Assertion: Mercury cell does not give steady potential.

Reason: In the cell reaction, ions are not involved in the solution.

1.  Both assertion and reason are true and the reason is the correct explanation of assertion.

2.  Both assertion and reason are true and reason is not the correct explanation of assertion.

3.  Assertion is true but the reason is false.

4. Assertion is false but the reason is true.

 

Subtopic:  Batteries & Salt Bridge |
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The correct statement regarding dry cells among the following is-

a. It is also known as Leclanche cell
b. The electrolyte is a moist paste of ammonium chloride (NH4Cl) and zinc chloride (ZnCl2 ).
c. The cathodic reaction is : MnO2 + NH4++ e-→ MnO(OH) + NH3

1. Only a and b are correct
2. Only c is correct
3. Only b and c are correct
4. All are correct 
Subtopic:  Batteries & Salt Bridge |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology

Match the items of Column I and Column II.

Column I

Column II

A. Lechlanche cell

B. Ni-Cd cell 

C. Fuel cell 

D. Mercury cell 

1. Cell reaction 2H2 +O2 —> 2H2O

2. Does not involve any ion in solution and is used in hearing aids.

3. Rechargeable

4, Reaction at anode, Zn ——> Zn2+ + 2e-

 

1)A-2,B-1,C-4,D-3

2)A-1,B-2,C-3,D-4

3)A-3,B-2,C-1,D-4

4)A-4,B-3,,C-1,D-2

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

B. Mercury cell

C. Fuel cell

D. Rusting

1. Maximum efficiency

2. Prevented by galvanisation

3. Gives steady potential

4. Pb is anode, PbO2 is cathode

Correct option is:

1) A-1,B-2,C-3,D-4

2) A-4,B-2,C-3,D-1

3) A-4,B-3,C-1,D-2

4) A-4,B-3,C-2,D-1

Subtopic:  Batteries & Salt Bridge |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology