Assertion :A process of expansion of an ideal gas which is isothermal as well as adiabatic must be free-expansion process. Reason: A reversible isothermal process can also be adiabatic only at $T = 0$ and an irreversible isothermal process can also be adiabatic at $T \neq 0$

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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Assertion is incorrect but Reason is correct

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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
Both Assertion and Reason are correct (they are facts) but Reason is unrelated therefore is not the correct explanation for Assertion

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Assertion :A process of expansion of an ideal gas which is isothermal as well as adiabatic must be free-expansion process. Reason: A reversible isothermal process can also be adiabatic only at T=0 and an irreversible isothermal process can also be adiabatic at T≠0

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for AssertionBoth Assertion and Reason are correct (they are facts) but Reason is unrelated therefore is not the correct explanation for Assertion

Assertion :A process of expansion of an ideal gas which is isothermal as well as adiabatic must be free-expansion process. Reason: A reversible isothermal process can also be adiabatic only at $T = 0$ and an irreversible isothermal process can also be adiabatic at $T \neq 0$

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Both Assertion and Reason are correct (they are facts) but Reason is unrelated therefore is not the correct explanation for Assertion