Which of the following compounds can exhibit tautomerism?
A
A, B, C, D
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B
B
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C
B, C, D
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D
D
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Solution
The correct option is A A, B, C, D Compounds having enolisable hydrogen at alpha carbon show tautomerism. (A), (B) and (C) has enolisable α−H. (D) is in enolic form which can tautomerise to keto form.