Identify the medium required for the formation of $p$-Hydroxyazobenzene from benzene diazonium chloride and phenol.

Identify the final product $Z$ in the following reaction sequence:

Which of the following is the most basic substance?

The reaction of aniline with benzaldehyde is:

With respect to the following reaction,consider the given statements:
$C_6H_5NH_2 \xrightarrow{HNO_3, H_2SO_4, 288 \ K} \text{products}$
$(A)$ $o$-Nitroaniline and $p$-nitroaniline are the predominant products.
$(B)$ $p$-Nitroaniline and $m$-nitroaniline are the predominant products.
$(C)$ $HNO_3$ acts as an acid.
$(D)$ $H_2SO_4$ acts as an acid.

The product $(C)$ of the following reaction is: