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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3nc034

Which of the following are weaker bases than aniline?

  1. A4-methylaniline
  2. BN-methylaniline,
  3. Cdiphenylamine,
  4. D4-nitroaniline

Answer: C, D

Diphenylamine has the lone pair shared with two rings, and 4-nitroaniline has an electron-withdrawing group in para conjugation, so both are weaker than aniline. N-Methylaniline has a donating methyl group on nitrogen and is slightly stronger than aniline, and 4-methylaniline is also stronger because of the +I effect of .
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