Q.

Statement 1: Freezing point of solvent is more than that of solution.Statement 2: When non-volatile solid is added to the solvent, its vapour pressure increases and become equal to solid solvent at the lower temperature.

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Both statements 1 and 2 are correct

Both statements 1 and 2 are incorrect

Statement 1 is correct statement 2 is incorrect

Statement 1 is incorrect statement 2 is correct

answer is C.

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Detailed Solution

At the free zing point, the solid phase of a substance is in dynamic equilibrium with its liquid phase. A solution will freeze, when its vapour pressure becomes equals to the vapour pressure of the pure solid solvent.When non-volatile solid is added to the solvent, its vapour pressure decreases and becomes equal to solid solvent at lower temperature.Freezing point of the solvent is more than that of solution.

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