Arrange the following compounds in decreasing order of reactivity towards $EAS$ (electrophilic aromatic substitution).

Among the following,the most acidic compound is

The most stable carbocation among the following is:

Explain the inductive effect with a suitable example.

The migratory aptitude of the following groups in decreasing order is:

Which of the following statements are correct?
$(i)$ Inductive effect and resonance effect are possible in chlorobenzene.
$(ii)$ Resonance effect dominates over inductive effect in anisole.
$(iii)$ $p-$nitrobenzoic acid is less acidic than $m-$nitrobenzoic acid.
$(iv)$ Diphenylamine is more basic than aniline.