Topic : ideal and non-ideal solutions

A gas at 300 K and 10 bar has molar volume 10% more than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is

A real gas approaches ideal behaviour at

Which solution shows negative deviation from Raoult's law?

5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are 63 torr and 78 torr respectively. Which of the following is true regarding the described solution?

Select the incorrect option for an ideal solution obtained by mixing two components.