Browse Questions

# The structure shows:

(a) geometrical isomerism

(b) optical isomerism

(c) geometrical and optical isomerism

(d) Tautomerism

It has an asymmetric carbon $(C^*)$ so it will show optical isomerism .
It will not show geometric isomerism because the carbons along $C=C$ do not posses the same structural formula.
In it tautomerism is not possible because -co group is not present in it .
Hence b is the correct answer.