All form ideal solution except

$\mathrm{C}_{6} \mathrm{H}_{6}$ and $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{3}$
$\mathrm{C}_{2} \mathrm{H}_{6}$ and $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{I}$
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{Cl}$ and $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{Br}$
$\mathrm{C}_{2} \mathrm{H}_{5}$ I and $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$.

Solution

$\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{I}$ and $\mathrm{C}_{2} \mathrm{H}_{5}$ OH form non-ideal solution.

Asked in: JEE-TOPICTESTS-CHEMISTRY