Fuel Cells NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Fuel Cells MCQ Questions


7.
Which of the following is NOT an advantage of fuel cells?
A.
High efficiency
B.
No pollution
C.
Continuous fuel supply needed
D.
No noise
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ANSWER :
C. Continuous fuel supply needed
8.
The oxidation of hydrogen occurs at
A.
Anode
B.
Cathode
C.
Both
D.
None
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ANSWER :
A. Anode
9.
Which reaction occurs at the cathode in a hydrogen-oxygen fuel cell?
A.
O₂ + 4H⁺ + 4e⁻ → 2H₂O
B.
2H₂ → 4H⁺ + 4e⁻
C.
H₂O → H⁺ + OH⁻
D.
H₂O + e⁻ → H₂ + OH⁻
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ANSWER :
A. O₂ + 4H⁺ + 4e⁻ → 2H₂O
10.
Which of these is NOT used in fuel cells?
A.
H₂
B.
O₂
C.
CO₂
D.
An electrolyte
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ANSWER :
C. CO₂
11.
Why are fuel cells considered eco-friendly?
A.
They emit greenhouse gases
B.
They produce noise
C.
They emit only water
D.
They consume fossil fuels
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ANSWER :
C. They emit only water
12.
The fuel cell works as long as
A.
Heat is supplied
B.
Fuel is supplied
C.
Oxygen is present
D.
Electrolyte is charged
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ANSWER :
B. Fuel is supplied