MEDIUM
8th CBSE
IMPORTANT
Earn 100

Describe eutrophication.

Important Questions on Pollution of Air and Water

MEDIUM
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 16 - Pollution of Air and Water>Exercises>Q C
Describe an activity to show that alum helps the suspended particles of water to settle down.
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 16 - Pollution of Air and Water>Exercises>Q D
_____ is formed by the complete combustion of carbon. (Write the name of the compound)
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 16 - Pollution of Air and Water>Exercises>Q D
An increase in the CO2 level in the air causes the _____ effect.
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 16 - Pollution of Air and Water>Exercises>Q D
Sculptures, monuments and buildings are _____ by acid rain. (preserved / eroded)
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 16 - Pollution of Air and Water>Exercises>Q E
Which of the following affect(s) the ozone layer?
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 16 - Pollution of Air and Water>Exercises>Q E
The ozone layer in our atmosphere protects us from the bad effects of
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 16 - Pollution of Air and Water>Exercises>Q E
Which of the following is an oxygen-demanding waste?
EASY
8th CBSE
IMPORTANT
Basic Science for Class 8>Chapter 16 - Pollution of Air and Water>Exercises>Q E
Which of the following is/are used for disinfecting water?