Question

Which of the following ketones will not respond to iodoform test?

• A. Methyl isopropyl ketone
• B. Ethyl isopropyl ketone
• C. Dimethyl ketone
• D. 2-hexanone

Answer 1

Answer: (B)

Ethyl isopropyl ketone

Answer 2

Ethyl isopropyl ketone will not respond to iodoform test as it lacks methyl keto group ( $CH _{3}- \underset{\overset{||}{O}}{C} -$ group $) .$
All the ketones except ethyl isopropyl ketone gives iodoform test as they contain methyl keto group.