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Question-1
Smoke is an example of:
(A)
Liquid-in-gas mixture
(B)
Gas-in-solid mixture
(C)
Solid-in-gas mixture
(D)
Gas-in-liquid mixture
Question-2
Which of the following plays a very important role in the oxygen cycle ?
(A)
Birds
(B)
Animals
(C)
Plants
(D)
Soil
Question-3
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-4
It is not proper to breathe through our mouth because:
(A)
The dust particles would enter our bodies
(B)
More carbon dioxide will be inhaled
(C)
Our throat will become sore
(D)
We will catch cold easily
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
When we heat water, we can find bubbles coming from it. This shows that:
(A)
Air contains water
(B)
Water contains air
(C)
Hot water becomes bubbles
(D)
Water contains salts
Question-7
Which of the following plays an important part while drinking a liquid with a straw?
(A)
Humidity
(B)
Temperature
(C)
Atmospheric pressure
(D)
Composition of air
Question-8
The humidity of a place:
(A)
Lies between 10% to 20%
(B)
Is always more than 50%
(C)
Is always less than 80%
(D)
Varies from time to time
Question-9
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-10
The percentage of nitrogen in air is:
(A)
21%
(B)
0.1%
(C)
54%
(D)
78%
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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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