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Combustion and Flame Quiz

Class VIII
Science
Combustion and Flame
15 questions
MEDIUM

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1. What is combustion?

A chemical reaction that produces light and heat · A physical change in matter · A process of cooling substances · A type of mechanical work

2. Which of the following is NOT a requirement for combustion?

Fuel · Oxygen · Heat · Water

3. What type of combustion occurs in a candle flame?

Complete combustion · Incomplete combustion · Rapid combustion · Slow combustion

4. Which gas is primarily produced during incomplete combustion?

Carbon dioxide · Oxygen · Carbon monoxide · Nitrogen

5. What is the main source of energy in a combustion reaction?

Chemical energy · Thermal energy · Mechanical energy · Electrical energy