Assertion :If pressure of an ideal gas is doubled and volume is halved, then its internal energy will remain unchanged. Reason: Internal energy of an ideal gas is a function of temperature only.

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 B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Internal energy of a gas is a function of temp only.
If pressure of an ideal gas is doubled and volume is halved, then its internal energy will remain unchanged.
$P^{'} V^{'} = 2 P \times \frac{V}{2} = P V = n R T$
$∴$ temp does not change.
Both the statements are correct, but reason is not the correct explanation of assertion.

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