In the chemical reaction, $C{H}_{3}C{H}_{2}N{H}_2 +CHC{l}_3 + 3KOH\to \left(A\right) + \left(B\right) + 3H_{2}O$. (A) and (B) are

Given data : It is given to identify  A and B .

Explanation

The substances (A) and (B) are, respectively, $C_2{H}_{5}NC \& 3KCl$.

The reaction is called the "carbylamine test" or "isocyanide test," and it involves heating aliphatic or aromatic primary amines with chloroform and alcohol potassium hydroxide to produce obnoxious-smelling alkyl isocyanides or carbylamines. This test is not performed on secondary or tertiary amines.

The chemical reaction is as follows.

$C{H}_{3}C{H}_{2}N{H}_2 +CHC{l}_3 + 3KOH\to \underset{A}{C{H}_{3}C{H}_{2}NC}+ \underset{B}{3KCl} + 3H_{2}O$

The correct choice is (A) $C_2{H}_{5}NC \& 3KCl$.