The given compound is to be reduced to its corresponding primary...

Reduction of nitro compounds to primary amines can be carried out using metal-acid mixtures such as $\mathrm{Sn}/\mathrm{HCl}$ or $\mathrm{Fe}/\mathrm{HCl}$.

In industrial processes, the use of iron scrap ($\mathrm{Fe}$) and hydrochloric acid ($\mathrm{HCl}$) is preferred over $\mathrm{Sn}/\mathrm{HCl}$.

This is because the $\mathrm{FeCl_2}$ formed during the reaction gets hydrolysed to release hydrochloric acid back into the reaction mixture:
$\mathrm{FeCl_2} + 2\mathrm{H_2O} \rightarrow \mathrm{Fe(OH)_2} + 2\mathrm{HCl}$

Thus, only a small amount of $\mathrm{HCl}$ is required to initiate the reaction, making the process highly \cos t-effective.

Answer: $\mathrm{Fe}$ scrap and $\mathrm{HCl}$