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Chemistry · PYQ NEET UG 2025

हिन्दी

The correct order of decreasing basic strength of the given amines is :

  1. N-methylaniline > benzenamine > ethanamine > N-ethylethanamine
  2. N-ethylethanamine > ethanamine > benzenamine > N-methylaniline
  3. N-ethylethanamine > ethanamine > N-methylaniline > benzenamine
  4. benzenamine > ethanamine > N-methylaniline > N-ethylethanamine

Correct answer · Option 3

N-ethylethanamine > ethanamine > N-methylaniline > benzenamine

Explanation

Secondary aliphatic amines are most basic due to +I effect and solvation, followed by primary aliphatic amines, then N-methylaniline, and least is benzenamine (aniline) due to resonance delocalization of lone pair.

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