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- 1. Multiple Choice
Earth is surrounded by an envelope of gases called the _____________.hydrospheresolar systematmospherecloud bubble - 2. Multiple ChoiceWhich of these do plants need in order to make food?argoncarbon dioxidenitrogenoxygen
- 3. Multiple ChoiceWhich of these makes up about 21 percent of the atmosphere?argoncarbon dioxidenitrogenoxygen
- 4. Multiple Choice_________________ is the most abundant gas in our atmosphere.ArgonOxygenCarbon DioxideNitrogen
- 5. Multiple Choice
The burning of fuel produces ______.
Dew
Wind
Smoke
- 6. Multiple Choice
___________ gas is necessary for burning
Oxygen
Nitrogen
Carbon dioxide
- 7. Multiple Choice
Which gas is released into the atmosphere by plants following photosynthesis?
Oxygen
Argon
Carbon dioxide
Nitrogen
- 8. Multiple Choice
What layer protects us from the sun's harmful rays?
Protection layer
Ozone layer
Atmospheric layer
- 9. Multiple Choice
______ from cars makes the air dirty.
Smell
Smoke
Smoge
- 10. Multiple Choice
The component of air used by green plants to make their food, is ___________.
Ozone layer
Carbon di-oxide
Hydrogen
Argon
- 11. Multiple Choice
Look at the photo. This is an example of _____ pollution.
Water
Air
Land
- 12. Multiple Choice
Air takes up __________
Water
Weight
Space
- 13. Multiple Choice
We can ______ the air.
Feel
Touch
Smell
- 14. Multiple Choice
Wind is
air around us
rising hot air
air in motion
none of these
- 15. Multiple Choice
Air is present
in atmosphere
in soil
in water of ponds, lakes and seas
everywhere
- 16. Multiple Choice
The envelope of air that surrounds the earth is called ________
atmosphere
hydrosphere
lithosphere
- 17. Multiple Choice
Air is a mixture of many _________
solids
liquids
gases
- 18. Multiple Choice
Which gas do fire extinguishers contain?
Helium
Carbon-Dioxide
Hydrogen
Nitrogen
Oxygen
- 19. Multiple Choice
Which gas to plants breathe?
Carbon- Dioxide
Hydrogen
Oxygen
Nitrogen
- 20. Multiple Choice
Apart from Nitrogen, which is the other major gas present in the air.
Nitrogen
Hydrogen
Water Vapour
Oxygen
- 21. Multiple Choice
Arrange the following in descending order according to their percentage:
Nitrogen, Argon, Carbon dioxide, Oxygen
Nitrogen > Argon > Oxygen > Carbon dioxide
Nitrogen > Oxygen > Argon > Carbon dioxide
Oxygen > Carbon dioxide > Nitrogen > Argon
Argon > Carbon dioxide
- Answer choicesTagsAnswer choicesTags