For lead storage battery pick the correct statements
A. During charging of battery, PbSO₄ on anode is converted into PbO₂.
B. During charging of battery, PbSO₄ on cathode is converted into PbO₂.
C. Lead storage battery consists of grid of lead packed with PbO2 as anode.
D. Lead storage battery has ~38% solution of sulphuric acid as an electrolyte.
Choose the correct answer from the options given below:

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B,C,D only

B, C only

B, D only

A,B,D only

answer is D.

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Detailed Solution

Lead storage battery consists of lead anode and a grid of lead packed with lead oxide (PbO₂) as cathode, a 38% solution of H₂SO₄ is used as an electrolyte.
On charging the battery the reaction is reversed and PbSO₄(s) on anode and cathode is converted into Pb and PbO₂ respectively.
The charging reactions for lead storage battery are
$\begin{array}{l} {PbSO}_{4} + 2 e^{-} \to Pb + {SO}_{4}^{2 -} (cathode) \\ {PbSO}_{4} + 2 H_{2} O \to {Pbo}_{2} + {SO}_{4}^{2 -} + 4 H^{+} + 2 e^{-} (anode) \end{array}$