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 environmental pollution primary air pollutants air pollution - types and sources not for breathing not for drinking

Which of the following gas is responsible for 'Global-Warming'?

  1. Methane

  2. Ozone

  3. Carbon-dioxide

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

Carbon-dioxide is responsible for 'Global-Warming.
A layer of $CO _2$ in the atmosphere traps the infrared radiation coming from earth's surface. These trapped radiations heat the earth's atmosphere which results in green house effect and global warming.

Multiple choice water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

Which is a green house gas?
A) Methane 

B) Chlorofluorocarbons 
C) $CO _{2}$

  1. $A$ and $B$
  2. $B$ and $C$
  3. $C$ and $D$
  4. $A, B$ and $C$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Greenhouse effect
* The progressive heating up of surface of the earth is earth is called green house effect or global warming.
 $CO _2$ and $H _2O$ block a part of the heat (IR) emitted by the earth & reflect back. Due to this earth surface gets heated up.
 50% in $CO _2$ content of air can increase the surface temperature of the earth by $3^oC$.
* In addition to $CO _2$ , the other green - house gases are CFCs (17%), $O _3$ (18%), NO (4%), water vapour (2%).

Multiple choice commercial applications global environmental change ozone and its depletion ozone layer ozone layer depletion and causes

Result of ozone hole is 

  1. UV radiation reaching earth

  2. Green house effect

  3. Acid rain

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

Ozone layer is present in the stratosphere which absorbs the harmful ultraviolet radiation Ultraviolet rays cause heritable mutational changes. They have the capability to destroy plants and animals and can cause skin cancer, cataracts to human beings. Existence of life on earth is possible only because of the presence of ozone layer around the earth. The main cause of the ozone hole was found to be gases that contained chlorofluorocarbons (CFCs), halons and freons. Found commonly in aerosol cans and released by many electronic appliances, these decrease the level of ozone in the stratosphere. All of these gases contain chlorine, which is a major cause behind the thinning of the ozone layer. The presence of chlorine within CFCs break down the ozone gases in ozone layer which increases the chances of ozone depletion. CFCs have accounted for about 80% of ozone depletion. 

Multiple choice chemistry air and atmosphere carbon dioxide - an oxide of carbon component of air - carbon dioxide oxides of non metal

Carbon dioxide exists in Earth's atmosphere as a:

  1. Metal

  2. Solid

  3. Trace gas

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

Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about $0.04$ percent $\left(400   ppm\right)$ by volume. A trace gas is a gas which makes up less than $1$% by volume of the Earth's atmosphere.

Multiple choice introduction to natural resources natural resources- air, water and land land air chemistry

Greenhouse effect occurs in

  1. Mesosphere

  2. Troposphere

  3. Ionosphere

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The atmosphere is made up of five layers mainly, exosphere, thermosphere, mesosphere, stratosphere and troposphere. The troposphere is about 12 km thick and is found at ground level. Living organisms are found in this layer. Most of the human activities take place in this region as this is the region where human beings live. The percentage of poisonous gas like carbon dioxide, nitrogen oxide etc.  increases due to burning of fossil fuels which do not allow the heat to escape from the earth atmosphere and leads to increase in temperature and cause global warming.
So, the correct option is B.
Multiple choice components and importance of food science of kitchen evs

Which gas is present predominantly in biogas?

  1. Methane

  2. Ethane

  3. Butane

  4. Propane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Biogas is a mixture of gases produced by the breakdown of organic matter in the absence of oxygen. It is produced by anaerobic digestion with methanogen or anaerobic organisms, which digest material inside a closed system, or fermentation of biodegradable materials.
  • Biogas is primarily methane ($CH _4$) and carbon dioxide ($CO _2$) and may have small amounts of hydrogen sulfide ($H _2$S), moisture and siloxanes.
  • Hence Methane is present predominantly in biogas.
  • So, the correct answer is 'Methane'.
Multiple choice components and importance of food science of kitchen evs

Biogas consists of

  1. CO$ _2$, C$ _2$H$ _5$OH, H$ _2$
  2. CH$ _4$, CO$ _2$, H$ _{2}$
  3. CH$ _{4}$, SO$ _{2}$, H$ _{2}$
  4. C$ _{2}$H$ _6$, CO, H$ _{2}$
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%).
Hence, option B is correct.

Multiple choice chemistry nature of things objects that float or sink substances that sink or float soluble and insoluble substances

______ is the chief component of natural gas.

  1. Ethane

  2. Methane

  3. Propane

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

Natural gas is a fossil fuel. It is used for cooking, heating and electricity generation. It is found deep underground rock formation. It is a naturally occurring hydrocarbon gas mixture consisting primarily of methane. It is also used as fuel for vehicles.

Multiple choice physics sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy biogas environmental use of microorganism microbes in waste treatment and biogas

Which of the following is released from biomass?

  1. Cow-dung

  2. Methane

  3. Oxygen

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

Major gases released from biomass are methane ($CH _4$), carbon dioxide ($CO _2$), hydrogen ($H _2$) and hydrogen sulphide ($H _2S$).

Multiple choice geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

Global warming mainly caused by ___________.

  1. greenhouse gases

  2. global gases

  3. green gases

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

The greenhouse is the body which allows the shortwave incoming solar radiation to come but does not allow the longwave outgoing terrestrial infrared radiation to escape. Carbon dioxide, water vapour etc are the main gases of the greenhouse. The amount of greenhouse gases is increasing day by day which causes the increase of the temperature of the earth. In this way, global warming mainly caused by greenhouse gases.

Multiple choice geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

Identify the primary cause of global warming.

  1. Emission of $CO _2$
  2. Emission of $O _2$

  3. Both a and b

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

Global warming refers to a gradual rise in atmospheric and ground surface air temperature. Emission of Carbon dioxide is one of the primary cause of global warming. As this gas allows the shortwave incoming solar radiation but does not allow the longwave outgoing terrestrial infrared radiation to escape. Thus an increase of carbon dioxide gas also increases in temperature of the earth which causes global warming.

Multiple choice geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

Which one of the following contributes to the greenhouse effect?

  1. Oxygen

  2. Nitrogen

  3. Argon

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

Carbon dioxide,

The major greenhouse gases (GHG’s) solely responsible for the greenhouse effect are Carbon dioxide, Ozone, Methane, and Water vapor. Although these gases comprise 1% of our atmosphere, they act like a thick warm blanket outside that surrounds this planet and regulate climate control. Greenhouse effect is not bad. In fact, it is needed for all of us to survive on planet Earth. In short, the greenhouse effect is nothing but a naturally occurring process designed by nature that aids in heating the earth’s surface and helps to maintain ecological balance.

Multiple choice geography environmental changes atmosphere as a green house global warming and climate change energy from the sun

Carbon dioxide and some other gases trap the heat radiated by the earth and cause ________.

  1. Global warming

  2. Ozone depletion

  3. Greenhouse effect

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

The greenhouse effect occurs when gases like carbon dioxide trap heat in the atmosphere, preventing it from escaping into space, which leads to warming.