Assertion :Benzene (boiling point $353 K$ ) and methanol (boiling point $338 K$ ) are separated by simple distillation. Reason: Fractional distillation is used to separate two liquids from their mixture when their boiling points differ by $25 K$ or less.

Assertion and reason both are correct statements and reason is the correct explanation for assertion.

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Assertion and reason both are correct statements but the reason is not the correct explanation for assertion.

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Assertion is wrong statement but reason is correct statement.

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Assertion and reason both are wrong statements

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Solution

The correct option is C Assertion is wrong statement but reason is correct statement.
Benzene and methanol cannot be separated by simple distillation as the difference in their boiling points are less than 25 $K$ . Simple distillation is used when the difference in the boiling points is in the range 25-50 $K$ .

When the difference is less than 25 $K$ , fractional distillation is used.
Hence, the assertion is incorrect and the reason is correct.

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Assertion :Benzene (boiling point 353 K) and methanol (boiling point 338 K) are separated by simple distillation. Reason: Fractional distillation is used to separate two liquids from their mixture when their boiling points differ by 25 K or less.

Assertion :Benzene (boiling point $353 K$ ) and methanol (boiling point $338 K$ ) are separated by simple distillation. Reason: Fractional distillation is used to separate two liquids from their mixture when their boiling points differ by $25 K$ or less.