EASY
8th CBSE
IMPORTANT
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The fire extinguisher is used to extinguish oil fires. (foam/ water)

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Important Questions on Combustion and Flame

EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Looking Back>Q 1
The zone that produces light in a candle flame is called the _____ zone. (luminous/ blue/ dark)
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Looking Back>Q 2
The unburnt carbon particles escaping from a candle flame form a black, powdery substance called _____. (Soot/ Coke)
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Looking Back>Q 3
The amount of heat evolved, in joules, when one kilogram of fuel is burnt completely, is called the _____ value of the fuel.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Looking Back>Q 5
_____ (Global warming, Pollution) can lead to the melting of polar ice.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q A
Which of the following conditions is not necessary for combustion?
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q A
Which of these methods will not extinguish the fire?
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q A
Which fuel need not burn with a flame?
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q A
The zone that produces bright light in a candle flame is the _____ zone.