Aldehydes and ketones, having atleast one methyl group linked to the carbonyl carbon atom (methyl ketones), are oxidized by sodium hypohalite to sodium salts of corresponding carboxylic acids having one carbon atom less than that of carbonyl compound is converted to haloform. This oxidation does not affect a carbon-carbon double bond, if present in a molecule.

Match List-I with List-II

List-I	List-II
	(I) Hydrazones
	(II) oximes
	(III) Ethane
	(IV) Phenyl hydrazones

Choose the correct answer from the options given below:

(A)-(II), (B)-(I), (C)-(IV), (D)-(III)

The correct answer is : (2) (A)-(II), (B)-(I), (C)-(IV), (D)-(III).

When an aldehyde or ketone reacts with hydroxylamine \((NH_2OH)\) in a weakly acidic medium, it produces oxime and eliminates water molecules.

Aldehydes and ketones can be converted to a hydrazone derivative by reaction with hydrazine \((H_2NNH_2)\).

The nitrogen atom of phenyl hydrazine acts as a nucleophile which attacks at the electrophilic carbon of acetaldehyde and remove water to give acetaldehyde phenylhydrazone.

Ethanal undergoes a reduction in the presence of \(Zn-Hg/HCl\) to give ethane