Question

To differentiate between pentan-2-one and pentan-3-one a test is carried out. Which of the following is the correct answer?

• A. Pentan-2-one will give silver mirror test
• B. Pentan-2-one will give iodoform test
• C. Pentan-3-one will give iodoform test
• D. None of these

Answer 1

The correct option is B Pentan-2-one will give iodoform test

Only methyl ketone group gives positive iodoform so compound pentan-2-one will give iodoform test and pentan-3-one will not give.

silver mirror is only valid for aldehyde group, not for ketone.