Arrange the following anilines in decreasing order of basicity

$1.$ ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{N}{\mathrm{H}}_2$

$2.$ $\mathrm{o}-\mathrm{C}{\mathrm{H}}_3{\mathrm{C}}_6{\mathrm{H}}_4\mathrm{N}{\mathrm{H}}_2$

$3.$ $\mathrm{m}-\mathrm{C}{\mathrm{H}}_3{\mathrm{C}}_6{\mathrm{H}}_4\mathrm{N}{\mathrm{H}}_2$

$4.$ $\mathrm{p}-\mathrm{C}{\mathrm{H}}_3{\mathrm{C}}_6{\mathrm{H}}_4\mathrm{N}{\mathrm{H}}_2$

In the reaction sequence

X and Y are, respectively,

The major product of the following reaction is:

What will be the major product in the following mononitration reaction?

The major product obtained in the following reaction is:

The major product formed in the reaction given below will be :