EASY
8th CBSE
IMPORTANT
Earn 100

What is reverse osmosis?

Important Questions on Pollution of Air and Water

EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 18 - Pollution of Air and Water>EXERCISE>Q 5
What are the sources of water pollution?
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 18 - Pollution of Air and Water>EXERCISE>Q 6
How does global warming affect seawater level?
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 18 - Pollution of Air and Water>EXERCISE>Q 1
Explain the process of eutrophication of a water source.
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 18 - Pollution of Air and Water>EXERCISE>Q 2
Suggest some ways to reduce air pollution.
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 18 - Pollution of Air and Water>EXERCISE>Q 3
Write a note on the effects of air pollution on human beings, plants, and animals.
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 18 - Pollution of Air and Water>EXERCISE>Q 4
Explain the steps involved in purification of water.
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 18 - Pollution of Air and Water>EXERCISE>HOTS (Higher Order Thinking Skills)
Electric vehicles are considered less polluting, but they use nickel and cadmium compounds in their batteries. Mining of these elements needs energy and leads to deforestation and pollution. Can you suggest a solution for this problem?
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 18 - Pollution of Air and Water>WORKSHEET

The given picture is of water treatment plant. Label the various stages in which the purification of water takes place.

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