Consider the following reaction:

Which of the following substituents on benzene is ortho-para directing in electrophilic substitution and ortho-para directing in nucleophilic substitution?

What is the intermediate compound formed when chlorobenzene is treated with fused $NaOH$ under pressure?

Describe the reactions of aryl halides with metals.

The displacement of $Cl$ from chlorobenzene to obtain phenol requires strong reaction conditions. However,the chlorine in $2, 4-$ dinitrochlorobenzene is easily displaced because ................

Arrange the following compounds in decreasing order of their rate of $S_NAr$ reaction:
$(i)$ $p$-nitrochlorobenzene
(ii) $m$-nitrochlorobenzene
(iii) $2,4$-dinitrochlorobenzene
(iv) chlorobenzene
$(v)$ $2,4,6$-trinitrochlorobenzene