JEE Advanced levelSingle correct optionDifficulty 3 of 3nc049
An amine of formula CX3HX9N gives a solid with benzenesulfonyl chloride and aqueous KOH that does not dissolve in excess alkali, and gives a yellow oil with NaNOX2/HCl. The amine is:
AN,N-dimethylmethanamine, (CHX3)X3N
BN-methylethanamine, CHX3NHCHX2CHX3
Cpropan-2-amine
Dpropan-1-amine
Answer: B
An alkali-insoluble sulfonamide shows a secondary amine, as does the yellow oil of N-nitrosoamine. The isomers of CX3HX9N are two primary amines, one secondary amine and one tertiary amine. The only secondary one is CHX3NHCHX2CHX3.