Question

Which of the following is/are can be distinguished using Iodoform test?

• A. Methanol and propan-2-ol
• B. Acetaldehyde and methanal
• C. Acetone and diethyl ketone
• D. All of the above.

Answer 1

The correct option is D All of the above.

The iodoform reaction been used as a chemical test for the presence of a methyl ketone moiety.
Acetone and acetaldehyde have methyl ketone moiety thus give iodoform test while methanal and diethylketone donot have methyl ketone moiety hence they donot give iodoform test. Only those alcohols which contain $-CHOHC{H}_3$ group undergo haloform reaction.
Propan-2-ol give iodoform test because it has $-CHOHC{H}_3$ group while methanol don't have $-CHOHC{H}_3$ group hence it doesnot give iodoform test.
Hence option (d) is correct.