JAMB Physics 2019 Paper

Concept:A lead-acid accumulator is an electrochemical cell with lead-based electrodes and an acidic electrolyte.Explanation:The positive electrode is lead(IV) oxide, $\mathrm{PbO}_2$.The negative electrode is spongy lead, $\mathrm{Pb}$.The electrolyte is tetraoxosulphate(VI) acid, $\mathrm{H}_2\mathrm{SO}_4$, which is also called sulphuric acid.Hence, the only correct description in the options is the presence of tetraoxosulphate(VI) acid as the electrolyte.Answer:D. tetraoxosulphate (vi) acid as the electrolyte.