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

Multiple choice

Which of the following is a major source of greenhouse gas emissions in agriculture?

  1. Methane

  2. Carbon dioxide

  3. Nitrous oxide

  4. Ammonia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Methane, produced by livestock and rice cultivation, is a major source of greenhouse gas emissions in agriculture.

Multiple choice

What is the primary constituent of natural gas?

  1. Methane

  2. Ethane

  3. Propane

  4. Butane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Methane (CH4) is the main component of natural gas, typically comprising over 80% of its volume.

Multiple choice

What is the primary component of Liquefied Natural Gas (LNG)?

  1. Methane

  2. Ethane

  3. Propane

  4. Butane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

LNG primarily consists of methane, with small amounts of other hydrocarbons and impurities.

Multiple choice

What is the primary component of biogas?

  1. Methane

  2. Carbon Dioxide

  3. Hydrogen Sulfide

  4. Nitrogen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biogas primarily consists of methane, produced by the anaerobic decomposition of organic matter.

Multiple choice

What is the primary component of synthetic natural gas (SNG)?

  1. Methane

  2. Ethane

  3. Propane

  4. Hydrogen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Synthetic natural gas (SNG) primarily consists of methane, produced from various sources such as coal, biomass, or renewable energy.

Multiple choice

What is the primary greenhouse gas emitted during the combustion of natural gas?

  1. Carbon Dioxide

  2. Methane

  3. Nitrous Oxide

  4. Sulfur Dioxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The combustion of natural gas primarily releases carbon dioxide (CO2), a greenhouse gas contributing to climate change.

Multiple choice

What is the primary component of compressed natural gas (CNG)?

  1. Methane

  2. Ethane

  3. Propane

  4. Butane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Compressed natural gas (CNG) primarily consists of methane, stored at high pressure for use as a fuel.

Multiple choice

What is the primary component of natural gas?

  1. Carbon dioxide

  2. Methane

  3. Hydrogen

  4. Oxygen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Natural gas is a fossil fuel composed primarily of methane (CH4). Methane is a colorless, odorless, and flammable gas that is formed from the decomposition of organic matter in the absence of oxygen.

Multiple choice

What is the main greenhouse gas emitted by the combustion of fossil fuels?

  1. Oxygen

  2. Nitrogen

  3. Carbon dioxide

  4. Argon
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The combustion of fossil fuels releases various greenhouse gases, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). Carbon dioxide is the primary greenhouse gas emitted by the combustion of fossil fuels, contributing significantly to global warming and climate change.

Multiple choice

What is the main greenhouse gas emitted by hydropower projects?

  1. Carbon dioxide

  2. Methane

  3. Nitrous oxide

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydropower projects do not emit greenhouse gases during operation.

Multiple choice

Which greenhouse gas is the most significant contributor to climate change?

  1. Carbon dioxide

  2. Methane

  3. Nitrous oxide

  4. Hydrofluorocarbons
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon dioxide is the most significant contributor to climate change, accounting for approximately 60% of the total greenhouse gas emissions.

Multiple choice

Which greenhouse gas is primarily responsible for the observed increase in global temperatures, leading to sea level rise?

  1. Carbon Dioxide (CO2)

  2. Methane (CH4)

  3. Nitrous Oxide (N2O)

  4. Sulfur Dioxide (SO2)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon Dioxide (CO2) is the primary greenhouse gas contributing to global warming and subsequent sea level rise due to its high concentration and long atmospheric lifetime.

Multiple choice

Which of the following is NOT a major contributor to greenhouse gas emissions in the food system?

  1. Livestock production

  2. Food transportation

  3. Food processing

  4. Composting food waste
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Composting food waste actually reduces greenhouse gas emissions by diverting organic matter from landfills, where it would decompose and release methane.

Multiple choice

What is the primary role of wetlands in the global carbon cycle?

  1. Carbon sink

  2. Carbon source

  3. Carbon neutral

  4. Carbon dioxide producer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Wetlands act as carbon sinks, absorbing and storing carbon dioxide from the atmosphere, contributing to climate change mitigation.

Multiple choice

What is the primary greenhouse gas responsible for the majority of global warming?

  1. Carbon Dioxide (CO2)

  2. Methane (CH4)

  3. Nitrous Oxide (N2O)

  4. Water Vapor (H2O)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon Dioxide (CO2) is the primary greenhouse gas responsible for the majority of global warming, contributing significantly to the rise in Earth's average temperature.