Hinsberg’s reagent is used to distinguish between primary, secondary, and tertiary amines. The chemical name of the Hinsberg’s reagent is
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Benzenesulphonyl chloride.
Hinsberg’s reagent is benzenesulphonyl chloride, \( \ce{C6H5SO2Cl} \). It is used to distinguish primary, secondary and tertiary amines.
NCERT (2026-27 edition):
Reaction with Arylsulphonyl Chloride
