Carbylamine is formed from aliphatic or aromatic primary amine via which of the following intermediates?

Arrange the following bases in decreasing order of basicity:
$(i)$ Aniline
$(ii)$ $o$-nitroaniline
$(iii)$ $m$-nitroaniline
$(iv)$ $p$-nitroaniline

Which of the following is not a correct statement for primary aliphatic amines?

Why is aniline soluble in aqueous $HCl$?

In the following reaction,the product $(A)$ is

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Aniline on nitration yields ortho,meta and para nitro derivatives of aniline.
Reason $R$: Nitrating mixture is a strong acidic mixture.
In the light of the above statements,choose the correct answer from the options given below.