Name the type of chemical reaction represented by the following equations :
(a) `CaCO_(3)(s)overset("heat")to CaO (s) + CO_(2)(g)`
(b) `CaO(s) + H_(2)O(l) overset("heat")to Ca(OH)_(2) (aq)`
(c) `Zn(s) + H_(2)SO_(4)(aq) to ZnSO_(4) (aq) + H_(2)(g)`

Explanation

(a) Decomposition reaction
(b) Combination reaction
(c) Displacement reaction.