Which of the following material is used in the positive plate of a lead-acid battery?(a) Sulphuric acid(b) Spongy lead(c) Lead peroxide(d) WaterThe question was asked by my school principal while I was bunking the class.This intriguing question originated from Lead-Acid Battery in division Storage Batteries of Automotive Engine Design

Which of the following material is used in the positive plate of a lea

1.	Which of the following material is used in the positive plate of a lead-acid battery?(a) Sulphuric acid(b) Spongy lead(c) Lead peroxide(d) WaterThe question was asked by my school principal while I was bunking the class.This intriguing question originated from Lead-Acid Battery in division Storage Batteries of Automotive Engine Design
Answer» The correct answer is (c) Lead PEROXIDE To elaborate: When the battery is FULLY CHARGED there is lead peroxide on the positive plate and lead SPONGY on the negative plate as an active material. During the process of discharge, the chemical reactions forms lead sulphate on both the PLATES thereby liberating water.

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