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JEE Advanced levelSingle correct optionDifficulty 3 of 3nc049

An amine of formula gives a solid with benzenesulfonyl chloride and aqueous that does not dissolve in excess alkali, and gives a yellow oil with . The amine is:

  1. AN,N-dimethylmethanamine,
  2. BN-methylethanamine,
  3. Cpropan-2-amine
  4. Dpropan-1-amine

Answer: B

An alkali-insoluble sulfonamide shows a secondary amine, as does the yellow oil of N-nitrosoamine. The isomers of are two primary amines, one secondary amine and one tertiary amine. The only secondary one is .
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