Q.

Which of the following acids serves as an electrolyte in a lead storage battery?

A. Sulphuric acid
B. Lactic acid
C. Hydrochloric acid
D. Nitric acid
Answer» A. Sulphuric acid
Explanation: Dilute sulfuric acid (H2SO4) serves as the electrolyte in a lead-acid battery. Dilute sulfuric acid used for lead acid battery has ratio (to water) of 3:1 other components of the battery include: Lead peroxide (PbO2) and Sponge lead (Pb).
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