Question

what is oxidation and reduction reaction?

Answer 1

gain of oxygen and lose of hydrogen is called oxidation.
gain of hydrogen and lose of oxygen is called reduction.

Answer 2

hey friend here is your answer
Oxidation is any chemical reaction that involves the moving of electrons. ... When iron reacts with oxygen it forms a chemical called rust because it has been oxidized (
The iron has lost some electrons.) and the oxygen has been reduced (The oxygen has gained some electrons.). Oxidation is the opposite of reduction.
And reduction reaction means

. A half-reaction in which a chemical species decreases its oxidation number, usually by gaining electrons. The other half of thereaction involves oxidation, in which electrons are lost. Together, reductionand oxidation form redox reactions(reduction-oxidation =redox