Aldehyde And Ketone

Primary alcohols are very easily oxidised to aldehydes, which are oxidised to acids with same number of C-atoms.

Secondary alcohols are very easily oxidised to ketones, which are oxidised to acids with same number of C-atoms.

Secondary alcohols are easily oxidised to ketones, which are oxidised to acids with lesser number of \(\mathrm{C}\)-atoms.

Secondary and tertiary alcohols on oxidation form acids with lesser number of C-atoms.