Fittig's reaction produces

Chlorobenzene on heating with concentrated $HNO_3$ in the presence of concentrated $H_2SO_4$ gives:

In a set of reactions,$p$-nitrotoluene yielded a product $E$. The product $E$ would be:
$p$-nitrotoluene $\xrightarrow[FeBr_3]{Br_2} B$ $\xrightarrow{Sn/HCl} C$ $\xrightarrow[HCl]{NaNO_2} D$ $\xrightarrow[HBr]{CuBr} E$

Which among the following is $NOT$ an example of Wurtz reaction?

In which of the following compounds can the $X^{-}$ atom be most easily substituted by a stronger nucleophile?

Which of the following is a Fittig reaction?