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Read the two statements. Statement-1: The mass fraction of a solute in a solution is always greater than its mole fraction. Statement-2: In an aqueous solution of ethanol, the mole fraction of the solvent (water) must be greater than that of the solute. Choose the correct option.

1. Statement-1 is true, Statement-2 is true, and Statement-2 correctly explains Statement-1.
2. Statement-1 is true, Statement-2 is true, but Statement-2 does NOT correctly explain Statement-1.
3. Statement-1 is true, Statement-2 is false.
4. Statement-1 is false, Statement-2 is true.

Correct answer: Statement-1 is false, Statement-2 is true.

Solution

Mass fraction is not always larger than mole fraction (it depends on relative molar masses), so Statement-1 is false; but in any aqueous solution water (solvent) is in excess, making Statement-2 true.

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