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When a lead storage battery is discharged:
A. `SO_(2)` is evolved
B. lead is formed
C. lead sulphate is consumed
D. sulphuric acid is consumed

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Correct Answer - D
The reaction occuring during operation of battery is
`Pb + PbO_(2) + 2H_(2)SO_(4) to 2 Pb SO_(4) + 2H_(2)O`

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