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JEE Main 2026 Chemistry question

ChemistryAldehydes, Ketones and Carboxylic AcidsJEE Main 2026

An organic compound "P" of molecular formula gives positive Iodoform test but negative Tollen's test. When "P" is treated with dilute acid, it produces "Q". "Q" gives positive Tollen's test and also iodoform test. The structure of "P" is :

Answer: (2)

Solution

P is a dimethyl acetal of a methyl ketone-aldehyde; hydrolysis (Q) reveals an aldehyde group

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Question ID VK-000981