JEE Main 2025 · 2 April · morning · Single correct · +4 / −1

The correct order of basic nature in aqueous solution for the bases
NH₃,H₂ N-NH₂,CH₃CH₂NH₂,(CH₃CH₂)₂NH and (CH₃CH₂)₃ N is :

  1. (a) NH₃<H₂ N-NH₂<(CH₃CH₂)₃ N<CH₃CH₂NH₂<(CH₃CH₂)₂NH
  2. (b) H₂ N-NH₂<NH₃<(CH₃CH₂)₃ N<CH₃CH₂NH₂<(CH₃CH₂)₂NH
  3. (c) NH₂-NH₂<NH₃<CH₃CH₂NH₂<(CH₃CH₂)₃ N<(CH₃CH₂)₂NH
  4. (d) NH₃<H₂ N-NH₂<CH₃CH₂NH₂<(CH₃CH₂)₂NH<(CH₃CH₂)₃ N
Answer and solution

Answer (c) NH₂-NH₂<NH₃<CH₃CH₂NH₂<(CH₃CH₂)₃ N<(CH₃CH₂)₂NH

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Asked about 170 times in JEE Main since 2020. This question is from 2025.