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Questions and Answers
Which of the following is the definition of a fuel?
Which of the following is the definition of a fuel?
- Any substance that undergoes exothermal oxidation
- Any substance used to produce heat or power by combustion (correct)
- Any substance that produces light and heat
- Any substance that evolves into combustion product and heat
What does the term 'combustion' refer to?
What does the term 'combustion' refer to?
- Exothermal oxidation of a fuel by air or oxygen at a rapid rate (correct)
- Endothermal oxidation of a fuel by air or oxygen at a slow rate
- The conversion of a fuel into a combustion product
- The production of light and heat from a fuel
What are the products of the combustion of most fuels containing carbon or hydrogen?
What are the products of the combustion of most fuels containing carbon or hydrogen?
- Methane and sulfur dioxide
- Carbon and sulfuric acid
- Carbon monoxide and water vapor
- Carbon dioxide and water (correct)
Which classification of fuels includes natural gas?
Which classification of fuels includes natural gas?
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'Wood' is an example of which type of fuel based on physical state?
'Wood' is an example of which type of fuel based on physical state?
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Study Notes
Fuel Definition and Combustion
- A fuel is a substance that produces energy when burned or ignited.
- Combustion refers to a chemical reaction between a fuel and oxygen that releases energy, usually in the form of heat and light.
Products of Combustion
- The combustion of most fuels containing carbon or hydrogen produces carbon dioxide (CO2) and water (H2O) as products.
Fuel Classification
- Natural gas is classified as a fossil fuel.
Classification by Physical State
- Wood is an example of a solid fuel.
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