Carbyl amine test is performed in ale.$\mathrm{KOH}$ by heating a mixture of 

$$\begin{gathered} \underset{1^{\circ }\text{ amine }}{\mathrm{R}-{\mathrm{NH}}_2}+{\mathrm{CHCl}}_3+3\mathrm{KOH}\text{ (alc.) }⟶\underset{ }{\mathrm{R}-\mathrm{NC}+3\mathrm{KCl}+3{\mathrm{H}}_2\mathrm{O}} \\ \mathrm{trihaloginated} \mathrm{methane} \end{gathered}$$

Carbyl amine test