Question

an
organic compound gives iodoform test and also gives positive test with tollens reagent the compound is

Answer 1

The correct answer should be - Ethanal.

Aldehydes are organic compounds which test positive for the Tollen's reagent test. Also, the hydrogen group of an aldehyde reacts to give positive results in the triiodomethane (iodoform) reaction.

Ethanal (CH₃CHO) is the one and only aldehyde that forms a pale yellow precipitate when it undergoes the triiodomethane (iodoform) reaction.

In Tollen's test, 2,4-dinitrophenylhydrazine, also known as 2,4-DNPH or as 2,4-DNP is used as a reagent. This reagent identifies the carbonyl group that is present in aldehydes. Then the Tollen's reagent which is a solution made up of silver nitrate and ammonia is used to distinguish in between the aldehydes and the ketones. The aldehydes give a positive silver mirror test.