Which of the following reactions does not result in the chlorination of benzene?

In the given reaction sequence,the conversion of $Y$ to $Z$ is:

What is the increasing order of nucleophilic substitution reaction for the following compounds?
$(I)$ $C_6H_5-CH_3$
$(II)$ $C_6H_6$
$(III)$ $C_6H_5-COOH$

$p-$Nitrotoluene on further nitration gives :

The reaction of compound $P$ with $CH_3MgBr$ (excess) in $(C_2H_5)_2O$ followed by addition of $H_2O$ gives $Q$. The compound $Q$ on treatment with $H_2SO_4$ at $0^{\circ}C$ gives $R$. The reaction of $R$ with $CH_3COCl$ in the presence of anhydrous $AlCl_3$ in $CH_2Cl_2$ followed by treatment with $H_2O$ produces compound $S$ [$Et$ in compound $P$ is ethyl group].
$(1)$ The product $S$ is
$(2)$ The reactions,$Q$ to $R$ and $R$ to $S$,are

$A$. Dehydration and Friedel-Crafts acylation	$B$. Aromatic sulfonation and Friedel-Crafts acylation
$C$. Friedel-Crafts alkylation,dehydration and Friedel-Crafts acylation	$D$. Friedel-Crafts alkylation and Friedel-Crafts acylation

Given the answer question $(1)$ and $(2)$

$\text{Benzene} + Cl_2$ $\xrightarrow{FeCl_3} X$ $\xrightarrow{R-X, \text{ Na/dry ether }} Y$
Conversion of $X$ to $Y$ is an example of: