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CBSE Class 8 Chemistry Combustion and Flame (Easy)
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Question 1 of 10
1. Question
Fuel may be
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Question 2 of 10
2. Question
The amount of heat energy produced on complete combustion of ________fuel is called its calorific value.
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Question 3 of 10
3. Question
The substances which have very low ignition temperature and can easily catch fire with a flame are called
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Question 4 of 10
4. Question
When we heat water in a paper bowl over a candle, the paper does not catch fire because
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Question 5 of 10
5. Question
In combustion
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Question 6 of 10
6. Question
When oil or petrol catches fire, water is not used to extinguish it because
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Question 7 of 10
7. Question
A person caught fire on clothes is wrapped with blanket because
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Question 8 of 10
8. Question
Ignition temperature is
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Question 9 of 10
9. Question
Explosion takes place because of
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Question 10 of 10
10. Question
There are following zones of a flame
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