans:(N) Ans:(L)
K. wcwiwWb L. _v‡qwdb K. 40 C L. -40 C
0
0
M. wdDivb N. b¨vc_wjb M. -80 C N. -42.5 F
0
0
2. ‣Re †h․‡Mi weï×Zv †KvbwUi gva¨‡g wbY©q Kiv nq? 14. ‡Kvb M¨vmwUi e¨vc‡bi nvi me‡P‡q †ewk?
Ans:(L) Ans:(M)
K. `nb L. Mjbv¼ wbY©q K. CO 0 L. O 2
M. mv›`ªZv wbY©q N. `ªve¨Zv wbY©q M. H 2 N. NH 3
3. wb‡Pi †KvbwU cÖvK„wZK Lv`¨ msiÿK? 0 -1
15. 0 C DòZvq 1.0 Pv‡c bvB‡Uªv‡Rb Gi NbZ¡ 14.01gl 1
Ans:(M)
GKB DòZvq Zvc 3 ¸b Ki‡j M¨vmwUi NbZ¡ KZ?
K. cvwb L. Pzb
M. †Zj N. gvwU -1 Ans:(K)
-1
4. wb‡¤œi †KvbwU jyBm GwmW? Ans:(KLM) K. 42.0gL L. 7.0gL
-1
-1
M. 14.0gL N. 28.0gL
K. SO 2 L. SO 3 M. CO 2 N. ZnO
16. wb‡Pi †Kvb †mjwU cwie‡k evÜe n‡e?
5. NaCl + H 2O wewµqvi Drcv`K †KvbwU?
Ans:(K)
Ans:(N) K. dz‡qj †mj L. †jW mÂvqK e¨vUvwi
K. NaOH L. HCI M. K¨vWwgqvg e¨vUvwi N. wjw_qvg Avqb e¨vUvwi
M. NaOH + HCI N. ‡Kv‡bvwUB bq
6. BDwiqv †_‡K †gjvgvBb ‣Zwi‡Z wb‡Pi †KvbwU AbyNUK wn‡m‡e KvR 17. dvi‡g‡›Uk‡bi gva¨‡g Kx Drcbœ nq?
K‡i? Ans:(K) Ans:(M)
K. TiO 2 L. V 2O 5 K. digvjwWnvBW L. digvwjb
M. Pt N. Ni M. B_vbj N. B_vi
7. wb‡Pi †Kvb mvj‡dU jeY cvwb‡Z A`ªeYxq?  cøvRwgW + * cøvRwgW +* cøvRwgW + * cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW + cøvRwgW +cøvRwgW + cøvRwgW +  cøvRwgW  cøvRwgW + cøvRwgW +  cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW + cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW +* cøvRwgW + 18. ‣ewk¦K DòZv e„w×‡Z †Kvb M¨v‡mi Ae`vb †ewk?  cøvRwgW + * cøvRwgW +* cøvRwgW + * cøvRwgW + cøvR
Ans:(L) Ans:(K)
K. Na 2SO 4 L. BaSO 4 K. CO 2 L. CH 4
M. Al 2(SO 4) 3 N. CuSO 4 M. CFC N. O 3
8. wb‡Pi †KvbwU cwjgvi? Ans:(N) 19. wb‡Pi †Kvb mgxKiYwU M¨v‡mi MwZZË¡ †_‡K D™¢~Z?
K. cvwb L. wPwb Ans:(K)
M. jeY N. KvV 3 R 2k
9. ‡KvbwU wcÖRvi‡fwUf? Ans:(N) K. C  L. PV 
M 3
K. Na 2SO 4 L. NaNO 3
M. CH 3COONa N. C 6H 5COONa M. V  8 R N. PV  1 mNC
2
10. wb‡Pi †KvbwU A¨vwj‡dwUK nvB‡WªvKve©b bq? M 2
Ans:(M) 20. 500 ml 15% NaCl `ªeY •Zwi Ki‡Z KZUzKz NaCl Gi
K. n-weD‡Ub L. 2-wg_vBj †cÖv‡cb cÖ‡qvRb n‡e? Ans:(L)
M. †ebwRb N. mvB‡K¬v‡n‡·b K. 15g L. 75g M. 30g N. 70g
11. Kqjvi `n‡bi d‡j Gi g‡a¨ Dcw¯
Z †Kvb ‡h․M ev®úiƒ‡c e¨vL¨vt 100ml `ªe‡Y NaCl Av‡Q 15 gm
evqy‡Z Qwo‡q c‡o? Ans:(K) 500ml `ªe‡Y NaCl Av‡Q (15×5) gm = 75 gm.
K. N 2 L. O 2 21. wb‡Pi †KvbU cvB‡ivGwmW? Ans:(N)
M. Pb N. H 2 K. HClO 4 L. H 3PO 4 M. H 2SO 4 N. H 2S 2O 7
-4
12. ‡Kvb Radioactive c`v‡_©i ÿq aªæe‡Ki gvb 3456×10 22. c„w_ex c„‡ôi Dc‡i †Kv‡bv evqygÛj bv _vK‡j GKwU w`e‡mi
-1
s n‡j, Aa©Rxeb KZ? Ans:(M) mg‡qi e¨vwß- Ans:(M)
K. 5s L. 4s K. n«vm cv‡e L. e„w× cv‡e
M. 2s N. 8ms M. GKB _vK‡e N. AvenvIqvi Dci wbf©i Ki‡e

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