Q28 / 180 · JIPMER 2016 · Chemistry

The pair of boiling point and compound are given as, Figure Which will show lowest vapour pressure at room temperature?

  • A
    $\mathrm{C}_6 \mathrm{H}_6$
  • B
    $\mathrm{CH}_3 \mathrm{OH}$
  • Correct answer
    C
    $\mathrm{C}_6 \mathrm{H}_5 \mathrm{NO}_2$
  • D
    $\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2$

Solution

As boiling point is inversely proportional to vapour pressure. Hence, nitrobenzene having bp $212^{\circ} \mathrm{C}$ will show lowest vapour pressure at room temperature.

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

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