JEE Main Chemistry question

Statement 1: On adding NaCl to water, its vapour pressure increases. Statement 2: Addition of a non-volatile solute decreases the vapour pressure.

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is TrueCorrect

Answer: (D)

Solution

Adding a non-volatile solute such as NaCl to water lowers (not increases) the vapour pressure of the water, by Raoult's law; Statement 1 is false.

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Question ID VK-143225