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12 questions
Which of the following gas helps in burning? ,
(a) Nitrogen
(b) Oxygen
(c) Carbon dioxide
(d) Carbon monoxide
A
B
C
D
Which of the following is NOT present in air?
(a) Oxygen
(b) Nitrogen
(c) Helium
(d) Iron
A
B
C
D
The components of air which is taken by Plants to prepare the food?
(a) O2
(b) N2
(c) CO2
(d) None of these
A
B
C
D
What are the users of Oxygen?
(a) Living being
(b) Combustion of fuel
(c) Rusting of iron
(d) All the above
A
B
C
D
The presence of water vapor is Air is important for
(a) Water Cycle
(b) Ozone layer
(c) Combustion
(d) None of the above
A
B
C
D
What is not true of Air?
(a) It is odorless and colorless
(b) It occupier space and has weight
(c) it can be compressed and stored
(d) None of these
A
B
C
D
Wind is
(a) air around us
(b) rising hot air
(c) air in motion
(d) none of these
A
B
C
D
Which property of air is shown in the image
Bottle is soluble in water
Air is dissolved in water
No air is present in water
None of the above
Which gas is produced by plants during photosynthesis?
(a) Nitrogen
(b) Carbon Dioxide
(c) Hydrogen
(d) Oxygen
A
B
C
D
__________ gas occupies the major part of composition of air.
Nitrogen
Oxygen
Carbon dioxide
What is air ?
A mixture
A pure substance
An element
Anything , that depends on the place where it is found
Mountaineers carry cylinders with them .
Carbon Dioxide
Nitrogen
Water
Oxygen
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