$A$ mixture of toluene and benzene boils at $100^{\circ} C$. Assuming ideal behaviour,the mole fraction of toluene in the mixture is closest to (Vapour pressures of pure toluene and pure benzene at $100^{\circ} C$ are $0.742 \ bar$ and $1.800 \ bar$,respectively. $1 \ atm = 1.013 \ bar$)

$A$ liquid mixture contains $10 \ moles$ of $A$ $(P_A^0 = 200 \ mm \ Hg)$ and $10 \ moles$ of $B$ $(P_B^0 = 100 \ mm \ Hg)$. The vapour pressure over the liquid mixture is $160 \ mm \ Hg$. Which statement is correct?

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

Consider the following statements about the solutions formed by mixing two liquids.
$A$. An ideal solution thus formed obeys Raoult's law throughout the composition range.
$B$. Mixture of chloroform and acetone shows negative deviation from Raoult's law.
$C$. Mixture of aniline and phenol shows positive deviation from Raoult's law.

Which of the following is not correct?

Which pair of liquids shows positive deviation from Raoult's law?