Assertion: The overall rate of a reversible reaction may decrease with the increase in temperature.
Reason: When the activation energy of a forward reaction is less than that of its backward reaction, then the increase in the rate of the backward reaction is more than that of the forward reaction on increasing the temperature.

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

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Both Assertion and Reason are true but Reason is not the correct explanation of Assertion

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Assertion is true but Reason is false

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Assertion is false but Reason is true

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Both Assertion and Reason are false

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Solution

The correct option is D Both Assertion and Reason are true and Reason is the correct explanation of Assertion
The overall rate of a reversible reaction may decrease with the increase in temperature.
When the activation energy of a forward reaction is less than that of its backward reaction, then the increase in the rate of the backward reaction is more than that of the forward reaction on increasing the temperature.

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