Q.

Which one of the following compounds can exist as cis-trans isomers           [2025]

1 1,1-Dimethylcyclopropane  
2 1,2-Dimethylcyclohexane  
3 Pent-1-ene  
4 2-Methylhex-2-ene  

Ans.

(2)

1,2-Dimethylcyclohexane will show geometrical isomerism.