What is the product formed when nitrobenzene undergoes nitration?

$R-CONH_2 + xNaOH + Br_2 \to R-NH_2 + 2NaBr + Na_2CO_3 + H_2O$
The number of moles of $NaOH$ used in the above Hoffmann bromamide reaction is:

If methyl is the alkyl group,then which order of basicity is correct for the amines in an aqueous solution?

Nitrosobenzene can be isolated from nitrobenzene under which of the following conditions?

Under what reaction conditions (acidic/basic),the coupling reaction of aryldiazonium chloride with aniline is carried out?

Acetic acid on heating with $NH_3$ forms $A$. When $A$ reacts with $LiAlH_4$ followed by hydrolysis,it gives $B$. When $B$ is heated with chloroform in $KOH$ medium,it gives $C$. What are $B$ and $C$ respectively?