Which of the following will not show geometrical isomerism?
The correct option is B Conditions for geometrical isomers: 1) Free rotation must be restricted. 2) Both the terminals must be attached with different groups. 3) Terminals must not be in perpendicular planes. structure a, c and d have two different groups at the terminal carbon of double bond as well as restricted rotation (double bond) thus they will show geometrical isomerism. In option (b), the two groups (two H atoms) are same around the tereminal carbonof double bond . Hence, it will not show geometrical isomerism.