What is the product formed when acetamide reacts with $NaOBr$ in an alkaline medium?

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

In which of the following reactions is an alcohol formed as the major product?

The reaction of $N,N'$-diphenylthiourea with concentrated $HCl$ upon heating is given by:
$(C_6H_5NH)_2C=S \xrightarrow{conc. HCl, Heat} A + B$
The unknown compounds $A$ and $B$ in the above reaction are:

In the following reactions,$P$,$Q$,$R$,and $S$ are the major products.
(image)
The correct statement about $P$,$Q$,$R$,and $S$ is

Nitration of aniline also gives $m$-nitroaniline in a strong acidic medium because: