Question

A nauseating smell in the carbylamine test for primary amines is due to the formation of

• A. Isocyanide
• B. Chloroform
• C. Cyanide
• D. DDT

Answer 1

The correct option is A Isocyanide

A test for primary amines by reaction with an alcoholic solution of potassium hydroxide and trichlormethane (or chloroform) is as follows:
$RN{H}_2+3KOH+CHC{l}_3\to RNC+3KCl+3H_{2}O$
The isocyanide $RNC$ is recognized by its unpleasant smell. This reaction of primary amines is called the carbylamine reaction.
Hence, (a) is the correct option.