Identify the reducing agent in the following reactions
(a) 4NH3 + 5O2 -> 4NO + 6H2O Ans. Ammonia (NH3)
(b) H2O + F2 -> HF + HOF Ans. Fluorine
(c) Fe2O3 + 3CO ->2Fe + 3CO2 Ans. Carbon monoxide (CO)
(d) 2H2 + O2 -> 2H2O Ans. Hydrogen
