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 biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Green house effect is due to the accumulation of

  1. $O _3$ and depletion of $CO _2$
  2. $O _3$ and $CO _2$
  3. $CO _2$ and depletion of $O _3$

  4. Green plants
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Carbon dioxide and ozone are called greenhouse gases due to their property of absorbing radiation and emitting heat, but the balanced effect depends upon the lifetime and longevity of these gases, Carbon dioxide has  increased in atmosphere due to increased burning of fossils, cutting of trees, Industrial application, trapping of heat waves can cause excessive heating of earth's temperature.
Ozone is naturally found in the stratosphere where it is constantly broken down by UV rays, but the burning of organic volatile compounds and emission of nitrogen oxides have led to the formation of the ozone layer in the atmosphere resulting in excessive trapping of heat
Hence, the correct answer is 'O$ _{3}$ and CO$ _{2}$'.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

One green house gas contributes $14\%$ to total global warming and another contributes $6\%$. These are respectively identified as

  1. $NO _2$ and $CO _2$
  2. CFC and $N _2O$
  3. Methane and $CO _2$

  4. Methane and CFCs
  5. CFCs and $CO _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The warming of earth's surface when sun radiations are absorbed and trapped in earth's atmosphere, is called greenhouse effect. The gases responsible for green house effect are called green house gases which trap the radiations and don't let them reflect back from the earth's surface. The green house gases are Chlorofluorocarbons (CFC's), Carbon dioxide (CO2), Methane (CH4) and Nitrous Oxide (N2O). 
The approximate percentage of different greenhouse gases in the atmosphere is:
CFCs - 14%
CO2 - 60%
‎CH4 - 20%
N2O - 6%
So, the correct answer is 'CFC and N2O'.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Green house effect is due to.

  1. Accumulation of $O _3$ and depletion of $O _2$
  2. Accumulation of $O _3$ and $CO _2$
  3. Depletion of $CO _2$ and $O _3$

  4. Accumulation of green plants
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The Greenhouse effect is a naturally occurring phenomenon that is responsible for heating of Earth's surface and atmosphere. It takes place due to accumulation of Ozone, Carbon dioxide, N$ _2$O, CFCs and methane in excess in atmosphere.
So, the correct answer is 'Option B- Accumulation of O$ _3$ and CO$ _2$'.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Which gas contributes most of green house effect?

  1. CFC

  2. Freon
  3. $CO _2$
  4. $CH _4$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Greenhouse effect can be defined as the trapping of the radiations of the sun by the atmospheric gases and the subsequent reflection on the earth's surface causing global warming. There are many greenhouse gases like water vapour, methane, CFCs etc. but carbon dioxide is the major concern because it has contributed to most of the global warming 1750 to 2011 as per IPCC data and it tends to accumulate in the atmosphere. It is released in greater amounts from the vehicular emissions, deforestation, industrial emissions etc. so it constitutes around 81% of the greenhouse gases.

Hence, the correct answer is 'CO$ _{2}$'.

Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Heat that radiates back from green house gases (green house flux) causes

  1. Additional global warming

  2. Thermal inversion

  3. Eutrophication

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

Greenhouse gases such as carbon dioxide, methane, nitrous oxide, water vapours trap heat radiating from earth towards space making the earth warmer. The increased amount of these gases block Heat from escaping and they present in the earth's atmosphere for more than their expected period. Scientist attributes the cause of global warming to such semi-permanently existing gases 'forcing' climate change.

Hence, the correct answer is 'Additional global warming'.

Multiple choice

What are greenhouse gases?

  1. Gases like nitrogen, carbon, and methane get released from fossil fuels

  2. Nitrogen based chemicals, phosphorus based plant enhancer

  3. Sodium dioxide and potassium trioxide used in explosives

  4. Hydrogen gases used for fueling hydrogen-powered vehicles
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice

Which of the following is a greenhouse gas?

  1. Oxygen

  2. Nitrogen

  3. Carbon dioxide

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

Carbon dioxide is a primary greenhouse gas that traps heat in the atmosphere. Oxygen, Nitrogen, and Hydrogen do not have the same heat-trapping properties.

Multiple choice

The primary greenhouse gas responsible for global warming is:

  1. Carbon dioxide

  2. Methane

  3. Nitrous oxide

  4. Water vapor

  5. Ozone
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon dioxide is the primary greenhouse gas responsible for global warming as it traps heat in the Earth's atmosphere.

Multiple choice

What is the primary greenhouse gas emitted by human activities?

  1. Carbon Dioxide (CO2)

  2. Methane (CH4)

  3. Nitrous Oxide (N2O)

  4. Water Vapor (H2O)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon Dioxide (CO2) is the primary greenhouse gas emitted by human activities, primarily through the burning of fossil fuels.

Multiple choice

How do greenhouse gases contribute to global warming?

  1. By trapping heat in the Earth's atmosphere

  2. By reflecting sunlight back into space

  3. By increasing the Earth's albedo

  4. By causing the Earth's orbit to change
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Greenhouse gases trap heat in the Earth's atmosphere, causing the planet's temperature to rise.

Multiple choice

Which of the following is NOT a greenhouse gas?

  1. Carbon Dioxide (CO2)

  2. Oxygen (O2)

  3. Methane (CH4)

  4. Nitrous Oxide (N2O)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Oxygen (O2) is not a greenhouse gas.