The $IUPAC$ name for the following compound is $BrCH_2-CH_2-CH=CH-CH_2-CO-CH_3$.

What is the $IUPAC$ name of the following compound?

Match the structures given in Column-$I$ with their $\text{IUPAC}$ names in Column-$II$.
| Column-$I$ (Structure) | Column-$II$ ($\text{IUPAC}$ Name) |
| :--- | :--- |
| $(A)$ Cyclohexanol | $(i)$ $2$-ethoxy-$1,1$-dimethylcyclohexane |
| $(B)$ $2$-methylcyclopentanol | (ii) $3$-methylphenol |
| $(C)$ $3$-methylphenol | (iii) Trihydroxybenzene |
| $(D)$ $1$-ethoxy-$2,2$-dimethylcyclohexane | (iv) $2$-methylcyclopentanol |
| $(E)$ Benzene-$1,2,4$-triol | $(v)$ Cyclohexanol |
| | (vi) Benzene-$1,2,4$-triol |

The bond line formula of $HO-CH(CN)_2$ is:

In the given compound,at which carbon number should a new group be attached to make the compound chiral? $1_{CH_3} - 2_{CH_2} - 3_{CH_2} - 4_{CH_2} - 5_{CH_2} - 6_{CH_2} - 7_{CH_3}$

Which of the following is the correct $IUPAC$ name for the compound $CH_3-CH(CH_3)-CH_2-CH(CH_3)-CH_3$?