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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: A mixture contains benzoic acid and naphthalene. The pure benzoic acid can be separated out by the use of benzene. Reason R: Benzoic acid is soluble in hot water. In the light of the above statements, choose the most appropriate answer from the options given below. (1) Both A and R are true and R is the correct explanation of A. (2) Both A and R are true but R is NOT the correct explanation of A. (3) A is true but R is false. (4) A is false but R is true.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is NOT the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Correct answer: A is false but R is true.

Solution

Assertion A is incorrect because benzoic acid cannot be separated from naphthalene using benzene, as both are soluble in it. However, Reason R is correct since benzoic acid is indeed soluble in hot water, which is unrelated to the separation process described in A.

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