Question

why the CH3 attached at the meta position of aniline cannot show +I effect strongly than that present at the para position?​

Answer 1

answer:

the methyl group is an ortho, para directing group. ... Thus, the nitro group is a meta directing group. Ortho, para directing groups are electron-donating groups; meta directing groups are electron-withdrawing groups.

They increase the electron density inpositions ortho and para to the methyl group making these areas susceptible to attack by electrophiles. And in benzonitrile, the resonancestructures reduce the electron density on the ortho and para positionsmaking the meta position relatively electron rich.

explanation:

The Ortho effect is specific to aniline and benzoic acids. It states that the ortho-substituted benzoic acids and anilines are respectively more acidic than benzoic acid and aniline.