Home Chemistry Solution & Colligative Properties Lowering of Vapour Pressure The relative lowering of the vapour pressure…
Chemistry Solution & Colligative Properties Lowering of Vapour Pressure Single Correct MCQ
Published on: August 14, 2026

The relative lowering of the vapour pressure is equal to the ratio between the number of

A
Solute moleules and solvent molecules
B
Solute molecules and the total molecules in the solution
C
Solvent molecules and the total molecules in the solution
D
Solvent molecules and the total number of ions of the solute

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The correct answer is:
B

The relative lowering of the vapour pressure of dilute solution is equal to the mole fraction of the solute molecule present in the solution.

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