$\text{ Nitration of aniline also gives }\mathrm{m}\text{-nitro aniline, in strong acidic medium because: }$

$\text{ In strong acidic medium, nitration of aniline is a nucleophic substitution reaction }$

$\text{ In strong acidic medium aniline converts to anilinium ion }$

$\text{ Inspite of substituents nitro group always goes to }\mathrm{m}\text{ - position }$

$\text{ In electrophilic substitution reaction amino group is meta directive }$