Answer:
Reaction mechanism follows E1 (unimolecular elimination) pathway
Explanation:
In presence of sulfuric acid, 4-methylcyclohexane undergoes E1 elimination reaction to produce 4-methylcyclohexene.
In the first step, -OH group gets protonated by sulfuric acid.
In the second step, dehydration takes place to produce a carbocation.
In the third step, deprotonation takes place to produce a double bond.
Full reaction mechanism has been shown below.
