Chemistry - GOC Question with Solution | TestHub

Acidic nature is more, if the stability of the conjugate base is more. Electron withdrawing groups increases the stability. Nitro group at para position shows $-\mathrm{M}$ effect and meta position it shows $-\mathrm{I}$ effect only.

Methoxy group at meta position shows $-\mathrm{I}$ effect, but effect is Iess than nitro group. Methoxy group at para position shows $+\mathrm{M}$ effect that decreases the acidic nature.