Primary alcohols on oxidation with a strong oxidising agent like potassium permanganate give carboxylic acid.
Oxidation of alcohols
The oxidation of alcohols is an important reaction in organic chemistry. Primary alcohols can be oxidised to form aldehydes and carboxylic acids; secondary alcohols can be oxidised to give ketones. Tertiary alcohols, in contrast, cannot be oxidised without breaking the molecule’s C–C bonds. It is a strong oxidant, and it oxidises the alcohol as far as possible without breaking carbon-carbon bonds.