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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
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-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
All the plants require nitrogen for:
(A)
Reproduction
(B)
Photosynthesis
(C)
Transpiration
(D)
Growth
Question-5
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-6
Which of the following gases cause the harmful green house effect?
(A)
Hydrogen
(B)
Oxygen
(C)
Carbon dioxide
(D)
Nitrogen
Question-7
Which of the following is combustible?
(A)
Oxygen
(B)
Carbon dioxide
(C)
Hydrogen
(D)
All of these
Question-8
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-9
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-10
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
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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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