Arrange the following in decreasing order of the pK_b values

${\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2, {\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NHCH}}_3 ,({\mathrm{C}}_2{\mathrm{H}}_5{)}_2\mathrm{NH} \mathrm{and} {\mathrm{CH}}_3{\mathrm{NH}}_2$

Arrange the following increasing order of basic strength

${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NH}}_2,{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{N} ({\mathrm{CH}}_3{)}_2 ,({\mathrm{C}}_2{\mathrm{H}}_5{)}_2\mathrm{NH} \mathrm{and} {\mathrm{CH}}_3{\mathrm{NH}}_2$

Arrange the following in decreasing order of basic strength

How will you prepare propan – 1- amine from

butane nitrile

How will you prepare propan – 1- amine from

propanamide

How will you prepare propan – 1- amine from

1- nitropropane

Identify A,B,C and D

${\mathrm{CH}}_3-{\mathrm{NO}}_2-\stackrel{{\mathrm{LiAlH}}_4}{\to }\mathrm{A}\stackrel{2{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Br}}{\to }\mathrm{B}\stackrel{{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }\mathrm{C}$

How will you convert diethylamine into $\mathrm{N}, \mathrm{N}$ – diethylacetamide?

How will you convert diethylamine into

N – nitrosodiethylamine