Which one of the following does not give a white precipitate with acidified silver nitrate solution?

Which of the following compounds does not give a tribromo derivative upon reaction with $Br_2/H_2O$?

The reaction of $1-^{14}C$-chlorobenzene with $NaNH_2/NH_3$ proceeds via a benzyne intermediate. Two benzyne intermediates are formed. Reaction with the amide ion can occur in two different directions for each benzyne, giving three possible products in a $1:2:1$ ratio. Asterisk $(*)$ refers to $^{14}C$. Which of the following represents the major product$(s)$ $(A)$?

Identify the product formed from chlorobenzene on heating with conc. $HNO_3$ in the presence of conc. $H_2SO_4$.

Which reaction shows the correct major product?

The major product obtained from the reaction of $p-$chlorotoluene with $KNH_2$ in liquid $NH_3$ is ..........