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Question-1
Which gas helps in burning?
(A)
Nitrogen
(B)
Oxygen
(C)
Carbon dioxide
(D)
Carbon monoxide
Question-2
Air is present in
(A)
atmosphere
(B)
soil
(C)
water of ponds, lakes and seas
(D)
everywhere
Question-3
The ratio of nitrogen to oxygen in the air is
(A)
1 : 4
(B)
4 : 1
(C)
3 : 1
(D)
1 : 2
Question-4
Envelope of air that surrounds the earth is known as
(A)
biosphere
(B)
atmosphere
(C)
environment
(D)
ecosystem
Question-5
The main constituent of the air is
(A)
nitrogen
(B)
oxygen
(C)
carbon dioxide
(D)
hydrogen
Question-6
Air is
(A)
mixture
(B)
pure substance
(C)
an element
(D)
depends on the place where it is found
Question-7
Which gas we use in breathing?
(A)
Carbon dioxide
(B)
Nitrogen
(C)
Oxygen
(D)
None of these
Question-8
What is wind?
(A)
Air around us
(B)
Rising hot air
(C)
Air in motion
(D)
None of these
Question-9
Major part of the air is constituted by
(A)
nitrogen
(B)
oxygen
(C)
carbon dioxide
(D)
inert gases
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Std 6
CBSE
Practice in Related Chapters
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Living Organisms and their Surroundings
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Electricity and Circuit
Fun with Magnets
Changes Around Us
Sorting Materials into Groups
Separatlon of Substances
Garbage In, Garbage Out
Water
Air Around Us
Motion and Measurement of Distance
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