Practice mode Alcohols and Phenols

Which alcohol gives a yellow precipitate of triiodomethane when warmed with iodine and aqueous NaOH?

Correct answer B. Propan-2-ol

Explanation

The iodoform test is positive for alcohols containing the CH₃CH(OH)– group, which is oxidised to CH₃CO–. Propan-2-ol has this group; methanol, propan-1-ol and the tertiary alcohol do not.

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