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The reagent that distinguishes 1° aliphatic amine from 2° amine is:

  1. (a) Bromine water
  2. (b) Hinsberg reagent (benzenesulfonyl chloride)
  3. (c) FeCl₃
  4. (d) NaOH/I₂
Answer and solution

Answer (b) Hinsberg reagent (benzenesulfonyl chloride)

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