NEET Chemistry Enthalpy Assertion Reason Question
Assertion (A): The decomposition of CaCO3(s) is an endothermic process. | Reason (R): The value of ΔrH for the decomposition of CaCO3(s) is positive.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
The decomposition of CaCO3(s) requires the input of heat, making it endothermic, which is reflected by the positive ΔrH value, as indicated in the NCERT context.
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