Combustion Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. Which two products are made when methane burns completely?
- A. Carbon and water
- B. Carbon dioxide and water
- C. Carbon monoxide and water
- D. Carbon dioxide and hydrogen
2. A gas cooker has a yellow flame and black marks on the pan. What is the likely cause?
- A. Too much oxygen
- B. Complete combustion
- C. Too little fuel
- D. Not enough oxygen
3. Which of these is NOT needed for a fire?
- A. Fuel
- B. Oxygen
- C. Carbon monoxide
- D. Heat
4. Why is carbon monoxide so dangerous?
- A. It is corrosive
- B. It is toxic and cannot be seen or smelled
- C. It makes soot
- D. It is explosive
5. What type of reaction is combustion?
- A. Exothermic, because energy is released to the surroundings
- B. Endothermic, because it takes in energy
- C. Neutralisation
- D. Reduction with hydrogen