Primary and Secondary Cells NDA Questions

NDA Physics

Primary and Secondary Cells MCQ Questions


7.
Which primary cell is known for its use in small electronic devices?
A.
Nickel-cadmium cell
B.
Alkaline cell
C.
Lead-acid battery
D.
Nickel-metal hydride cell
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ANSWER :
B. Alkaline cell
8.
Which electrolyte is used in a zinc-carbon cell?
A.
Sulfuric acid
B.
Ammonium chloride
C.
Potassium hydroxide
D.
Lithium salt
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ANSWER :
B. Ammonium chloride
9.
Primary cells are usually discarded after
A.
Being recharged
B.
Discharge
C.
Partial use
D.
One cycle
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ANSWER :
B. Discharge
10.
What is the standard voltage of an alkaline cell?
A.
1.2V
B.
1.5V
C.
2.0V
D.
3.0V
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ANSWER :
B. 1.5V
11.
In a dry cell, the electrolyte is typically in the form of
A.
Liquid
B.
Paste
C.
Solid
D.
Gas
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ANSWER :
B. Paste
12.
Which component acts as the cathode in a zinc-carbon cell?
A.
Zinc casing
B.
Carbon rod
C.
Lithium sheet
D.
Nickel strip
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ANSWER :
B. Carbon rod