c
The vapour pressure of mixture \((=600\; \mathrm{mm} \;\mathrm{Hg}\) ) is greater than the individual vapour pressure of its constituents (Vapour pressure of \(\mathrm{CS}_{2}=512\; \mathrm{mm}\; Hg\), acetone \(=344 \;\mathrm{mm}\; Hg\) ). Hence, the solution formed shows positive deviation

from Raoult's law.

\(\Rightarrow(1) \Delta_{\mathrm{sol}} \mathrm{H}>0\)

\((2)\) Raoult's law is not obeyed

(3) \(\Delta_{\text {sol. }}\) Volume \(>0\)

(4) \(\mathrm{CS}_{2}\) and Acetone are less attracted to each ether than to themselves.