What is fuel? Name its three types with examples.

Important Questions on Combustion and Fossil Fuels

EASY

8th CBSE

IMPORTANT

Science Now 8>Chapter 5 - Combustion and Fossil Fuels>EXERCISE>Q 4

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

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.