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

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

Greenhouse gases are

  1. $CO _2$ and $CH _4$
  2. $N _2O$ and CFCs

  3. Ozone

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

Carbon dioxide and methane are naturally occurring gases. Nitrous oxides are formed due to denitrification and combustion of the fossil fuels. CFCs are used as refrigerants and propellants. Ozone is formed as a secondary pollutant. All these are greenhouse gases because they show greenhouse effect by absorbing the the long-wavelength infra-red radiations coming from the earth's surface and preventing from leaving the atmosphere. This effect is responsible for maintaining the ambient temperature on the earth. Their  amounts have increased over the past years and this has adversely affected the global temperature by raiding it. This is called global warming and is responsible for climate change. 

Hence, the correct answer is 'All of the above'

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

Which one of the following statements is not correct?

  1. The greenhouse gases trap out the heal in infra-red radiation

  2. Natural gas supplies five percent f global energy needs
  3. One molecule of CFC can trap as many as $10,000$ molecules of $CO _2$
  4. The atmospheric life time to $CFCl _3$ is estimated at $75$ years
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Natural gas actually supplies roughly 24 percent of global energy needs, making the statement that it supplies five percent incorrect. The other statements regarding greenhouse gases, CFC potency, and atmospheric lifetimes are factual.

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

Green house gases are called as such because they.

  1. Prevent the escape of heat waves reradiated from the earth's surface

  2. Are produced in greenhouses

  3. Are used in warming plant growth chambers
  4. Help in maintaining atmospheric $O _2$ and $CO _2$ balance
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Greenhouse gases are named for their ability to mimic the effect of a greenhouse, where glass allows sunlight in but traps the heat reradiated from the surface.

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

Which one of the following is major given house gas?

  1. Freon
  2. $CO _2$

  3. CFC
  4. $NO _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

greenhouse gases are those gases which absorb the heat or thermal infrared radiations of the sun and is responsible for an increase in the temperature of the earth's surface .there are several greenhouse gases that are produced either naturally or is being emitted in the atmosphere by a man-made source. The most abundant or major greenhouse gas is Carbon Dioxide.

so the correct answer is 'CO2'.

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

Multiple Choice Questions
Which one is correct percentage of green house gases

  1. Methane - $20\%$, $N _2O $- $18\%$
  2. CFCs -$14\%$, Methane - $20\%$
  3. $CO _2$ - $40\%$, CFCs -$30\%$
  4. $N _2O$ - $6\%. $ $CO _2$ - $86\%$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Relative concentration of various greenhouse gases in the atmosphere is as: CO$ _2$ (60%), CH$ _4$ (20%), CFCs (14%) and N$ _2$O (6%).

So, the correct answer is CFCs-14%, Methane 20%.

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

Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth's atmosphere?

  1. Oxygen and nitrogen

  2. Nitrogen and carbon dioxide

  3. Ozone and oxygen

  4. Water vapor and carbon dioxide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water vapor and carbon dioxide are the most significant contributors to the greenhouse effect in the Earth's atmosphere, with water vapor being the most abundant and CO2 being the most significant anthropogenic contributor.

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

The gas responsible for the greenhouse effect on Venus is:

  1. Carbon dioxide $(CO _{2})$
  2. Oxygen $(O _{2})$
  3. Ozone $(O _{3})$
  4. Nitrogen $(N _{2})$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Venus has a thick atmosphere composed primarily of carbon dioxide, which creates an extreme greenhouse effect, resulting in surface temperatures hot enough to melt lead.

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.