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NEET Chemistry QUESTION #1100
Question 1
The correct order of decreasing basic strength of amines:
  • N-ethylethanamine \(>\) ethanamine \(>\) N-methylaniline \(>\) benzenamine✔️
  • benzenamine \(>\) ethanamine \(>\) N-methylaniline \(>\) N-ethylethanamine
  • N-methylaniline \(>\) benzenamine \(>\) ethanamine \(>\) N-ethylethanamine
  • N-ethylethanamine \(>\) ethanamine \(>\) benzenamine \(>\) N-methylaniline
Correct Answer Explanation
Basic strength: aliphatic \(>\) aromatic amines. Among aliphatic: secondary \(>\) primary due to +I effect. N-ethylethanamine (diethylamine) \(>\) ethanamine (ethylamine). Aromatic amines much weaker: N-methylaniline \(>\) aniline (benzenamine) due to partial +I from methyl. Order: N-ethylethanamine \(>\) ethanamine \(>\) N-methylaniline \(>\) benzenamine.