What will be the product of the reaction $Ph-Cl + Fe / Br_2$?

Number of compounds from the following which cannot undergo Friedel-Crafts reactions is ............ toluene,nitrobenzene,xylene,cumene,aniline,chlorobenzene,$m$-nitroaniline,$m$-dinitrobenzene

Aryl halides are extremely less reactive towards nucleophilic substitution. Predict and explain the order of reactivity of the following compounds towards nucleophilic substitution:
$(I)$ $p$-nitrochlorobenzene
$(II)$ $2,4$-dinitrochlorobenzene
$(III)$ $2,4,6$-trinitrochlorobenzene

The reaction between chlorobenzene and chloral in the presence of concentrated sulphuric acid produces $:$

Chlorination of toluene in the presence of ferric chloride gives........

The reaction of $2,6-$dideutero-fluorobenzene with $NaNH_2$ in liquid $NH_3$ gives: