(a) (i) In a chemistry practical class, the teacher gave his students an amine 'X' having molecular formula C_2 H_7 N, and asked the students to…

In a chemistry practical class, the teacher gave his students an amine 'X' having molecular formula $\displaystyle \mathrm{C}_{2} \mathrm{H}_{7} \mathrm{~N}$, and asked the students to identify the type of amine. One of the students, Neeta, observed that it reacts with $\displaystyle \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{SO}_{2} \mathrm{Cl}$, to give a compound which dissolves in NaOH solution. Can you help Neeta to identify the compound 'X' ?

Arrange the following in the increasing order of their $\displaystyle \mathrm{pK}_{\mathrm{b}}$ value in aqueous phase : $\displaystyle \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2},\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}, \mathrm{NH}_{3}, \mathrm{CH}_{3} \mathrm{NH}_{2},\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$

Aniline on nitration gives considerable amount of meta product along with ortho and para products. Why ?

Convert aniline to :

p-bromoaniline

phenol

Arun heated a mixture of ethylamine and $\displaystyle \mathrm{CHCl}_{3}$ with ethanolic KOH, which forms a foul smelling gas. Write the chemical equation involved.

Identify A and B in the following reactions :

Convert aniline to :

benzene

sulphanilic acid