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 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.

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

Which of the following may be the cause of greenhouse effect?

  1. Burning of fossil fuel like coal in the industries for producing electricity.

  2. Burning of fossil fuel leads to high emissions of carbon di-oxide gas.

  3. Nitrous oxide, also a green house gas is produced during nylon and nitric acid production.

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

A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range. Greenhouse gases cause the greenhouse effect on planets. The primary greenhouse gases in Earth's atmosphere are water vapour $(H _2O)$, carbon dioxide $(CO _2)$, methane $CH _4)$, nitrous oxide $(N _2O)$ and ozone $(O _3)$. 

Carbon dioxide enters the atmosphere through burning fossil fuels (coal, natural gas, and oil), solid waste, trees and other biological materials, and also as a result of certain chemical reactions. Nitrous oxide is emitted during nylon and nytric acid production, agricultural and industrial activities, combustion of fossil fuels and solid waste, as well as during treatment of wastewater.

Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

Biogas contains

  1. $CH _4+CO+CO _2$
  2. $CH _4+CO _2+H _2$
  3. $CO+CO _2+H _2$
  4. $CO+CO _2+NO _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Biogas is a form of energy produced from anaerobic decomposition of waste material and organic matter. It is a renewable source of energy and a good alternative in place of fossil fuels which are depleting with time. Biogas is produced by methanogenic bacteria which breakdown organic matter in the absence of oxygen. They produce biogas which is a mixture of gases like methane (CH4), carbon dioxide (CO2) and hydrogen (H2) in different composition.
So, the correct answer is 'CH4 + CO2 + H2 '.
Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

Biogas contains

  1. $50-70\%$ methane
  2. $30-40\%$ methane

  3. Traces of methane
  4. $80-95\%$ ethane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Biogas is a form of energy produced from anaerobic decomposition of waste material and organic matter. Biogas is a mixture of gases like methane (CH4), carbon dioxide (CO2) and hydrogen (H2) in different composition as follows:
  • Methane 50- 75%
  • Carbon dioxide 25- 35%
  • Hydrogen 0 -1%
Apart from these gases, other gases like hydrogen sulphide and nitrogen are present in a small amount.
So, the correct answer is '50 - 70%'.
Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

Biogas consists of

  1. Carbon monoxide, methane and hydrogen.

  2. Carbon dioxide, methane and hydrogen.

  3. Carbon monoxide, ethane and hydrogen.

  4. Carbon dioxide, ethane and hydrogen.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biogas consists mostly of methane (CH$ _4$), carbon dioxide (CO$ _2$) and a mix of trace gases including nitrogen, hydrogen sulfide (H$ _2$S), hydrogen and others. Methane is the main constituent (63%) of the biogas. The other major constituent is CO$ _2$ (30%).

Thus, the correct answer is option B.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Among the following, which is not the component of coal gas?

  1. Methane

  2. Hydrogen

  3. Oxygen

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

Coal gas contains calorific gases like hydrogen, methane, carbon monoxide and many hydrocarbons and non-calorific gases like nitrogen and carbon dioxide.


The composition of coal gas varied according to the type of coal and the temperature of carbonisation. Typical figures were:

hydrogen 50%
methane 35%
carbon monoxide 10%
ethylene 5%


Hence, the correct option is $\text{C}$