Assertion :The Joules-Thomson coefficient for an ideal gas is zero. Reason: There are no intermolecular attractive forces in an ideal gas.

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
Joule Thomson Effect-The phenomenon of change of temperature produced when a gas is made to expand adiabatically from a region of high pressure through a region of extremely low pressure through a small jet.
The effect is zero for an ideal gas in which van der Waal's forces of attraction are negligible and there is no expenditure of energy in overcoming these forces of reaction.
Hence option A is the right answer.

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