What is $\mathrm{Z}$ in the following sequence of reactions?
$\mathrm{p}-\text{ chloronitrobenzene }\underset{\left(2\right){\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{\left(1\right)\mathrm{NaOH},443 \mathrm{K}}{\to }}\text{X}\underset{0-5°\mathrm{C}}{\overset{\stackrel{\left(\mathrm{i}\right)\mathrm{Sn}+\mathrm{HCl}}{\left(\mathrm{ii}\right){\mathrm{NaNO}}_2/\mathrm{HCl}}}{\to }}\mathrm{Y}\underset{10°\mathrm{C}}{\overset{{\mathrm{H}}_2\mathrm{O}}{\to }}\mathrm{Z}$