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Question-1
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-2
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-3
In seas and oceans, a large number of plants, fishes and other animals live without air. How is this possible?
(A)
The plants and animals come to the surface in regular intervals.
(B)
Aquatic plants and animals do not need air to survive.
(C)
Water contains dissolved gases which enable them to live.
(D)
They survive because of the interdependence of plants and animals.
Question-4
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-5
Which of the following can show the direction of wind?
(A)
Anemometer
(B)
Wind vane
(C)
Wind mill
(D)
Barometer
Question-6
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-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
Which of the following are the uses of air?
(A)
Generating electricity
(B)
Disposal of seeds
(C)
Flying of birds
(D)
All of these
Question-9
Global warming is the result of the increase in:
(A)
Nitrogen in air
(B)
Oxygen in air
(C)
Water vapour in air
(D)
Carbon dioxide in air
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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