A non metal forms sulphuric acid on reacting with nitric acid identify the non metal

• Sulphur is the non-metal that forms sulphuric acid on reacting with nitric acid.
• Nitric acid $\left({\mathrm{HNO}}_3\right)$ is an oxidizing acid and it can oxidize sulfur into its higher oxidation states ($+4$ or $+6)$. According to the temperature of the concentrated nitric acid solution, sulfur is oxidized to sulfur dioxide (${\mathrm{SO}}_2$) or sulfuric acid (${\mathrm{H}}_2{\mathrm{SO}}_4$) acid.
• $\mathrm{S}\left(\mathrm{s}\right)+6{\mathrm{HNO}}_3\left(\mathrm{l}\right)\to {\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{l}\right)+6{\mathrm{NO}}_2\left(\mathrm{g}\right)+2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$