(i) This reaction is a type of combination reaction in which reactants combine to form a single product.
(ii) This reaction is a type of displacement type of reaction in which a reactive reactant displaces the less reactive element from the compound. In the above reaction reactant A displaces B from the compound BC to form a new compound AC.
(iii) This reaction is a decomposition reaction in which compound A gets dissociated or broken down to form simple products B and C.
(iv) Double Displacement Reaction is a type of chemical reaction in which anions and cations of the reacting compounds exchange their positions to form different compounds. This reaction is a double displacement type of reaction.