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Given
Which of the given compounds can exhibit tautomerism?
Which of the given compounds can exhibit tautomerism?
A
I and II
B
I and III
C
II and III
D
I, II and III
Detailed Solution
Keto-enol tautomerism requires at least one $\alpha$-hydrogen next to the C=O group.
All three ketones have an $\alpha$-H on the other side of the carbonyl group, so I, II and III all exhibit tautomerism.
All three ketones have an $\alpha$-H on the other side of the carbonyl group, so I, II and III all exhibit tautomerism.