The $C-Cl$ bond lengths (in $pm$) in haloarene and haloalkane are respectively:

Which of the following does not give Friedel-Crafts reaction?

What is the correct order of reactivity for electrophilic substitution reactions for the following compounds?

The reaction of an aryl halide with sodium metal in the presence of dry ether to form a biphenyl is known as:

The major product $(F)$ in the following reaction is:
$3$-chloroanisole $\xrightarrow{NaNH_2 \text{ in liquid } NH_3} F$

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