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Question-1
When animals and plants die and rot away or buried, they slowly form:
(A)
Fossil fuels
(B)
Limestone
(C)
Biomass
(D)
Ore
Question-2
Which of the following gases do termites significantly contribute to the atmosphere?
(A)
Methane
(B)
NO
2
(C)
CO
2
(D)
Water vapour
Question-3
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
Question-4
Plants get their nitrogen from nitrates in the:
(A)
Soil
(B)
Roots
(C)
Atmosphere
(D)
Sand
Question-5
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-6
Which of the following statements is true?
(A)
Since the gases in the air possess different melting point, they can be separated using the fractional distillation method .
(B)
Since the gases in the air possess different freezing point, they can be separated using the fractional distillation method .
(C)
Since the gases in the air possess different boiling point, they can be separated using the fractional distillation method .
(D)
Since the gases in the air possess different density, they can be separated using the fractional distillation method .
Question-7
Glucose + Oxygen → CO
2
+ H
2
O
Which process is this ?
(A)
Combustion
(B)
Photosynthesis
(C)
Respiration
(D)
Transpiration
Question-8
Plants get their nitrogen from nitrates in the:
(A)
Soil
(B)
Roots
(C)
Atmosphere
(D)
Sand
Question-9
Plants use carbon dioxide for photosynthesis. Animals use it to make their:
(A)
Skin
(B)
Shells
(C)
Cells
(D)
Hairs
Question-10
Percentage of carbon dioxide content in the atmosphere.
(A)
0.05
(B)
0.01
(C)
0.02
(D)
0.04
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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
How far? How fast?
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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