MEDIUM
8th CBSE
IMPORTANT
Earn 100

Soot is an example of suspended . (particulate matter / gaseous fuel)

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Important Questions on Combustion and Flame

MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q C
The ignition temperature of coal is high; hence it is easy to ignite.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q C
During an explosion, a large amount of gas is evolved.
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q C
Water should be used to extinguish a fire caused by electricity.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q C
Pouring water on a flame not only cools the burning substance but also cuts off the air supply.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q C
In a candle, wax melts and then burns. The change which results in the evolution of heat is the melting of wax.
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q C
In a candle flame, the innermost part is the hottest and the outermost part is the coolest zone.
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q C
Every combustible substance is a fuel.
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Exercises>Q C
Hydrogen gas has the highest calorific value among all fuels and it has no emissions other than water vapour.