Hydrogen Fuel Cells Quiz
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5 questions, one answer each
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1. What is the only waste product of a hydrogen-oxygen fuel cell?
- A. Carbon dioxide
- B. Water
- C. Nitrogen
- D. Sulfur dioxide
2. What two substances react inside a hydrogen fuel cell?
- A. Hydrogen and nitrogen
- B. Hydrogen and oxygen
- C. Methane and oxygen
- D. Carbon and oxygen
3. Which of these is a genuine disadvantage of hydrogen as a vehicle fuel?
- A. It produces large amounts of carbon dioxide
- B. It is difficult and expensive to store safely
- C. It cannot react with oxygen
- D. It only works in cold climates
4. Compared with a hydrogen combustion engine, why is a hydrogen fuel cell generally considered better for air quality?
- A. It produces more energy per gram
- B. It converts chemical energy directly to electricity without producing nitrogen oxides
- C. It does not require any oxygen
- D. It burns hydrogen at a lower temperature
5. A company claims their hydrogen-fuel-cell car is completely pollution-free 'from start to finish.' Which statement best challenges this claim?
- A. Fuel cells produce carbon dioxide as well as water
- B. The hydrogen itself may have been produced using energy from fossil fuels, which could cause pollution elsewhere
- C. Hydrogen cannot be produced from water
- D. Fuel cells are less efficient than petrol engines