Question: which one of the following is a constitutional isomer of cyclohexane?
Answer: Cyclohexane isomers are compounds that contain atoms or groups of atoms bonded to the cyclohexane ring itself. 1,2-Dichlorocyclohexane and 1,4-dichlorocyclohexane represent what are called constitutional isomers, which are compounds that have the same chemical formula, but the atoms are connected differently.