Q26 / 150 · MHT CET 2024 (09 May Shift 2) · Chemistry

Which isomer of $\mathrm{C}_4 \mathrm{H}_9 \mathrm{OH}$ has lower boiling point?

  • A
    n-Butyl alcohol
  • B
    Isobutyl alcohol
  • C
    Sec-Butyl alcohol
  • Correct answer
    D
    tert-Butyl alcohol

Solution

Boiling point decreases with an increase in branching. Amongst all the isomers of $\mathrm{C}_4 \mathrm{H}_9 \mathrm{OH}$, tert-Butyl alcohol has the maximum branching and hence, it has the lowest boiling point.

Hence, the correct answer is option: 'D'.

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