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In charging the lead accumulator battery

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In charging the lead accumulator battery
A. `PbO_(2)` dissolves
B. `H_(2)SO_(4)` is reproduced
C. `PbSO_(4)` deposits on lead electrode
D. Pb deposits on lead eletrode
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Correct Answer - B
Reactions taking place during charging i.e., when electrical energy is supplied to it from an external field.
`2PbSO_(4(s))+2H_(2)OtoPb_((s))+PbO_(2(s))`
`+4H_((aq))^(+)+2SO_(4(aq))^(2-)`.
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