Environmental Studies ยท General Awareness
Greenhouse Gases and Atmosphere
1,328 Questions
Review important questions related to greenhouse gases, global warming, and atmospheric changes. The practice set focuses on identifying major pollutants and their environmental impact. These concepts are tested in the general awareness and environmental studies sections.
Greenhouse gas identificationGlobal warming processAtmospheric carbon dioxideMethane emissionsCement production emissions
Greenhouse Gases and Atmosphere Questions
A
Correct answer
Explanation
Carbon dioxide (CO2) is the primary greenhouse gas responsible for trapping heat in the atmosphere, leading to the greenhouse effect. Other gases listed, like Helium, do not contribute to this effect in the same way.
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Ozone
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Carbon dioxide
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Carbon monoxide
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Water vapour
B
Correct answer
Explanation
Carbon dioxide is the primary greenhouse gas emitted through human activities, such as burning fossil fuels. While water vapor is a greenhouse gas, carbon dioxide is the most significant contributor to the enhanced greenhouse effect.
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Methane
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Carbon dioxide
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Nitrous oxide
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Chlorofluorocarbons
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Methane
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Carbon dioxide
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Hydrogen
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Nitrous oxide
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None
C
Correct answer
Explanation
Hydrogen gas is highly flammable and burns in air. So it is not a greenhouse gas.
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Helium
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Oxygen
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Hydrogen
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Nitrogen
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Carbon dioxide
E
Correct answer
Explanation
This is the correct option. Carbon dioxide is the gas that causes global warming.
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Fungi
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Earthworm
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Bacteria
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Green plants
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CO2, Nitrous oxide and CFCs
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CO2, Nitrogen and oxygen
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NO2, O2 and CO2
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none of the above
A
Correct answer
Explanation
Greenhouse gases trap heat in the atmosphere. Carbon dioxide, nitrous oxide, and chlorofluorocarbons (CFCs) are well-known contributors to the greenhouse effect.
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Carbon dioxide
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Carbon
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Carbon monoxide
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None of these
A
Correct answer
Explanation
Carbon dioxide is the primary greenhouse gas emitted through human activities. It is a major contributor to global warming.
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Carbon dioxide
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Chloro fluoro carbon
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Carbon monoxide
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Freon
A
Correct answer
Explanation
Carbon dioxide is the most significant greenhouse gas emitted by human activities, primarily through the burning of fossil fuels.
A
Correct answer
Explanation
Carbon dioxide (CO2) is the primary greenhouse gas responsible for trapping heat in the atmosphere, contributing to the greenhouse effect.
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Methane
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Carbon monoxide
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Nitrogen dioxide
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Sulphur dioxide
A
Correct answer
Explanation
Biogas is primarily composed of methane (typically 50-75%) and carbon dioxide.
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Nitrogen and oxygen
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Nitrogen and carbon dioxide
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Nitrogen and carbon monoxide
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Carbon dioxide and carbon monoxide
A
Correct answer
Explanation
The Earth's atmosphere is composed primarily of nitrogen (about 78%) and oxygen (about 21%).
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CH4, CO
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CO2, CH4
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CH4, SO3
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CH4, SO2
B
Correct answer
Explanation
Carbon dioxide (CO2) and methane (CH4) are the primary greenhouse gases responsible for trapping heat in the Earth's atmosphere, leading to the greenhouse effect.
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Respiration
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Breathing
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Perspiration
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All of the above
A
Correct answer
Explanation
During respiration, organisms break down glucose and release carbon dioxide as a byproduct, which returns carbon to the atmosphere.
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carbon dioxide
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methane
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acetylene
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ethylene
B
Correct answer
Explanation
Gobar gas (biogas) is produced by the anaerobic digestion of organic matter and is composed primarily of methane.