Hi Candidate,

Before proceeding to the Question, let us know about Isomerism- Chemical compounds that have identical chemical formulae but differ in properties and the arrangement of atoms in the molecule are called isomers and the phenomenon is called Isomerism.

Benzyl cyclohexane sulphonate and cyclohexenyl benzene sulphonate are examples of Functional Isomers as these isomers have the molecular formula remains the same, but the type of functional group in the atom is changed.

Hope that this answer helps you.