Which of the following liquid mixtures shows a positive deviation from Raoult's law?

Explain non-ideal solutions and the occurrence of positive and negative deviations in non-ideal solutions.

$A$ solution of two miscible liquids showing negative deviation from Raoult's law will have :

Which one of the following is a non-ideal solution?

Assertion $A$: For an ideal solution formed by mixing liquids $P$ and $Q$, $\Delta_{mix} H = 0$ and $\Delta_{mix} V = 0$.
Reason $R$: No interactions occur between $P$ and $Q$.
In the light of the above statements, choose the most appropriate answer from the options given below:

$A$ mixture of benzene and toluene forms