Chemistry - STEREO ISOMERISM Question with Solution | TestHub

Geometrical isomerism in cyclic alkenes depends on the possibility of cis–trans arrangements.

In option (D), the double bond is inside a six-membered ring.

The trans form of a cyclohexene double bond is not possible because of ring-angle/strain restrictions.

Hence, only one geometrical form is possible.

Therefore, (D) does not show geometrical isomerism.