Answer 1

The final product is cyclohexene.

Answer 2

Step 1: Cyclohexanol reacts with $\text{PBr}_3$ to form bromocyclohexane via substitution of the $\text{-OH}$ group by $\text{-Br}$.

Step 2: Bromocyclohexane undergoes elimination reaction with alcoholic $\text{KOH}$ (dehydrohalogenation) to form cyclohexene.

Structure of cyclohexene: $\text{C1=CCCCC1}$

Cyclohexanol: $\text{C1CCCCC1O}$

Bromocyclohexane: $\text{C1CCCCC1Br}$

Cyclohexene: $\text{C1=CCCCC1}$