Which of the following pairs does not form an ideal solution?

Two liquids $A$ and $B$ form an ideal solution at temperature $T \ K$. At $T \ K$,the vapour pressures of pure $A$ and $B$ are $55 \ kNm^{-2}$ and $15 \ kNm^{-2}$ respectively. What is the mole fraction of $A$ in the solution of $A$ and $B$ in equilibrium with a vapour in which the mole fraction of $A$ is $0.8$?

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

Which of the following will form an ideal solution?

$A$ solution that obeys Raoult's law is

$A$ liquid mixture is an ideal solution,if
$(I)$ It obeys ideal gas equation
$(II)$ It obeys Raoult's law at all concentrations
$(III)$ Solute - solute,solute - solvent and solvent - solvent interactions are similar