Question

Provide two written definitions of an oxidation-reduction reaction and for each definition tell which reactant is reduced and which is oxidized. Then tell which of the two definitions is the most comprehensive.

Answer 1

The addition of oxygen and removal of hydrogen is known as oxidation and addition of hydrogen and removal of oxygen is known as reduction.

Or,

The addition of non metal and removal of metal is known as oxidation and addition of metal and removal of non metal is known as hydrogen