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CHXII03:ELECTROCHEMISTRY

329936 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 $38 %$ solution of sulphuric acid as an electrolyte.
Choose the correct answer from the option given below:

1 a,b,d only

2 b,d only

3 b,c,d only

4 b,c only

Explanation:

In each lead storage cell, the anode is a grid of lead packed with finely divided spongy lead and cathode is a grid of lead packed with ${PbO}_{2}$ . The electrolyte is aqueous solution of sulphuric acid $38 %$ by mass.
During charging, lead is deposited on anode and ${PbO}_{2}$ on the cathode. Thus, statements b and d are correct.
So correct option is (2).

JEE - 2023

CHXII03:ELECTROCHEMISTRY

329937 A secondary cell is one which

1 can be recharged

2 can be recharged by passing current through it in the same direction

3 can be recharged by passing current through it in the opposite direction

4 cannot be recharged

CHXII03:ELECTROCHEMISTRY

329938 During discharge of a lead storage cell the density of sulphuric acid in the cell:

1 Increasing

2 Initially increases but decreases subsequently

3 Decreasing

4 Remains unchanged

Explanation:

Discharging reaction is
$P b (s) + P b O_{2} (s) + 2 H_{2} S O_{4} \to 2 P b S O_{4} + 2 H_{2} O$
During discharging reaction, concentration of $H_{2} S O_{4}$ decreases.

CHXII03:ELECTROCHEMISTRY

329939 Assertion :
Lead storage battery is a secondary cell.
Reason :
Lead storage battery is used in automobiles and invertors.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXII03:ELECTROCHEMISTRY

329936 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 $38 %$ solution of sulphuric acid as an electrolyte.
Choose the correct answer from the option given below:

1 a,b,d only

2 b,d only

3 b,c,d only

4 b,c only

Explanation:

In each lead storage cell, the anode is a grid of lead packed with finely divided spongy lead and cathode is a grid of lead packed with ${PbO}_{2}$ . The electrolyte is aqueous solution of sulphuric acid $38 %$ by mass.
During charging, lead is deposited on anode and ${PbO}_{2}$ on the cathode. Thus, statements b and d are correct.
So correct option is (2).

JEE - 2023

CHXII03:ELECTROCHEMISTRY

329937 A secondary cell is one which

1 can be recharged

2 can be recharged by passing current through it in the same direction

3 can be recharged by passing current through it in the opposite direction

4 cannot be recharged

CHXII03:ELECTROCHEMISTRY

329938 During discharge of a lead storage cell the density of sulphuric acid in the cell:

1 Increasing

2 Initially increases but decreases subsequently

3 Decreasing

4 Remains unchanged

Explanation:

Discharging reaction is
$P b (s) + P b O_{2} (s) + 2 H_{2} S O_{4} \to 2 P b S O_{4} + 2 H_{2} O$
During discharging reaction, concentration of $H_{2} S O_{4}$ decreases.

CHXII03:ELECTROCHEMISTRY

329939 Assertion :
Lead storage battery is a secondary cell.
Reason :
Lead storage battery is used in automobiles and invertors.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXII03:ELECTROCHEMISTRY

329936 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 $38 %$ solution of sulphuric acid as an electrolyte.
Choose the correct answer from the option given below:

1 a,b,d only

2 b,d only

3 b,c,d only

4 b,c only

Explanation:

In each lead storage cell, the anode is a grid of lead packed with finely divided spongy lead and cathode is a grid of lead packed with ${PbO}_{2}$ . The electrolyte is aqueous solution of sulphuric acid $38 %$ by mass.
During charging, lead is deposited on anode and ${PbO}_{2}$ on the cathode. Thus, statements b and d are correct.
So correct option is (2).

JEE - 2023

CHXII03:ELECTROCHEMISTRY

329937 A secondary cell is one which

1 can be recharged

2 can be recharged by passing current through it in the same direction

3 can be recharged by passing current through it in the opposite direction

4 cannot be recharged

CHXII03:ELECTROCHEMISTRY

329938 During discharge of a lead storage cell the density of sulphuric acid in the cell:

1 Increasing

2 Initially increases but decreases subsequently

3 Decreasing

4 Remains unchanged

Explanation:

Discharging reaction is
$P b (s) + P b O_{2} (s) + 2 H_{2} S O_{4} \to 2 P b S O_{4} + 2 H_{2} O$
During discharging reaction, concentration of $H_{2} S O_{4}$ decreases.

CHXII03:ELECTROCHEMISTRY

329939 Assertion :
Lead storage battery is a secondary cell.
Reason :
Lead storage battery is used in automobiles and invertors.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXII03:ELECTROCHEMISTRY

329936 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 $38 %$ solution of sulphuric acid as an electrolyte.
Choose the correct answer from the option given below:

1 a,b,d only

2 b,d only

3 b,c,d only

4 b,c only

Explanation:

In each lead storage cell, the anode is a grid of lead packed with finely divided spongy lead and cathode is a grid of lead packed with ${PbO}_{2}$ . The electrolyte is aqueous solution of sulphuric acid $38 %$ by mass.
During charging, lead is deposited on anode and ${PbO}_{2}$ on the cathode. Thus, statements b and d are correct.
So correct option is (2).

JEE - 2023

CHXII03:ELECTROCHEMISTRY

329937 A secondary cell is one which

1 can be recharged

2 can be recharged by passing current through it in the same direction

3 can be recharged by passing current through it in the opposite direction

4 cannot be recharged

CHXII03:ELECTROCHEMISTRY

329938 During discharge of a lead storage cell the density of sulphuric acid in the cell:

1 Increasing

2 Initially increases but decreases subsequently

3 Decreasing

4 Remains unchanged

Explanation:

Discharging reaction is
$P b (s) + P b O_{2} (s) + 2 H_{2} S O_{4} \to 2 P b S O_{4} + 2 H_{2} O$
During discharging reaction, concentration of $H_{2} S O_{4}$ decreases.

CHXII03:ELECTROCHEMISTRY

329939 Assertion :
Lead storage battery is a secondary cell.
Reason :
Lead storage battery is used in automobiles and invertors.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

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