MHT CET Chemistry question

When a solute is dissolved in a solvent

(A)Vapour pressure of the solvent is increased
(B)Freezing point of the solution becomes more than that of solvent
(C)Boiling point of the solution becomes more than that of solvent
(D)Vapour pressure of the solvent is decreasedCorrect

Answer: (D)

Solution

Dissolving a solute reduces the mole fraction of the solvent, so the vapour pressure of the solvent decreases (Raoult's law) for any solute; the freezing point is lowered,

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Question ID VK-060742