Nitrobenzene gives $N$-phenylhydroxylamine by

Identify the product $(Y)$ in the following reaction sequence:
$C_6H_5NH_2$ $\xrightarrow{CHCl_3, KOH, \Delta} X$ $\xrightarrow{LiAlH_4, H_2O} Y$

Ethyl amine undergoes oxidation in the presence of $KMnO_4$ to form

Which of the following has the highest $pK_b$ value?

In which of the following,reagent and product are correctly matched with respect to benzene diazonium chloride as reactant?

Consider the following four compounds $I, II, III,$ and $IV$.
Choose the correct statement$(s)$.
$(A)$ The order of basicity is $II > I > III > IV$.
$(B)$ The magnitude of $pK_b$ difference between $I$ and $II$ is more than that between $III$ and $IV$.
$(C)$ Resonance effect is more in $III$ than in $IV$.
$(D)$ Steric effect makes compound $IV$ more basic than $III$.