Question

The correct statement(s) concerning the structures $E,F$ and $G$ is/are

• A. $E,F$ and $G$ are resonance structures
• B. $E,F$ and $E,G$ are tautomers
• C. $F$ and $G$ are geometrical isomers
• D. $F$ and $G$ are diastereomers

Answer 1

Answer: (B), (C), (D)

$E,F$ and $G$ are not resonance structures because movement of hydrogen between $E$ and $F$ are involved.
$E,F$ and $E,G$ are tautomers in which $E$ is keto form and both $F$ and $G$ are enol form of the same $E$.
$F$ and $G$ are geometrical isomers.
$F$ and $G$ are distereomers as they are stereo isomers but not related by mirror image relationship.