Question

The test to distinguish primary, secondary and tertiary amines is:

• A. Carbylamine reaction
• B. Sandmeyer's reaction
• C. $C_6{H}_{5}S{O}_{2}Cl$
• D. Mustard oil test

Answer 1

The correct option is C $C_6{H}_{5}S{O}_{2}Cl$

The test to distinguish primary, secondary and tertiary amines is $C_6{H}_{5}S{O}_{2}Cl$ (benzene sulphonyl chloride). It is Hinsberg's test.
Nowadays, p-toluene sulphonyl chloride is used in presence of benzene sulphonyl chloride.