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UPSC Prelims 2024 Question on – Hydrogen Fuel Cell Vehicles Emission
Q. Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles (FCEVs), powered by hydrogen?
✅ Correct Answer: (d) Water vapour
Explanation:
- Fuel Cell Electric Vehicles use hydrogen (H₂) and oxygen (O₂) to generate electricity.
- The chemical reaction produces electricity + heat + water (H₂O).
- The only exhaust emission is water vapour, making FCEVs clean and eco-friendly.
