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 \[-N{{H}_{2}}\]group. [a] \[\underset{ethyl\text{ }amine}{\mathop{{{C}_{2}}{{H}_{5}}N{{H}_{2}}}}\,\] [b] \[\underset{methyl\text{ }amine}{\mathop{C{{H}_{3}}N{{H}_{2}}}}\,\] [c] \[\underset{dimethyl\text{ }amine}{\mathop{{{(C{{H}_{3}})}_{2}}NH}}\,\] [d] Hence, dimethyl amine, being a secondary amine, does not answer carbylamine reaction.