Q.

What is used in storage batteries?

A. Copper
B. Tin
C. Lead
D. Zinc
Answer» C. Lead
Explanation: The electrodes of the cells in a storage battery consist of lead grids. The openings of the anodic grid is filled with spongy (porous) lead. The openings of the cathodic grid is filled with lead dioxide (PbO2). Dilute sulfuric acid (H2SO4) serves as the electrolyte. Lead-acid batteries, also known as lead' storage batteries, can store a lot of charge and provide high current for short periods of time.
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