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Question-1
Plants use carbon dioxide for photosynthesis. Animals use it to make their:
(A)
Skin
(B)
Shells
(C)
Cells
(D)
Hairs
Question-2
Burning of petrol containing which of the following releases this toxic metal into the environment and can cause serious health hazards?
(A)
Chromium
(B)
Tin
(C)
Lead
(D)
Selenium
Question-3
With which of the following alkaline substance is acid gases from power stations passed through to make the escaping gases much less harmful?
(A)
Lime
(B)
Sodium hydroxide
(C)
Water
(D)
Aluminium hydroxide
Question-4
Glucose + Oxygen → CO
2
+ H
2
O
Which process is this ?
(A)
Combustion
(B)
Photosynthesis
(C)
Respiration
(D)
Transpiration
Question-5
Which of the following is caused by gases in the air, chiefly carbon dioxide and methane?
(A)
Photochemical smog
(B)
Acid rain
(C)
Global warming
(D)
Denitrification
Question-6
Photochemical smog is formed due to the release of which toxic gas?
(A)
Nitrogen dioxide
(B)
Carbon monoxide
(C)
Sulphur dioxide
(D)
Carbon dioxide
Question-7
Pollution in car exhausts can be controlled by using:
(A)
Fractional distillation
(B)
Catalytic converters
(C)
Scrubbers
(D)
Microstrainers
Question-8
Which of the following gases do termites significantly contribute to the atmosphere?
(A)
Methane
(B)
NO
2
(C)
CO
2
(D)
Water vapour
Question-9
Percentage of carbon dioxide content in the atmosphere.
(A)
0.05
(B)
0.01
(C)
0.02
(D)
0.04
Question-10
During the process of photosynthesis, plants use energy from the:
(A)
Atmosphere
(B)
Sun
(C)
Fossils
(D)
Earth's crust
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Cambridge Secondary Grade 9
IGCSE
Practice in Related Chapters
Nature of Matter
Elements and Compounds
Acid,Base and Salts
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Patterns and properties of Metals
Planet Earth
Introducing Chemistry
Mixtures and Separating Techniques
Particle Theory
Periodic Patterns
Chemical Change
Chemical Analysis and Experimentation
Patterns and Properties of Non-metals
Petrochemicals and Polymers
Industrial Inorganic Chemistry
Organic Chemistry
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