Embibe Experts Solutions for Chapter: Organic Compounds With Functional Groups Containing Nitrogen, Exercise 1: BITSAT 2017

For the reaction ${\mathrm{C}}_6{\mathrm{H}}_5.{\mathrm{NH}}_2\underset{180°\mathrm{C}}{\overset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}\underset{\left(\mathrm{Para}\right)}{{\mathrm{H}}_2 \mathrm{N}·{\mathrm{C}}_6{\mathrm{H}}_4\left({\mathrm{SO}}_3\mathrm{H}\right)}$ the true statement about the product is

Which test among the following is not used for the distinction among $1^0, 2^0$ and $3^0$ aliphatic amine.

The most reactive amine towards reactions with dil. $\mathrm{HCl}$ is

In the reaction, 

${\mathrm{CH}}_3·{\mathrm{CH}}_2·\mathrm{Cl}\stackrel{\mathrm{KCN}}{⟶}\left(\mathrm{A}\right)\stackrel{{\mathrm{LiAlH}}_4}{⟶}\left(\mathrm{P}\right)$ end product $\left(\mathrm{P}\right)$ is

Maximum ${\mathrm{pK}}_{\mathrm{b}}$ value is of