Amino group, `-NH_(2)` is ortho, para-directing group in case of aromatic electrophilic substitution but nitration of aniline produce a good amount of m-nitroaniline. This is because

Options

A. Amino group is ortho-,para-directing for aromatic electrophilic substitution. On nitration of aniline, good amount of m-nitroaniline is obtained. This is due to
B. `-NH_(2)` get conveted `-NH_(3)^(+)`, which is m-directing
C. `-NH_(2)` becomes `-NH^(+)SO_(4)^(-)`, which is m-directing
D. `-NH_(2)` becomes `-NH^(-)NO_(2)^(+)`, which is m-directing

Answer

B

Explanation

Protonation of the `-NH_(2)` group gives `overset(+)(N)H_(3)` which is m-directing.