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
What is the primary greenhouse gas emitted by human activities?
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Nitrogen Dioxide
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Carbon Dioxide
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Sulfur Dioxide
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Ozone
B
Correct answer
Explanation
Carbon dioxide (CO2) is the most significant greenhouse gas emitted by human activities, primarily from the burning of fossil fuels.
What is the term used to describe the total amount of greenhouse gases produced to directly and indirectly support human activities?
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Carbon Footprint
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Ecological Footprint
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Water Footprint
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Nitrogen Footprint
A
Correct answer
Explanation
Carbon footprint refers to the total amount of greenhouse gases produced to directly and indirectly support human activities, usually expressed in equivalent tons of carbon dioxide.
Which sector is the largest contributor to global carbon emissions?
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Transportation
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Industry
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Agriculture
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Residential and Commercial Buildings
B
Correct answer
Explanation
The industry sector, including manufacturing and construction, is generally the largest contributor to global carbon emissions, followed by transportation, agriculture, and residential and commercial buildings.
What is the main source of greenhouse gas emissions in most countries?
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Transportation
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Electricity generation
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Industrial activities
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Agriculture
B
Correct answer
Explanation
Electricity generation is the main source of greenhouse gas emissions in most countries, followed by transportation, industrial activities, and agriculture.
What are the main greenhouse gases?
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Carbon dioxide
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Methane
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Nitrous oxide
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All of the above
D
Correct answer
Explanation
The main greenhouse gases are carbon dioxide, methane, and nitrous oxide. These gases trap heat in the atmosphere, causing the planet to warm.
Which of the following is a greenhouse gas?
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Oxygen
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Nitrogen
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Carbon dioxide
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Argon
C
Correct answer
Explanation
Carbon dioxide is a greenhouse gas because it traps heat in the Earth's atmosphere, contributing to global warming.
Which of the following is NOT a greenhouse gas?
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Carbon dioxide
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Methane
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Oxygen
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Water vapor
C
Correct answer
Explanation
Oxygen is not a greenhouse gas because it does not absorb infrared radiation.
What is the primary greenhouse gas emitted by transportation activities?
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Carbon dioxide (CO2)
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Methane (CH4)
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Nitrous oxide (N2O)
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Hydrofluorocarbons (HFCs)
A
Correct answer
Explanation
Carbon dioxide (CO2) is the primary greenhouse gas emitted by transportation activities, accounting for over 70% of total transportation-related emissions. It is produced when fossil fuels, such as gasoline and diesel, are burned for transportation purposes.
Which sector of transportation contributes the most to greenhouse gas emissions globally?
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Road transportation
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Air transportation
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Rail transportation
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Water transportation
A
Correct answer
Explanation
Road transportation, which includes cars, trucks, and buses, is the largest contributor to greenhouse gas emissions from transportation globally. It accounts for over 70% of total transportation-related emissions, primarily due to the widespread use of fossil fuel-powered vehicles.
Which technology is commonly used to reduce greenhouse gas emissions from vehicles with internal combustion engines?
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Catalytic converters
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Diesel particulate filters
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Hybrid electric vehicles
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Battery electric vehicles
A
Correct answer
Explanation
Catalytic converters are devices that reduce harmful pollutants, including greenhouse gases, from the exhaust of vehicles with internal combustion engines. They work by converting these pollutants into less harmful substances, such as carbon dioxide and water vapor.
What is the primary greenhouse gas emitted by aircraft during flight?
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Carbon dioxide (CO2)
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Methane (CH4)
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Nitrous oxide (N2O)
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Water vapor (H2O)
D
Correct answer
Explanation
Water vapor (H2O) is the primary greenhouse gas emitted by aircraft during flight. It is produced as a byproduct of the combustion of jet fuel and contributes to the formation of contrails, which can have a warming effect on the climate.
What is the primary greenhouse gas emitted by the transportation sector?
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Carbon Dioxide (CO2)
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Methane (CH4)
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Nitrous Oxide (N2O)
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Hydrofluorocarbons (HFCs)
A
Correct answer
Explanation
Carbon Dioxide (CO2) is the primary greenhouse gas emitted by the transportation sector, accounting for around 23% of global CO2 emissions.
What is the primary greenhouse gas emitted by human activities?
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Carbon dioxide
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Methane
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Nitrous oxide
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Fluorinated gases
A
Correct answer
Explanation
Carbon dioxide is the primary greenhouse gas emitted by human activities, primarily from the burning of fossil fuels for energy production and transportation.
Which of the following is a greenhouse gas with a high global warming potential?
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Carbon dioxide
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Methane
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Nitrous oxide
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Fluorinated gases
D
Correct answer
Explanation
Fluorinated gases, such as hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs), have high global warming potentials, meaning they trap heat more effectively than carbon dioxide.
What is the primary source of methane (CH4) emissions?
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Agriculture
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Landfills
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Natural gas production
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All of the above
D
Correct answer
Explanation
Methane emissions come from various sources, including agriculture (livestock and rice cultivation), landfills, and natural gas production and distribution.