Question

Which of the following given compounds can exhibit tautomerism ?


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• A. I and III
• B. I and II
• C. I , II and III
• D. II and III

Answer 1

The correct option is C I , II and III

For a compound to exhibit tautomerism, presence of $\alpha$-hydrogen is neccessary at its $s{p}^3$ hybridised ⍺-C atom. All the three compounds I ,II and III can exhibit tautomerism.