How does ozone layer protect us from UV rays?

Important Questions on Pollution of Air and Water

MEDIUM

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 18 - Pollution of Air and Water>ASSESSMENT ZONE>Q E

How do oil spills affect marine life?

MEDIUM

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 18 - Pollution of Air and Water>ASSESSMENT ZONE>Q E

Name any four sources of water pollution?

MEDIUM

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 18 - Pollution of Air and Water>ASSESSMENT ZONE>Q E

Which phenomenon is responsible for global warming?

MEDIUM

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 18 - Pollution of Air and Water>ASSESSMENT ZONE>Q E

What do you understand by thermal pollution?

MEDIUM

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 18 - Pollution of Air and Water>ASSESSMENT ZONE>Q E

Name the chemical which is used for the purification of water?

HARD

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 18 - Pollution of Air and Water>ASSESSMENT ZONE>Q F

What are chlorofluorocarbons? How are they harmful to us?

MEDIUM

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 18 - Pollution of Air and Water>ASSESSMENT ZONE>Q F

What is acid rain? How is it caused? Mention Its harmful effects.

HARD

8th CBSE

IMPORTANT

Expanded Universal Science>Chapter 18 - Pollution of Air and Water>ASSESSMENT ZONE>Q F

What is smog? How is it harmful to us?