(i) Addition of oxygen or removal of hydrogen or loss of electrons is known as oxidation.
(ii) Ethanol gets oxidised by alkaline potassium permangnate to form ethanoic acid.
(iii) The following equation will explain conversion of ethanol acid. `underset(("ethanol"))(CH_(3)-CH_(2))-OH underset(("alkaline "KMnO_(4)))overset([o])to underset(("ethanoic acid"))(CH_(3)-overset(O)overset(||)(C)-OH`
2 Hydrogen atoms are replaced by one Oxygen atom, therefore it is an oxidation reaction.
