When ammonium, potassium and calcium carbonates are each separately heated

A.

none of them will decompose

B.

each of them will decompose to give carbondioxide and the respective oxide

C.

ammonium carbonate and potassium carbonate will not decompose

D.

only ammonium carbonate and the respective oxide

E.

ammonium carbonate will decompose to give carbondioxide, water and ammonia

Correct answer is E

Solid ammonium carbonate decomposes as it is heated.

 (NH4)2CO3 → 2 NH3 + CO2 + H2O