Question

Which one of the following is not expected to undergo iodoform reaction?

• A. Propan-2-ol
• B. 1-Phenylethanol
• C. 2-Butanol
• D. Ethanol
• E. Diphenyl methanol

Answer 1

Answer: (E)

Compounds having methyl ketone $\left(-COC{H}_3\right)$ group or $2^{\circ }$ alcohol group



or ethanol when treated with iodine in the presence of alkali gives yellow coloured iodoform and this reaction is called iodoform test.

The structures of the given compounds are



Thus, among the given diphenyl methanol does not give iodoform reaction.