For lead storage battery pick the correct statements A. During charging of battery, \(\mathrm{PbSO}_{4}\) on anode is converted into \(\mathrm{PbO}_{2}\) B. During charging of battery, \(\mathrm{PbSO}_{4}\) on cathode is converted into \(\mathrm{PbO}_{2}\) C. Lead storage battery, consists of grid of lead packed with \(\mathrm{PbO}_{2}\) as anode D. Lead storage battery has \(\sim 38\%\) solution of sulphuric acid as an electrolyte Choose the correct answer from the options given below:

JEE Main · 2023 · 12 Apr 2023 · Shift 1 · Redox Reactions and Electrochemistry

For lead storage battery pick the correct statements
A. During charging of battery,

PbSO_{4}

on anode is converted into

PbO_{2}

B. During charging of battery,

PbSO_{4}

on cathode is converted into

PbO_{2}

C. Lead storage battery, consists of grid of lead packed with

PbO_{2}

as anode
D. Lead storage battery has

\sim 38%

solution of sulphuric acid as an electrolyte
Choose the correct answer from the options given below:

Answer: (A)

In a charged lead storage cell the negative electrode is spongy lead, Pb, and the positive electrode is a lead grid packed with

PbO X_{2}

; the electrolyte is about

38%

sulphuric acid. On discharge both electrodes are converted to

PbSO X_{4}

. Charging reverses this: the

PbSO X_{4}

at the lead electrode returns to Pb, while the

PbSO X_{4}

at the

PbO X_{2}

electrode is reconverted to

PbO X_{2}

. Thus the claim that

PbSO X_{4}

at the anode becomes

PbO X_{2}

is false, and the claim that the

PbO X_{2}

grid is the anode is also false. The correct statements are that on charging the

PbSO X_{4}

at the cathode is turned back into

PbO X_{2}

and that the electrolyte is about

38%

sulphuric acid.

JEE Main · 2023 · 12 Apr 2023 · Shift 1 · Single correct option