EASY
8th CBSE
IMPORTANT
Earn 100

During incomplete combustion of a fuel gas is formed.

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Important Questions on Combustion and Flame

EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q II
A region of burning gases is called _____.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q II
The hottest region of a candle flame is called _____ zone. (luminous/non-luminous)
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q III
Oxygen is a combustible gas.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q III
A substance burns in air, when its temperature is below the ignition temperature.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q III
Coal is a renewable fuel.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q III
Carbon monoxide in the air causes acid rain.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q IV
Fossil fuels are preserved in the earth's crust.
EASY
8th CBSE
IMPORTANT
Learning Elementary Science with Online Support>Chapter 6 - Combustion and Flame>EXERCISES>Q IV
Burning of fossil fuels does not cause any problem.