Fuel cells directly convert
A{'text': 'Heat energy to electrical energy', 'label': 'A'}
B{'text': 'Chemical energy of a fuel to electrical energy', 'label': 'B'}
C{'text': 'Nuclear energy to electrical energy', 'label': 'C'}
D{'text': 'Solar energy to electrical energy', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'Chemical energy of a fuel to electrical energy', 'label': 'B'}
1. Fuel cells use combustion-type reactions but electrochemically.
2. Fuel and oxidiser are supplied continuously to the electrodes.
3. They convert the chemical energy of fuel oxidation directly into electrical energy.
4. Example: H₂/O₂ fuel cell used in Apollo space programme.
_Source: NCERT Class 12 Chemistry, Unit 3 "Electrochemistry", §3.7_
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