Question

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.

Answer 1

Answer:

I think the answer should be ( A )

Answer 2

Answer:

i think 4 answer

Explanation:

a is false and r is true