CBSE Class 12 Chemistry 2016 Delhi Set 1 Solved Paper

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Question : 19
Total: 26
Write the structures of A,B and C in the following :
(a) C6H5−CONH2
Br2∕aq⋅KOH
───────▸
A
NaNO2+HCl
───────▸
0−5∘
B
KI
─────▸
C
.
(b) CH3−Cl‌ ‌
‌ KCN ‌
─────▸
‌A
‌
‌
LiAIH4
─────▸
B
CHCl3+‌ alc.KOH ‌
────────▸
C
.
Solution:  
(a) C6H5−CONH2
Br2∕aq⋅KOH
───────▸
C6H5NH2[A]
NaNO2+HCl
───────▸
C6H5N2+‌Cl−[B]
 
KI
─────▸
C6H5I[C]
.
(b) CH3−Cl‌ ‌
‌ KCN ‌
─────▸
‌CH3‌CN[A]
‌
‌
LiAIH4
─────▸
CH3CH2NH2[B]
CHCl3+‌ KOH ‌
────────▸
Δ
‌CH3CH2‌NC[C]
.
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