Carbylamine is liberated when $.....$ is heated with chloroform and alcoholic potash.

Which of the following amines, when heated with ethanolic $KOH$ and chloroform $(CHCl_3)$, does $NOT$ produce a foul smell?

Aniline dissolved in dilute $HCl$ is reacted with sodium nitrite at $0\,^oC$. This solution was added dropwise to a solution containing an equimolar mixture of aniline and phenol in dilute $HCl$. The structure of the major product is

Arrange the following in decreasing order of their basic strength:
$C_6H_5NH_2, C_2H_5NH_2, (C_2H_5)_2NH, NH_3$

Arrange the following compounds in decreasing order of basic strength:

The correct order of basicities of the following compounds is:
$1. CH_3-C(=NH)NH_2$ (Acetamidine)
$2. (CH_3)_2NH$ (Dimethylamine)
$3. CH_3-CH_2-NH_2$ (Ethylamine)
$4. CH_3-CONH_2$ (Acetamide)