For lead storage battery pick the correct statements
A. During charging of battery, PbSO$$_4$$ on anode is converted into PbO$$_2$$
B. During charging of battery, PbSO$$_4$$ on cathode is converted into PbO$$_2$$
C. Lead storage battery consists of grid of lead packed with PbO$$_2$$ as anode
D. Lead storage battery has ~38% solution of sulphuric acid as an electrolyte
Choose the correct answer from the options given below:

A lead storage battery is a secondary cell (rechargeable).
To evaluate the statements, we analyze its composition and chemical processes during discharging and charging cycles.

1. Battery Construction (Standard State)

• Anode: Spongy Lead ($$Pb$$).
• Cathode: A grid of lead packed with Lead Dioxide ($$PbO_2$$).
• Electrolyte: An aqueous solution of Sulphuric Acid ($$H_{2}SO_4$$), approximately 38% by mass (density ≈ 1.30 g/mL).

2. Chemical Reactions During Charging

During the charging process, an external electrical source reverses the spontaneous cell reactions. The $$PbSO_4$$ deposited during discharge is converted back:

At Anode (Reduction during charging):

At Cathode (Oxidation during charging):