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Question-1
Plants get their nitrogen from nitrates in the:
(A)
Soil
(B)
Roots
(C)
Atmosphere
(D)
Sand
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
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-4
Which of the following does the nitrogen fixation from the atmosphere in some plants?
(A)
Earthworm
(B)
Termites
(C)
Creatures
(D)
Bacteria
Question-5
During the process of photosynthesis, plants use energy from the:
(A)
Atmosphere
(B)
Sun
(C)
Fossils
(D)
Earth's crust
Question-6
Glucose + Oxygen → CO
2
+ H
2
O
Which process is this ?
(A)
Combustion
(B)
Photosynthesis
(C)
Respiration
(D)
Transpiration
Question-7
Which of the following produces carbon dioxide when it is heated in industry and when it moves back below the Earth's crust?
(A)
Ore
(B)
Fossil fuel
(C)
Sediments
(D)
Limestone
Question-8
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-9
Percentage of carbon dioxide content in the atmosphere.
(A)
0.05
(B)
0.01
(C)
0.02
(D)
0.04
Question-10
Which of the following is used to remove pesticides and some other dissolved substances in modern water treatment process?
(A)
Scrubber
(B)
Ozone
(C)
Filters
(D)
Lime
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Cambridge Secondary Grade 9
IGCSE
Practice in Related Chapters
Nature of Matter
Elements and Compounds
Acid,Base and Salts
Quantitative Chemistry
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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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