Question

Which of the following compound(s) will show geometrical isomersm?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A), (B), (C)

In compound (a), two methyl groups are attached to the ring so it shows geometrical isomerism due to restricted rotation in the ring.

In compound (b), different groups are attached to the $s{p}^2$ carbon of the double bond so it shows geometrical isomerism.

In compound (c), even though same groups are attached about the double bond, the presence of two methyl groups in the ring shows geometrical isomerism due to restricted rotation in the ring.

In compound (d), groups attached to $s{p}^2$ carbon about the double bond are same so it does not show geometrical isomerism.