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Question 780008
JEE Chemistry · Hard

Alcohols, Phenols and Ethers: JEE Main MCQ

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JEE MainHardQuestion 780008

Question

The correct order of boiling points is:
  1. A
    n-butanol > diethyl ether > butane
    Correct
  2. B
    Diethyl ether > n-butanol > butane
  3. C
    Butane > diethyl ether > n-butanol
  4. D
    All equal

Correct answer

n-butanol > diethyl ether > butane

Explanation

Alcohols have high boiling points due to H-bonding (n-BuOH bp = 117°C). Ethers have dipole-dipole interactions but no H-H bonding (Et₂O bp = 34.6°C). Alkanes have only London forces (butane bp = −1°C). Order: alcohol > ether > alkane.

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