Chemistry · May / June 2025 · Paper 12 · Question 14
5070Hydrogen–oxygen fuel cells
Which statement about a hydrogen–oxygen fuel cell is correct?
- AIt uses a chemical reaction that has only one product.
- BIt works by burning hydrogen in air.
- CIt requires a continuous input of electrical energy.
- DIt is less efficient than a petrol engine.
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Correct answer: A. It uses a chemical reaction that has only one product.
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