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JEE Main levelSingle correct optionDifficulty 2 of 3pb096

In the lead storage battery, the cathode (positive plate) during discharge is

A $PbSO X_{4}$ in a graphite rod
Ba platinum plate dipping in $H X_{2} SO X_{4}$
C $PbO X_{2}$ coated on a lead grid
Dspongy lead

Answer: C

On discharge, lead at the anode is oxidised to

PbSO X_{4}

and

PbO X_{2}

at the cathode is reduced to

PbSO X_{4}

. So the cathode is

PbO X_{2}

on a lead grid.

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