Environmental Studies · 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 zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

Green House effect is caused by

  1. Increase in $CO _{2}$
  2. Increase in $O _{2}$
  3. Decrease in $O _{2}$
  4. Decrease in $CO _{2}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The greenhouse effect is primarily driven by the accumulation of greenhouse gases in the atmosphere, which trap heat. Carbon dioxide (CO2) is the most significant anthropogenic greenhouse gas contributing to this effect.

Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

Which of the following green house gases trap more heat?

  1. Methane

  2. Nitrous oxide

  3. Carbon dioxide

  4. Trifluoro methyl sulphurpentafluoride
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Trifluoromethyl sulfur pentafluoride (SF5CF3) is an extremely potent greenhouse gas with a global warming potential thousands of times higher than carbon dioxide. While CO2 is the most abundant, this specific compound is significantly more effective at trapping heat per molecule.

Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

Gas being produced by paddy fields and involved in global warming is

  1. Chlorine

  2. Methane
  3. $CO _2$
  4. $H _2S$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The microbes in the paddy field respire and release the carbon dioxide. The increase in carbon dioxide increases the nearby temperature. This further results in the release of methane. Methane, in combination with carbon dioxide becomes a potent greenhouse gas. They trap the sun radiations, preventing them from reflecting back and falling on the earth's surface. This results in raising the overall global temperature. 

Hence, the correct answer is 'Methane'.

Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

Which green-house gas other than methane is being produced by agricultural fields?

  1. Nitrous oxide

  2. Ammonia

  3. Sulphur dioxide

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

Nitrous oxide is a powerful greenhouse gas produced by soil cultivation practices, especially the use of commercial organic fertilizers (including manure), biomass burning etc, This is done by a process of nitrification which converts the nitrogen in fertilizer to the production of nitrous oxide. The excessive use of the fertilizers thereby results in an increase in the nitrous oxide production.

Hence, the correct answer is 'Nitrous oxide'.

Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

$CO _2, CH _4, N _2O, CFCs$ are called green house gases because they can absorb

  1. Ultraviolet radiations

  2. Long wave infra-red radiations

  3. Visible light radiation

  4. X-ray radiation
  5. $\gamma$-ray radiation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The greenhouse gases are called so because they absorb the long wave infra-red radiations reflected from the earth's surface and trap them such that they do not get reflected back to space. This trapping of the long wave infra-red radiations causes an increase in the temperature of the atmosphere, called global warming. CO$ _{2}$, CH$ _{4}$, N$ _{2}$O, CFCs are the gases that are capable of showing greenhouse effect. These have increased in the concentration over the years due to the anthropogenic activities.

Hence, the correct answer is 'Long wave infra-red radiations'.

Multiple choice zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

What is relative contribution of $CO _2, CH _4$, CFC and $N _2O$ to global warming?

  1. $20\%, 14\%, 60\%, 6\%$
  2. $14\%, 6\%, 20\%, 60\%$
  3. $60\%, 20\%, 14\%, 6\%$
  4. $6\%, 14\%, 20\%, 60\%$
  5. $20\%, 60\%, 14\%, 6\%$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Global warming potential (GWP) is a measure of how much heat a greenhouse gas traps in the atmosphere up to a specific time horizon, relative to carbon dioxide. It compares the amount of heat trapped by a certain mass of the gas in question to the amount of heat trapped by a similar mass of carbon dioxide and is expressed as a factor of carbon dioxide an index of global warming potential for methane, carbon monoxide, nitrous oxide and CFCs relative to that of carbon dioxide. The major contribution is from CO$ _2$ (60%),CH$ _4$ (20%), CFC and N$ _2$O attributes to 14% and 6% respectively.

So the correct answer is '60%,20%,14%,6%'.

Multiple choice economics sustainable development with equity liberalisation objectives of economic planning in india need for sustainable development introduction to social movements and its types social movements

Greenhouse gases resulting in global warming of environment include which of the following gases?

