For an ideal binary liquid mixture,which of the following conditions is true?

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:

For an ideal solution of two components $A$ and $B$,which of the following is true?

Which of the following pairs of liquids shows a positive deviation from Raoult's law?

Explain the terms ideal and non-ideal solutions in the light of forces of interactions operating between molecules in liquid solutions.

The boiling point of an equimolar ideal solution of hexane $(C_6H_{14})$ and heptane $(C_7H_{16})$ is $80 \ ^oC$. What is the boiling point of a mixture of hexane and heptane containing equal mass of both? The boiling points of pure hexane and pure heptane are $69 \ ^oC$ and $98 \ ^oC$ respectively.