A) Relative lowering of vapour pressure is independent of the nature of the solute and the solvent
B) The vapour pressure is a colligative property
C) Vapour pressure of a solution is lower than the vapour pressure of the solvent
D) The relative lowering of vapour pressure is directly proportional to the original pressure
Correct Answer: D
Solution :
According to Raoults law, the relative lowering of vapour pressure of a dilute solution is equal to the mole fraction of the solute present in the solution, i.e., \[\frac{P-{{P}_{S}}}{P}=\frac{n}{n+N}\]
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