Assertion :When ice melts, work is done by atmosphere on (ice + water) system. Reason: On melting of ice volume decreases.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
On melting of ice, volume decreases. This is a memory based fact.
Work done is $w = \int P d V$
Hence, work is done on the system.
Hence both assertion and reason are correct, and reason is the correct explanation of the assertion. Hence option A is correct.

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