which of the following statements is/are not correct ?

Options

A. Metamerism belongs to the category of structural isomerism
B. Tautomeric structures are the resonating structures of a molecule
C. Keto form is always more stable than the enol form
D. Geometrical isomerism is shown only by alkense

Answer

B, D

Explanation

In structural isomerism Connectivity of atoms remains same.
In tautomerism atom ossilate in the compound. Geometrical isomerism is shown by many compound like,alkane, cycloalkanes, oximes etc.