Question:

Keto-enol tautomerism is observed in:

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In keto-enol tautomerism, the equilibrium between the keto form and enol form depends on factors like temperature and solvent.
Updated On: Jan 14, 2026
  • A
  • B
  • C
  • D
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The Correct Option is D

Solution and Explanation

Keto-enol tautomerism is a type of isomerism where a compound exists in two forms: a keto form and an enol form. Both compounds 1 and 2 exhibit this type of tautomerism.

Step 2: Conclusion.
Thus, the correct answer is (4) Both (1) and (2).
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