Question

Which of the following statement is correct?

• A. Ethanenitrile is hydrolysed by both in acidic or alkaline medium to give propanoic acid.
• B. Ethyl isocyanide on partial hydrolysis in acidic medium gives ethyl amine and methanoic acid.
• C. In the hydrolysis of carbylamine, electrophile and nucleophile add to the same $C$-atom.
• D. Ethyl bromide on reaction with potassium nitrite give nitro ethane as the major product.

Answer 1

Answer: (C)

Correct (1):
$\underset{\text{Ethane nitrile}}{CH _{3}- C \equiv N} \xrightarrow{ H _{3} O ^{\oplus}} \underset{\text{Ethanoic acid}}{CH _{3} COOH + NH _{3}}$
Correct (2):
$C _{2} H _{5} NC \xrightarrow[ H _{3} O ^{\oplus}]{\text { Partial }} \underset{ N \text {-Ethylmethanamide }}{ C _{2} H _{5}- NH - \overset{\underset{||}{O}}{C} - H }$
Correct (4):
$C _{2} H _{5} Br + KNO _{2} \longrightarrow \underset{\text{Ethyl nitrile}}{C _{2} H _{5}- O - N = O + KBr}$