Consider the chemical equations given below and answer the questions which follow :
(a) `CuO + H_(2) overset("heat")to Cu + H_(2)O`.
(b) `ZnO + C overset("heat")to Zn + CO.`
(i) Name the substances that are respectively oxidised and reduced.
(ii) Identify the reducing agents in each case.

Explanation

(i) `H_(2)` is oxidised and CuO is reduced in equation (a) C is oxidised and ZnO is reduced in equation (b).
(ii) `H_(2)` is reducing agent in equation (a) C is reducing agent in equation (b).