In the given reaction,identify the product $[X]$:

The product $(B)$ of the above reaction is:

In the following scheme of reaction,$X, Y$ and $Z$ respectively are:

Match the reactions in Column-$A$ with the products in Column-$B$ and select the correct option:

Column-$A$	Column-$B$
$(1)$ $CH_3-CH_2-Cl + KOH_{(aq)} \rightarrow$	$(A)$ $1,2-\text{dichloroethane}$
$(2)$ $CH_3-CH_2-CH_2-CH_3 \xrightarrow{AlCl_3/HCl}$	$(B)$ $\text{Chloromethane}$
$(3)$ $CH_3-CH_2-Br + \text{alc. } KOH \rightarrow$	$(C)$ $\text{But-2-ene}$
$(4)$ $CH_2=CH_2 + Cl_2 \rightarrow$	$(D)$ $\text{Ethanol}$
	$(E)$ $\text{Chloroethane}$
	$(F)$ $\text{Ethene}$
	$(G)$ $\text{Isobutane}$

Identify the correct order of reactivity for the following pairs towards the respective mechanism:
$(A)$ $S_{N}2$: Isobutyl bromide > tert-Butyl bromide
$(B)$ $S_{N}1$: Benzyl bromide > $2-$Phenylethyl bromide
$(C)$ Electrophilic substitution: Chlorobenzene > $1-$Chloro$-4-$nitrobenzene
$(D)$ Nucleophilic substitution: Bromobenzene < $1-$Bromo$-4-$nitrobenzene
Choose the correct answer from the options given below:

Match the List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. Finkelstein reaction	$I$. $SbF_3$
$B$. Swarts reaction	$II$. $Na$, dry ether
$C$. Sandmeyer's reaction	$III$. $NaI$
$D$. Fittig reaction	$IV$. $Cu_2Cl_2$

Choose the correct answer from the options given below: