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JEE Main levelSingle correct optionDifficulty 2 of 3nc043

Ethanamine is treated with $NaNO X_{2}$ and dilute $HCl$ at 273-278 K. The observation and main organic product are:

Aformation of a green solid, 4-nitrosoethanamine
Bno gas, formation of stable ethanediazonium chloride
Cformation of a yellow oil, N-nitrosoethanamine
Devolution of $N X_{2}$ gas and formation of ethanol

Answer: D

Aliphatic diazonium salts are unstable even at low temperature and decompose with loss of

N X_{2}

. The carbocation is captured by water, giving mainly ethanol. Only aromatic primary amines give stable diazonium salts at 273-278 K.

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