If degree of dissociation of ${\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3$ is $25\%$ in a solvent, then

Vapour phase diagram for a solution is given below if dotted line represents deviation

Correct observation for this solution

Vapour pressure diagram of some liquids potted against temperature are show below

Most volatile liquid

Two solutions marked as$\mathrm{A}$ and $\mathrm{B}$are separated through semipermeable membrane as below. The phenomenon undergoing

Correct observation

The phenomenon taking place

Which is having highet elevation in boiling point?

Freezing point of solution is marked as