# Relative lowering of vapour pressure is directly proportional to

$\begin{array}{1 1}(a)\;\text{molecular weight of solute}\\(b)\;\text{mole fraction of solution}\\(c)\;\text{molecular weight of solvent}\\(d)\;\text{mole fraction of solute}\end{array}$

Relative lowering of vapour pressure is directly proportional to mole fraction of solute
Hence (d) is the correct answer.