The number of secondary amines with the molecular formula $C_4H_{11}N$ is

How will you carry out the following conversion?
$Aniline \rightarrow m-Bromonitrobenzene$

Which of the following gives a bad smell (foul odor) when treated with $CHCl_3 / KOH$?

Which of the following compounds is more basic in its aqueous solution?

The product$(s)$ of the following reaction sequence is(are):
Aniline $\xrightarrow[\text{ii) } KBrO_3/HBr]{\text{i) Acetic anhydride/pyridine}}$ $\xrightarrow[\text{iv) } NaNO_2/HCl, 273-278 \ K]{\text{iii) } H_3O^+, \text{heat}}$ $\xrightarrow{\text{v) } Cu/HBr} \text{Product}$

Identify $X$ and $Y$ in the following reaction: ${C_6H_5NH_2}$ $\xrightarrow[0^{\circ} - 5^{\circ}C]{NaNO_2 + 2HCl} X$ $\xrightarrow[H_2O]{HNO_2} Y + N_2 + HCl$