Question

Which of the following can show geometrical isomerism?
I.

II.
III.

• A. II and I
• B. II and III
• C. III
• D. All of the above.

Answer 1

The correct option is C III

I will not show geometrical isomerism since third ring has same groups at ortho positions.
II will not show geometrical isomerism as Br groups at para positions of first and third ring, also same Me group at ortho positions of first ring.
III will show geometrical isomerism since first and third rings is in the same plane thus it will show geometrical isomerism.
Hence I and II will not show geometrical isomerism.