combustion and flame class 8
Authored by Anji Sharma
Science, Chemistry
8th Grade
Used 563+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following gases is used in combustion?
Hydrogen
Oxygen
Nitrogen
Carbon dioxide
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The burning of LPG is an example of
rapid combustion
spontaneous combustion
slow combustion
explosion
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Coal is an inflammable fuel.
True
False
4.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
The (a) zone of a candle flame, is the coldest.
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which of the sentences are correct?
The outermost part of a candle flame consist unburnt carbon particles.
All solid fuels have a higher calorific value than liquid and gaseous fuels
The heat produced by burning completely one kilogram of a given fuel, is known as the efficiency of that fuel.
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