Question

Which of the following pairs is/are tautomers of each other?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A), (C), (D)

Tautomers are structural isomers (constitutional isomers) of chemical compounds that readily interconvert. This interconversion commonly results in the relocation of a proton. The pair shown above are functional isomers and not tautomers. They don't interconvert. The rest examples are all pairs of tautomers.