Answer and Explanation: The answer is (C) 2-hexanone. The iodoform test is a qualitative chemical test that confirms the presence of a methyl ketone in the structure.
The compound having α-hydrogen will give iodoform test. Ethyl alcohol and secondary alcohols also give positive iodoform test because by the action of halogens in alkaline medium, they are oxidised to acetaldehyde and methyl ketones respectively.
The iodoform test reveals the presence of an aldehyde or ketone in which a methyl group is one of the groups immediately connected to the carbonyl carbon. Such a ketone is referred to as methyl ketone.
Iodoform test for alcohol Iodoform Test can be used to identify the presence of carbonyl compounds group in alcohols. The reaction of Iodine along with the base with methyl ketones results in the appearance of a very pale yellow precipitate of triiodomethane (previously known as iodoform). CHI3.
Does not give iodoform test because it has two ethyl groups attached to carbonyl groups. An aldehyde or ketone which has a methyl group attached to a carbonyl group will give a positive test.
All the ketones except ethyl isopropyl ketone gives iodoform test as they contain methyl keto group.
Diethyl ketone is not any carbonyl or alcohol so it will not give an iodoform test.