EASY
8th CBSE
IMPORTANT
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Bleaching powder is used for the purification of water.

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Important Questions on Pollution of Air and Water

EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 17 - Pollution of Air and Water>EXERCISES>Q 5
Eutrophication results in an increased level of dissolved oxygen in the water body.
EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 17 - Pollution of Air and Water>EXERCISES>Q 6

A greenhouse gas traps the heat of the sun and does not allow it to escape into space.

EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 17 - Pollution of Air and Water>EXERCISES>Q 2

Choose the right words:

Increasing concentration of greenhouse gases leads to _____. (ice age, global warming, volcanic eruptions)

EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 17 - Pollution of Air and Water>EXERCISES>Q 5
Disinfection of water in the municipal water treatment plant is done by _____.
EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 17 - Pollution of Air and Water>EXERCISES>Q 1
The ozone layer is affected by
EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 17 - Pollution of Air and Water>EXERCISES>Q 2
Global warming is caused by
EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 17 - Pollution of Air and Water>EXERCISES>Q 3
Disinfection of water can be done by
EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 17 - Pollution of Air and Water>EXERCISES>Q 4
Installation of tall chimneys for the exit of gases in thermal power plants helps in