EASY
8th CBSE
IMPORTANT
Earn 100

Ozone gas protects us from the harmful ultraviolet rays of the Sun. 

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Important Questions on Pollution of Air and Water

EASY
8th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 18 - Pollution of Air and Water>Exercise>Q 2

Oxygen and hydrogen are greenhouse gases.

EASY
8th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 18 - Pollution of Air and Water>Exercise>Q 3
Carbon dioxide reduces the oxygen carrying capacity of the blood. 
EASY
8th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 18 - Pollution of Air and Water>Exercise>Q 4
The process of nutrient enrichment and growth of plants on the surface of water bodies is called eutrophication.
EASY
8th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 18 - Pollution of Air and Water>Exercise>Q 5
Rainwater harvesting is a method of conserving water. 
MEDIUM
8th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 18 - Pollution of Air and Water>Exercise>Q 1
List the sources of air pollutants.
MEDIUM
8th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 18 - Pollution of Air and Water>Exercise>Q 2
How is air pollution harmful to living things?
EASY
8th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 18 - Pollution of Air and Water>Exercise>Q 3
What is greenhouse effect?
MEDIUM
8th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 18 - Pollution of Air and Water>Exercise>Q 4
What is global warming?