$A$ solution that obeys Raoult's law is

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.

For an ideal solution,the correct option is

Which of the following liquid pairs does not show contraction in volume on mixing?

Identify the mixture that shows positive deviations from Raoult's Law.

Which of the following will form an ideal solution?