What will be the final product in the given reaction?

How many $(\sigma)$ and $(\pi)$ bonds are present in the structure of $DDT$ respectively?

Write the structure of the major organic product in each of the following reactions:
$(i)$ $CH_3-CH_2-CH_2-Cl + NaI \xrightarrow[\text{heat}]{\text{acetone}}$
$(ii)$ $CH_3-C(CH_3)_2-Br + KOH \xrightarrow[\text{heat}]{\text{ethanol}}$
$(iii)$ $CH_3-CH(Br)-CH_2-CH_3 + NaOH \xrightarrow{\text{water}}$
$(iv)$ $CH_3-CH_2-Br + KCN \xrightarrow{\text{aq. ethanol}}$
$(v)$ $C_6H_5-ONa + C_2H_5-Cl \longrightarrow$
$(vi)$ $CH_3-CH_2-CH_2-OH + SOCl_2 \longrightarrow$
$(vii)$ $CH_3-CH_2-CH=CH_2 + HBr \xrightarrow{\text{peroxide}}$
$(viii)$ $CH_3-CH=C(CH_3)_2 + HBr \longrightarrow$

Match List-$I$ with List-$II$:
| List-$I$ | List-$II$ |
| :--- | :--- |
| $A$. $C_6H_5Cl + CH_3Cl + 2Na \rightarrow C_6H_5CH_3 + 2NaCl$ | $I$. Wurtz-Fitting reaction |
| $B$. $2C_6H_5Cl + 2Na \rightarrow C_6H_5-C_6H_5 + 2NaCl$ | $II$. Fitting reaction |
| $C$. $C_6H_5N_2^+Cl^- \xrightarrow{Cu_2Cl_2} C_6H_5Cl + N_2$ | $III$. Sandmeyer reaction |
| $D$. $C_2H_5Cl + NaI \rightarrow C_2H_5I + NaCl$ | $IV$. Finkelstein reaction |

Identify the product in the following reaction:

In the given reaction,$[X]$ will be: