Assertion :Suppose some reaction takes place in a container which has a movable side,then if it is known that for that particular reaction its entropy change is negative then we can necessarily say that that reaction is not possible. Reason: For any process to undergo,its entropy change must be positive.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
If in a system , a process taken place and change in entropy is negative it does not mean the process can't be possible infect net change in entropy can't be negative i e.system & surroundings must have positive change until it have no negative not change in entropy ; only a system or surroundings can have negative in entropy.
Hence , the answer is D.

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