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- 1. Multiple Choice
What is a Wind vane used for?
Helps the wind to flow
Makes the air clean
To show the direction of wind
Creates wind
- 2. Multiple Choice
What is the layer of air that surround Earth known as?
Respiration
Atmosphere
Altitude
- 3. Multiple Choice
How much percentage of Oxygen is present in the air?
22%
20%
31%
21%
- 4. Multiple Choice
What is Humidity
The amount of water vapour present in air
The amount of oxygen present in air
More heat in the atmosphere
- 5. Multiple Choice
Mountaineers carry _________ cylinders with them, while climbing mountains.
Nitrogen
Oxygen
Carbon dioxide
Argon
- 6. Multiple Choice
The burning of fuel produces ______.
Dust
Wind
Smoke
Gas
- 7. Multiple Choice
What gas in the air is causing global warming?
Nitrogen
Oxygen
Carbon Doixide
Argon
- 8. Multiple Choice
Choose odd one out
Breeze,Dust,Gale,Storm
Gale
Dust
Breeze
- 9. Multiple Choice
We can live without air.
True
False
- 10. Multiple Choice
Why do plants need air?
Plants need air to breathe
Plants need air to sleep
Plants need air to smell
- 11. Multiple Choice
Air is a mixture of many _________
solids
liquids
gases
- 12. Multiple Choice
Which is not a property of air?
It occupies space.
It is transparent.
It is a solution.
It is a compound.
- 13. Multiple Choice
________% of carbon dioxide is present in the atmosphere.
98%
78%
1%
0.03%
- 14. Multiple Choice
Moving air is called_____
Breeze
Wind
Storm
- 15. Multiple Choice
Air is present
in atmosphere
in soil
in water of ponds, lakes and seas
everywhere
- 16. Multiple Choice
Air is
a mixture
a pure substance
an element
anything, that depends on the place where it is found
- 17. Multiple Choice
The main constituent of the air is.
nitrogen
oxygen
carbon dioxide
hydrogen
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