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Assertion(A): When calcium carbonate is heated , it decomposes to give calcium oxide and carbon dioxide. Reason(R): The decomposition reaction takes place on application of heat, therefore, its an Endothermic reaction. 1)Both A and R are correct and R is the correct explanation of A. 2)Both A and R are correct but R is not the correct explanation of A. 3)A is true but R is false. 4)A is false and R is true.

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I THINK the ANSWER should be ( A )



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