Carbylamine test is performed in alc . ` KOH` by heating a mixture of :

Options

A. Chloroform and silver powder
B. Trihalogentaded methane and a primary amine
C. An alkyl halide and a primary amine
D. An alkyl cyanide and a primary amine

Answer

`b`

Explanation

Carbylamine test is given by `1^(@)` amine with `CHCl_(3) + KOH`
`RNH_(2) + CHCl_(3) + KOH rarr underset("Isocyanide")(R overset(o+)(N) -= overset(o-)(C)`
It gives an offensicve smell of isovyanide.
Mehcanism proceeds via carbene.
`(:C Cl_(2))` or `(:CX_(2))` or `(:CXX^(1))`
(`XX^(1) implies` Two different halogens)