question_answer

Which amine of the following will not answer carbylamine reaction?

A) Ethyl amine       

B) Methyl amine

C) Dimethyl amine               

D) Phenyl amine

Correct Answer: C

Solution :

Carbylamine test is given by aliphatic as well as aromatic primary amines, ie, amines having \[-\text{N}{{\text{H}}_{\text{2}}}\]group. (a) \[\underset{\text{ethyl}\,\text{amine}}{\mathop{{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}\text{N}{{\text{H}}_{\text{2}}}}}\,\]                                (b) \[\underset{\text{methyl}\,\text{amine}}{\mathop{\text{C}{{\text{H}}_{3}}\text{N}{{\text{H}}_{\text{2}}}}}\,\] (c) \[\underset{\text{dimethyl}\,\text{ }\,\text{amine}}{\mathop{{{\text{(C}{{\text{H}}_{\text{3}}}\text{)}}_{\text{2}}}\text{NH}}}\,\]                                (d)