Question

Assertion(A): Calcium carbonate on heating breaks down into calcium metal and oxygen gas.
Reason(R): Heating of CaCO3 is an example for thermal decomposition
i) Both A and R are true and R is correct explanation of the assertion.
ii) Both A and R true but R is not the correct explanation of the assertion.
iii) A is true but R is false.
iv) A is false but R is true

Answer 1

Answer:

It will be iv) A is false but R is true.

Answer 2

Answer:

iv) A is false but R is true

because as we heat calcium carbonate the product cao and co2 formed