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 business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Which of the following processes does not increase the amount of carbon dioxide in the air?

  1. Petrol burning

  2. Decay of vegetation

  3. Breathing

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

Photosynthesis, process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose. In so doing, photosynthesis provides the basic energy source for virtually all organisms. So, the correct option is "D" (Photosynthesis).

Multiple choice chemistry natural resources- air, water and land environmental impact: global warming green house effect geobiochemical cycle

Widely distributed hydrocarbon in the atmosphere of earth is :

  1. Butane

  2. Methane

  3. Smog

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

Methane is by far the most abundant hydrocarbon constituting about 40 to 80 % of total hydrocarbons present in the urban atmosphere.

 
Hydrocarbons predominate among the atmospheric pollutants because of their widespread use in fuels.

Therefore, option B is correct.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Global warming is due to greenhouse effect. The greenhouse gas include:

  1. $CO _2$

  2. Oxides of nitrogen

  3. Both a & b

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

Global warming is due to Green Effect due to increase in the concentration of $CO _2$ by human activities like burning fossil fuels.

( Global warming in the overall temperature of the Earth's atmosphere due to the greenhouse effect caused by the increased levels of $CO _2,CFCs$ and other pollutants. )

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Gases like methane, nitrous oxide and water vapour also contribute towards greenhouse effect, they are also called ___________.

  1. greenhouse gases

  2. green gases

  3. noble gases

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

Gases like methane, nitrous oxide and water vapour also contribute towards green house effect, they are also called greenhouse gases.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Which of the following conclusions are made on methane in natural environment?

  1. Methane is produced by methanogenesis in anoxic environment
  2. The concentration of methane is 0.1 to 1.0 $\mu M$ for surface waters of lake

  3. Methane produce in sediment bubbles and diffuses into the water column and is lost to the atmosphere, except during winter months

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

Naturally occurring methane is mainly produced by the process of methanogenesis. This multistep process is used by microorganisms as an energy source. The net reaction is:

$C{ O } _{ 2 }+8H++8{ e }^{ - }→C{ H } _{ 4 }+2{ H } _{ 2 }O$

Multiple choice biology air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Green house effect is mainly due to increase in the levels of:

  1. $O _{2}$
  2. $CO$
  3. $CO _{2}$
  4. $N _{2}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A layer of carbon dioxide present in the atmosphere prevents the infrared radiations (reflected by the Earth's surface) from going out in the atmosphere. This heats up the Earth's surface and results in green house effect.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Greenhouse effect is caused by:
i) accumulation of $O _{2}$ in the atmosphere
ii) depletion of $O _{3}$ layer
iii) accumulation of $CO _{2}$ in the atmosphere

  1. i and ii

  2. i only

  3. iii only

  4. i and iii
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Greenhouse effect:

  • The progressive heating up of the surface of the Earth is called the greenhouse effect or global warming.
  • $CO _2$ and $H _2O$ block a part of the heat (IR) emitted by the Earth and reflect it back. Due to this, the Earth's surface gets heated up.
  • 50% of $CO _2$ content of air can increase the surface temperature of the Earth by $3^oC$.
  • In addition to $CO _2$, the other greenhouse gases are $CFC$ (17%), $O _3$ (18%), $NO$ (4%) and water vapour (2%).

Multiple choice biology air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

The gases associated with the green house effect is:

  1. $CO _{2}$
  2. $O _{2}$

  3. methene
  4. $CO$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range. Increasing greenhouse gas emissions cause the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide and ozone