$DDT$ is prepared by reacting chlorobenzene with

The strongest nucleophile in a polar protic solvent is:

Match the following reactants with their corresponding products:
Reactants:
$(A)$ $C_2H_5Cl$,moist $Ag_2O$
$(B)$ $C_2H_5Cl$,ethanolic $AgCN$
$(C)$ $C_2H_5Cl$,ethanolic $AgNO_2$
$(D)$ $C_2H_5Cl$,ethanolic $KOH$
Products:
$(i)$ $CH_3CH_2ONO$
$(ii)$ $C_2H_4$
$(iii)$ $CH_3CH_2OH$
$(iv)$ $CH_3CH_2NC$
Select the correct match:

The main product formed when ethylbenzene reacts with $Cl_2$ in the presence of light is:

Give the chemical reactions for the following conversions:
$(1)$ Tertiary butyl alcohol from $1-$bromo$-2-$methylpropane
$(2)$ Ethanol from $1,2-$dibromoethane

The order of reactivity of the compounds $C_6H_5CH_2Br$,$C_6H_5CH(C_6H_5)Br$,$C_6H_5CH(CH_3)Br$ and $C_6H_5C(CH_3)(C_6H_5)Br$ in $S_N2$ reaction is