EASY
8th CBSE
IMPORTANT
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Oxygen is essential for combustion.

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Important Questions on Combustion, Fuels and Flame

EASY
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III
The minimum temperature at which a substance catches fire is its calorific value.
EASY
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III
Water and carbon dioxide are fire extinguishers. 
MEDIUM
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III
A yellow flame from a gas burner shows the complete burning of the fuel. 
EASY
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III

The temperature at which a fuel catches fire is called its ignition temperature.

MEDIUM
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III
Fossil fuels are an inexhaustible natural resource of fuel. 
EASY
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III
Fire extinguishers should be provided in all public places. 
MEDIUM
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III
It is the vapour form of fuel that catches flame. 
MEDIUM
8th CBSE
IMPORTANT
SCIENCE For Class VIII>Chapter 5 - Combustion, Fuels and Flame>EXERCISES>Q III
Amount of heat energy produced on complete combustion of a unit fuel is called its calorific value.