Environmental Studies · General Awareness
Greenhouse Gases and Atmosphere
1,262 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
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Oxygen
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Chlorine
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Hydrogen
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Nitrogen
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Biogas
E
Correct answer
Explanation
Biogas is produced by anaerobic digestion with anaerobic bacteria or fermentation of biodegradable materials such as manure, sewage, municipal waste, green waste, plant material, and crops.
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80% and 85%
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89% and 95%
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70% and 75%
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95% and 99%
C
Correct answer
Explanation
The percentage of methane gas from a typical biogas plant varies between 70% and 75%.
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CH4 and N2
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CO2 and N2
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CH4 and CO2
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O2 and N2
C
Correct answer
Explanation
Gases responsible for greenhouse effect are methane and carbon dioxide, i.e. CH4 and CO2. Hence, option (3) is correct.
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carbon dioxide
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methane
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hydrogen
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ethane
B
Correct answer
Explanation
Biogas mainly contains methane. Carbon dioxide, hydrogen and ethane are not the main constituents of biogas. Hence, option (2) is correct.
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The increase in percentage of carbon monoxide in air causes global warming.
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The increase in percentage of carbon dioxide in air causes global warming.
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The increase in percentage of methane in air causes global warming.
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Both (2) and (3).
D
Correct answer
Explanation
The increase in percentage of CO2 and methane causes global warming and raises the temperature of the earth.
B
Correct answer
Explanation
Gases that trap heat in the atmosphere are called greenhouse gases. This gas is mainly carbon dioxide.
C
Correct answer
Explanation
A greenhouse gas is a gas in the atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. The main greenhouse gas is carbon dioxide.
B
Correct answer
Explanation
CO2 is a greenhouse gas because it traps some of the energy radiated by the earth and does not allow it to escape.
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Carbon dioxide allows the Earth to radiate heat rapidly at night.
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Percentage of carbon dioxide in air varies form 0.03% to 0.04%.
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Radon is not a cancer causing radioactive gas.
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A combustible substance combines with nitrogen to liberate heat energy.
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Methane
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Carbon monoxide
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Nitrogen dioxide
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Sulphur dioxide
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UV ray
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Visible ray
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Infrared ray
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All of the above
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Carbon dioxide
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Ozone
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Water vapour
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Methane
B
Correct answer
Explanation
Ozone is not a major greenhouse gas in the atmosphere. The primary greenhouse gases in Earth's atmosphere are water vapour, carbon dioxide, methane and nitrous oxide. In the Solar System, the atmospheres of Venus, Mars and Titan also contain gases that cause greenhouse effect.
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Marble
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Plants
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Pesticides
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Fossil fuels
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Vehicles
B
Correct answer
Explanation
Plants take up carbon dioxide during photosynthesis and give out oxygen.
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U.S.A. > China > India > Russia
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China > U.S.A. > India > Russia
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China > U.S.A. > Russia > India
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U.S.A. > China > Russia > India
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N2
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Water vapour
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Nitrous oxide
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Carbon dioxide
A
Correct answer
Explanation
In order, the most abundant greenhouse gases in Earth's atmosphere are:
Water vapour (H2O)
Carbon dioxide (CO2)
Methane (CH4)
Nitrous oxide (N2O)
Ozone (O3)
Nitrogen, oxygen and argon are non- green house gases.