EASY
8th CBSE
IMPORTANT
Earn 100

The amount of heat liberated when one kilogram of a fuel is completely burnt in sufficient supply of oxygen is called of the fuel.

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Important Questions on Combustion and Flame

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q B
Name one unit in which the heat liberated by a fuel is measured.
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q B
The lower the ignition temperature the better the fuel. True or false?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q B
What are the fine particles released on burning carbon-containing fuels called?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q C
What is combustion?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q C
Distinguish between combustible and non-combustible substances, giving three examples of each.
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q C
Why is it more difficult to burn some combustible substances than others?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q C
State the conditions under which combustion occurs.
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 6 - Combustion and Flame>EXERCISES>Q C
Why is more care needed to store kerosene than coal, though both are fuels?