Assertion :Specific heat of any substance remains constant at all temperatures. Reason: It is given by $S = \frac{1}{m} . \frac{d Q}{d T}$

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 D Assertion is incorrect but Reason is correct
Specific heat is the heat required to raise 1gram of a substance by $1^{\circ} C$ .So, Reason is correct.
Specific heat of a substance is a function of temperature and cannot be constant for all temperatures. So, Assertion is incorrect.
Hence, Option D is correct.

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