Question:

The increasing order of boiling point of the following amines is

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More N–H bonds → stronger hydrogen bonding → higher boiling point.
Updated On: Apr 24, 2026
  • $C_2H_5N(CH_3)_2<(C_2H_5)_2NH<C_4H_9NH_2$
  • $C_4H_9NH_2<C_2H_5N(CH_3)_2<(C_2H_5)_2NH$
  • $C_2H_5NH(CH_3)<C_4H_9NH_2<(C_2H_5)_2NH$
  • $(C_2H_5)_2NH<C_4H_9NH_2<C_2H_5N(CH_3)_2$
  • $(C_2H_5)_2NH<C_2H_5N(CH_3)_2<C_4H_9NH_2$
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The Correct Option is A

Solution and Explanation

Concept:
• Boiling point depends on hydrogen bonding

Step 1:
Order of H-bonding
Primary > Secondary > Tertiary

Step 2:
Arrange
Tertiary < Secondary < Primary Final Conclusion:
Option (A)
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