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Questions and Answers
What are some fuels used in trade and industry?
What are some fuels used in trade and industry?
- Diesel and compressed natural gas (CNG)
- Cowdung and wood
- Charcoal and petrol
- Coal and compressed natural gas (CNG) (correct)
What is combustion?
What is combustion?
- A process in which a substance reacts with nitrogen to give off heat
- A process in which a substance reacts with carbon dioxide to give off heat
- A process in which a substance reacts with water to give off heat
- A chemical process in which a substance reacts with oxygen to give off heat (correct)
What is combustion?
What is combustion?
- A process in which a substance reacts with water to give off heat
- A process in which a substance reacts with carbon dioxide to give off heat
- A process in which a substance reacts with nitrogen to give off heat
- A chemical process in which a substance reacts with oxygen to give off heat (correct)
What is the difference between the burning of a candle and the burning of a fuel like coal?
What is the difference between the burning of a candle and the burning of a fuel like coal?
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What is food considered as in the context of the text?
What is food considered as in the context of the text?
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