JEE Main 2023 — Electrochemistry Question with Solution

The lead storage battery is as shown in diagram. Lead storage battery consists of lead anode and a grid of lead packed with lead oxide(${\mathrm{PbO}}_2$) as cathode, a $38\%$ solution of ${\mathrm{H}}_2{\mathrm{SO}}_4$ is used as an electrolyte. During charging of battery ${\mathrm{PbSO}}_4$ deposited on cathode is converted in ${\mathrm{PbO}}_2$ and ${\mathrm{PbSO}}_4$ deposited on anode is converted into $\mathrm{Pb}$. The electrolyte used in battery is ${\mathrm{H}}_2{\mathrm{SO}}_4$ which is about $38\%$ by mass.