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Q.

The reaction occuring at cathode during the charging of lead storage batter is represented as

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a

$Pb ⟶ {Pb}^{2 +} + 2 e^{-}$

b

${PbSO}_{4} + 2 H_{2} O ⟶ {PbO}_{2} + 4 H^{+} + {SO}_{4}^{2 -} + 2 e^{-}$

c

${Pb}^{2 +} + 2 e^{-} ⟶ Pb$

d

${Pb}^{2 +} + {SO}_{4}^{2 -} ⟶ {PbSO}_{4}$

answer is B.

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