Carboxylic acids are produced by the oxidation of _.

Explanation

Option A: primary alcohol gets oxidised to carboxylic acid when oxidising agents are added, such as potassium permanganate (KMnO4), in an acidic, alkaline or neutral medium. Option B:aldehydes are normally oxidized to carboxylic acids using potassium dichromate(VI) solution in the presence of dilute sulfuric acid. During the reaction, the potassium dichromate(VI) solution turns from orange to green.Option C: Ketones are generally oxidized under vigorous conditions, i.e.,strong oxidizing agents and at elevated temperatures. The oxidation of ketones involves carbon-carbon bond cleavage resulting in a mixture of carboxylic acids having lesser number of carbon atoms than the parent ketone.Option D: hence, both alcohols and aldehydes give carboxylic acids readily.