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- 1. Multiple Choice
What is the composition of air
79% Nitrogen , 18% Oxygen , 4% other
78% Nitrogen , 21% Oxygen , 1% other
771% Nitrogen , 24% Oxygen , 0.1% other
- 2. Multiple Choice
Air is ______ .
mixture of gases
everywhere and mixture of gases
- 3. Multiple Choice
Air doesn't occupies space .
True
False
- 4. Multiple Choice
Windmill rotates because of ______ .
Air
Water
Electricity
- 5. Multiple Choice
Does water enter in the bottle ?
yes
no
not sure
- 6. Multiple Choice
Air has not it's _____ and _______ .
Taste and smell
Visiblity and Taste
Visiblity and smell
not sure
- 7. Multiple Choice
Because of air the life is possible on the earth .
True
False
- 8. Multiple Choice
Water vapour is also present in air .
Yes
No
Not sure
- 9. Multiple Choice
Ball filled with air is heavier than squeezed ball . Which property is this ?
Air has weight
Air is compress able
not sure
- 10. Multiple Choice
Humans breathe ______ and plant breathe _______ .
CO2 ,O2
O2 ,CO2
H2O , CO2
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