The correct statement about charging of the lead storage battery is:

1. PbSO4 anode is reduced to Pb.
2. PbSO4 cathode is reduced to Pb.
3. PbSO4 cathode is oxidised to Pb.
​​​​​​
4. PbSO4 anode is oxidised to PbO2.

Subtopic:  Batteries & Salt Bridge |
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Match the items of Column I and Column II. 

Column I Column II
A  Lead storage battery 1. Maximum efficiency
B  Mercury cell 2. Prevented by galvanization
C  Fuel cell 3. Gives steady potential
Rusting 4. Pb is an anode, PbO2 is cathode 

Codes:

Options:  A   B   C   D 
1.  2  3  4  1
2.  1  2  3  5
3.  5  4  3  2
4.  4  3  1  2

Subtopic:  Batteries & Salt Bridge |
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Match Column-I (Types of cell) with Column-II (Characteristics shown by cells ) and mark the appropriate option:

Column I
 (Type of cell)
Column II
(Characteristics)
A Lechlanche cell  1. Cell reaction 2H2 +O2 → 2H2O
B Ni-Cd cell  2. Does not involve any ion in solution and is used in hearing aids.
C Fuel cell  3.  Rechargeable
Mercury cell  4. -Reaction at anode, Zn  → Zn2+ + 2e-

Codes:

Options:  A   B   C   D 
1.  2  3  4  1
2.  4 3 1 2
3. 1 4 3 2
4. 4 1 3 2

Subtopic:  Batteries & Salt Bridge |
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Assertion (A):  Mercury cell does not give steady potential.
Reason (R):  In the cell reaction, ions are not involved in the solution.

1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

Subtopic:  Batteries & Salt Bridge |
 59%
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