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NEET2016ChemistryGeneral Organic ChemistryActual

Which among the given molecules can exhibit tautomerism ?

Options

  1. AIII only.
  2. BBoth I   and   III .
  3. CBoth I   and   II .
  4. DBoth II   and   III .

Correct answer

A. III only.

Step-by-step solution

Bridge-head carbon cannot be planar sp 2 . Therefore, tautomerism will be shown only by and the enolic form would be .

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