The product of the reaction $image \xrightarrow[{HCl}]{{NaNO_2}} (A)$ is:

For the following diazonium ions,the order of reactivity towards diazo-coupling with phenol in the presence of dilute $NaOH$ is:
$(I)$ $p-Me_2N-C_6H_4-N_2^+$
$(II)$ $p-O_2N-C_6H_4-N_2^+$
$(III)$ $p-CH_3O-C_6H_4-N_2^+$
$(IV)$ $p-CH_3-C_6H_4-N_2^+$

Which reaction is known as the Schotten-Baumann reaction?

Which of the following is the strongest base?

The correct stability order of the following diazonium salts is:

What is the product obtained in the following reaction?
$C_6H_5NO_2 \xrightarrow[{NH_4Cl}]{{Zn}} .....?$