Which of the following compounds does not undergo the carbylamine reaction?

The decreasing order of basicity of the following amines is:
$(I)$ Aniline
$(II)$ Pyridine
$(III)$ Cyclohexylamine
$(IV)$ Pyrrole

What will be the name of the product formed upon the ammonolysis of benzyl chloride followed by the reaction of the resulting amine with two moles of $CH_3Cl$?

The major product in the above reaction is:

Select the percentage in which these amine derivatives are formed in the reaction mixture along with the reason for the nitration of aniline:

Identify the products $y$ and $x$ in the following reaction sequence:
$C_6H_5CONH_2 \xrightarrow{NaOBr} y$
$C_6H_5CONH_2 \xrightarrow[(ii) H_3O^+]{(i) C_6H_5SO_2Cl / py, \Delta} x$