  1. CO2

  2. CH4

  3. Nitrous oxide

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • Trapping of sun’s heat in the lower atmosphere due to increase in the pollution causing gases like carbon dioxide is called greenhouse effect.
  • Greenhouse gases are water vapour, carbon dioxide, methane and ozone, nitrous oxide etc.
  • Sun’s radiation is partly absorbed by earth and rest of the radiations are reflected back to the atmosphere which is escaped. But the greenhouse gases form a blanket in the atmosphere and traps the radiation from escaping. This causes an increase in earth’s temperature resulting in Global warming.

Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

Excess of carbon dioxide in the atmosphere leads to 

  1. Global warming

  2. Ozone depletion

  3. Acid rain

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

Modern human activities are responsible for the release of huge quantities of CO$ _2$ in the atmosphere. The major activities, which contribute towards this, are burning of fossil fuels and cultivation of the soil. Although CO$ _2$ is not considered as a pollutant, an increase in its proportion in the atmosphere can lead to global warming through increased greenhouse effect. 

Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

Environment is warmed up by

  1. Water vapour

  2. Methane
  3. $CO _2$

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The greenhouse effect is caused by the greenhouse gases. The gases methane, carbon dioxide, and water vapour trap the solar radiations which need to be reflected back to the atmosphere and increase the temperature of the earth. The greenhouse is considered as the direct cause of global warming.

Thus, the correct answer is option D. 

Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

Which of the following does not contributes to greenhouse effect?

  1. Carbon dioxide

  2. Carbon monoxide

  3. Chloro-fluoro carbon and Methane

  4. Refrigerant freon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Greenhouse gases are the compound in the atmosphere that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere. Popular of them are carbon dioxide, methane, chloro-fluoro carbon, nitrous oxide, freon and ozone while carbon monoxide is silent killer gas
So, the correct answer is option B.
Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

Which among the following gas is used as reference to calculate "Global Warming Potential (GWP)"?

  1. Carbon Dioxide

  2. Methane

  3. Ozone

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

Carbon dioxide (CO2) is used as the reference gas for Global Warming Potential (GWP) calculations, with a GWP value defined as 1. Other gases are measured relative to this baseline.

Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

Contribution of methane to global warming is 

  1. 6%

  2. 14%

  3. 20%

  4. 30%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The poisonous gases released in the environment traps the radiations on the earth and increases temperature which leads to global warming. Methane is a more potent greenhouse gas than $CO _2$, there is over 200 times more $CO _2$ in the atmosphere. For example $CO _2$ levels are 380 ppm (parts per million), while methane levels are 1.75 ppm. Hence, the amount of warming methane contributes is calculated at 20% of the warming $CO _2$ contributes.

Multiple choice physics energy production causes of greenhouse effect global warming adaptation in animals

Name the radiation which are absorbed by the green house gases.

  1. X-ray

  2. Ultraviolet

  3. Visible

  4. Infrared
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

    The short wavelength (high frequency) infrared radiations  come from sun to earth's surface and after reflection from surface , turn into long wavelength infrared radiations , these long wavelength radiations are absorbed by green house gases .

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

Which among the following is/are incorrect?

  1. Methane is more potent green house gas than $CO _2$

  2. Ruminants produce 80 million metric tons of methane annually.

  3. Global warming does not effect in agriculture and farming

  4. Methane is nearly 20 percentage responsible for global warming and 2/3 of methane is produced by animals.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Global warming could affect agriculture and farming in several ways.

  • Higher $CO _2$ levels can affect crop yields. 
  • More extreme temperature and precipitation can prevent crops from growing. 
  • Dealing with drought could become a challenge in areas where rising summer temperatures cause soils to become drier.
  • Many weeds, pests, and fungi thrive under warmer temperatures, wetter climates, and increased $CO _2$levels.
  • Though rising $CO _2$ can stimulate plant growth, it also reduces the nutritional value of most food crops.
  • Heat waves, which are projected to increase under climate change, could directly threaten livestock.
  • Global warming may increase the prevalence of parasites and diseases that affect livestock.
  • Drought may threaten pasture and feed supplies. Drought reduces the amount of quality forage available to grazing livestock.