Heating chlorobenzene with chloral in the presence of concentrated $H_2SO_4$ yields which of the following products?

Select the reaction giving the correct major product.

Which of the following reactions does not give chlorobenzene as a product?

Rank the following compounds in order of decreasing rate of reaction with alkoxide ion $(CH_3CH_2O^{-})$ in a nucleophilic aromatic substitution reaction:
$1$. $1$-bromo-$2$-nitrobenzene
$2$. $1$-bromo-$3$-nitrobenzene
$3$. $1$-bromo-$2,4$-dinitrobenzene
$4$. $1$-bromo-$3,4$-dinitrobenzene

The alkyl halide that does not give a white precipitate with alcoholic $AgNO_3$ solution is ................. .

Which of the following reagents cannot be used in a Friedel-Crafts reaction?