EASY
8th CBSE
IMPORTANT
Earn 100

How are coke, coal tar and coal gas different from each other?

Important Questions on Combustion and Fossil Fuels

EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 5
What are the limitations of fossil fuels?
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 6
Write any two ways in which we can conserve fossil fuels.
HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 1
Draw a neat and labelled diagram of the candle flame.
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 2
What are the characteristics of a good fuel? Why is hydrogen not considered as the best fuel?
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 3
Draw a flow chart describing the process of formation of fossil fuels?
HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 4
What is fractional distillation? Explain.
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 5
Name any five air pollutants? Also, mention the harmful effects of each pollutants.
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 1
During a fire accident, when you are not supported with any fire extinguisher, it is advisable to evacuate the building and close the doors and windows. Why do you think we should close the doors and windows?