By the presence of a halogen atom in the ring,the basic properties of aniline are:

The action of nitrous acid with ethylamine produces:

The major product $(B)$ in this reaction is:

Benzenediazonium chloride on reaction with phenol in weakly basic medium gives

In the following reaction,the product $(A)$ is:

Products $A$ and $B$ formed in the following reactions are respectively:
$p$-aminobenzenesulfonic acid + $HNO_2$ $\longrightarrow$ $A$ $\xrightarrow{C_6H_5NH_2}$ $B$