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Question-1
Which of the following is combustible?
(A)
Oxygen
(B)
Carbon dioxide
(C)
Hydrogen
(D)
All of these
Question-2
Mountaineers carry oxygen cylinders with them because:
(A)
Oxygen supports combustion
(B)
Air becomes thinner as we go higher
(C)
Air is dense but lacks oxygen in mountains
(D)
They are unable to breathe in the air because of less gravity
Question-3
Glass panes usually appear hazy because:
(A)
Of chemical reactions
(B)
Water vapour settling on the tiny dust particles
(C)
It is property of all transparent substances
(D)
They are old
Question-4
The percentage of nitrogen in air is:
(A)
21%
(B)
0.1%
(C)
54%
(D)
78%
Question-5
Which of the following statement is true regarding earth's atmosphere?
(A)
It gets denser with increase in altitude.
(B)
It gets thinner with increase in altitude.
(C)
Its thickness is at least one fourth the radius of the earth.
(D)
It contains no solid particles.
Question-6
The correct ascending order of gases as per their composition in air is:
(A)
Oxygen < Carbon dioxide < Nitrogen
(B)
Hydrogen < Oxygen < Nitrogen
(C)
Nitrogen < Hydrogen < Oxygen
(D)
Oxygen < Carbon dioxide < Hydrogen
Question-7
Which of the following plays a very important role in the oxygen cycle ?
(A)
Birds
(B)
Animals
(C)
Plants
(D)
Soil
Question-8
Which of the following can show the direction of wind?
(A)
Anemometer
(B)
Wind vane
(C)
Wind mill
(D)
Barometer
Question-9
We can find tiny droplets of water on the outer surface of a steel glass containing cold water or ice. This shows that:
(A)
Steel contains air
(B)
Air contains water vapour
(C)
Cold water can seep through solids
(D)
Air contains ice.
Question-10
Lime water turns milky when exposed to air and stirred. This shows that air contains:
(A)
Carbon dioxide
(B)
Hydrogen
(C)
Nitrogen
(D)
Oxygen
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Cambridge Secondary Grade 6
IGCSE
Practice in Related Chapters
Sources of Food
Fibre to Fabrics
The Habitat of the Living
Body Movements in Animals
Things Around Us
Changes Around Us
Plants-Form and Function
Different Kind of Materials
Water
Components of Food
Fun with Magnets
Light, Shadow and Reflection
Separating Substances
Electric Current and Circuits
Waste Management
Air
Motion and Measurement of Distances
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