The acid used in lead storage cells is
(1) phosphoric acid
(2) hydrochloric acid
(3) nitric acid
(4) sulphuric acid
Answer: (4) Dilute sulfuric acid {H2SO4} serves as the electrolyte in a lead storage battery. The electrodes of the cells in a lead storage battery consist of lead grids. The openings of the anodic grid are filled with spongy (porous) lead. The openings of the cathodic grid are filled with lead dioxide {PbO2}.
