Question

Which of the following cycloalkanes is not capable of showing geometrical isomerism?

• A. 3-ethyl-1,1-dimethyl cylcohexane
• B. 1,3 -dimethylcyclohexane
• C. 1-ethyl-3-methylcyclopentane
• D. 1-ethylene-2-methylcyclobutane

Answer 1

The correct option is A 3-ethyl-1,1-dimethyl cylcohexane

The compound of option A, i.e, 3-ethyl-1,1-dimethyl cylcohexane is not capable of showing geometrical isomerism as two methyl groups are attached to the same carbon atom.

Option A is correct.