Which one of the following does NOT give an iodoform test?
Correct answer: A. CH3OH
- A. CH3OH
- B. CH3CH2OH
- C. CH3CHO
- D. CH3COCH3
Explanation
Iodoform ( in general haloform) reaction is given by ketones having methyl group attached to carbonyl carbon or secondary alcohols and secondary aldehdyes. Primary alcohols do not give iodoform test because they do not have any methyl group attached to carbonyl carbon. Hence, CH3OH does not give iodoform test.
Last updated
About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
Practise Alcohols and Phenols
535 free Alcohols and Phenols MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.