JEE Advanced 2023 Paper 2 Solutions

Paragraph for next two questionsA trinitro compound, 1,3,5-tris-(4-nitrophenyl) benzene, on complete reaction with an excess of $\mathrm{Sn}/\mathrm{HCl}$ gives a major product, which on treatment with an excess of $\mathrm{NaNO}_2/\mathrm{HCl}$ at $0^{\circ}\mathrm{C}$ provides $\mathbf{P}$ as the product. $\mathbf{P}$, upon treatment with excess of $\mathrm{H}_2\mathrm{O}$ at room temperature, gives the product $\mathbf{Q}$. Bromination of $\mathbf{Q}$ in aqueous medium furnishes the product $\mathbf{R}$. The compound $\mathbf{P}$ upon treatment with an excess of phenol under basic conditions gives the product $\mathbf{S}$.The molar mass difference between compounds $\mathbf{Q}$ and $\mathbf{R}$ is $474\,\mathrm{g}\,\mathrm{mol}^{-1}$ and between compounds $\mathbf{P}$ and $\mathbf{S}$ is $172.5\,\mathrm{g}\,\mathrm{mol}^{-1}$.