When a lead storage battery is discharged,
A
SO<sub>2</sub> is evolved
B
Lead sulphate is consumed
C
Lead is formed
D
Sulphuric acid is consumed
Correct Answer: Sulphuric acid is consumed
Discharging the stored energy relies on both the positive and negative plates becoming lead(II) sulphate and the electrolyte losing much of its dissolved sulfuric acid. Hence, sulphuric acid is consumed.