NEET2016ChemistryGeneral Organic ChemistryActual
Which among the given molecules can exhibit tautomerism ?
Options
- AIII only.
- BBoth I   and   III .
- CBoth I   and   II .
- 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 .