Question

Which of the following compound will exhibit geometrical isomerism?

• A. 1-Phenyl-2-butene
• B. 3-Phenyl-1-butene
• C. 2-Phenyl-1-butene
• D. 1,1-Diphenyl-1-propene

Answer 1

The correct option is A 1-Phenyl-2-butene

Molecules with restricted rotation and having two different groups on both restricted atoms can exhibit geometrical isomerism.
1-Phenyl-2-butene can exhibit geometrical isomerism as both the double bonded carbons are differently substituted.