A) \[RN{{H}_{2}}\]
B) \[{{R}_{2}}NH\]
C) \[{{R}_{4}}{{N}^{+}}C{{l}^{-}}\]
D) \[{{R}_{3}}N\]
Correct Answer: A
Solution :
Only primary amines, when treated with chloroform and alkali (KOH), gives isocyanide (RNC), the bad smelling compound. This reaction is called carbylamine reaction. Among the given amines, \[\text{RN}{{\text{H}}_{\text{2}}}\]is a primary amine, so forms RNC when treated with \[\text{CHC}{{\text{l}}_{\text{3}}}\] and KOH. \[RN{{H}_{2}}+CHC{{l}_{3}}+3KOH\] \[\xrightarrow{{}}\underset{\begin{smallmatrix} alkyl\,iso- \\ cyanide \end{smallmatrix}}{\mathop{RNC}}\,+3\,KCl+3{{H}_{2}}O\]
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