Identify the product of the following Wurtz-Fittig reaction.

Replacement of $Cl$ of chlorobenzene to give phenol requires drastic conditions,but chlorine of $2,4-$dinitrochlorobenzene is readily replaced because:

What is the product of the bromination of $p$-methylacetanilide with $Br_2$ in $CS_2$?

Which of the following has the highest melting point?

The decreasing order of reactivity of $m$-nitrobromobenzene $(I)$,$2,4,6$-trinitrobromobenzene $(II)$,$p$-nitrobromobenzene $(III)$,and $2,4$-dinitrobromobenzene $(IV)$ towards $OH^{-}$ ions is

Identify $A$ in the following reaction.
$A + \text{chloromethane} \xrightarrow[AlCl_3]{\text{Anhydrous}} 1-\text{chlorotoluene} + 4-\text{chlorotoluene}$