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Environmental Science MCQs

Prepare effectively for environmental and general science sections in job and academic exams with our expertly compiled Environmental Science MCQs. These multiple-choice questions cover critical topics such as ecosystems, biodiversity, pollution, climate change, renewable energy, environmental laws, waste management, ozone depletion, greenhouse effect, water and air quality, sustainability, and natural resources. These MCQs are especially useful for candidates applying through PPSC, FPSC, CSS, NTS, SPSC, BPSC, KPSC, ETEA, AJKPSC, and other public testing commissions. Ideal for exams related to environmental officer posts, science education, forestry, and public health sectors.

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1 Environmental Science MCQs

What is the main cause of earthquakes?

  • Landslide
  • Eruption of volcanoes
  • Movement of tectonic plates
  • All of these
0 Comments
Correct Answer: D. All of these

Explanation:

Earthquakes are sudden vibrations or shaking of the Earth's surface caused by the ... Read More Details

2 Environmental Science MCQs

What types of materials are released from a volcano during an eruption?

  • Solid, liquid, and gaseous
  • Solid and liquid
  • Solid and gaseous
  • None of these
0 Comments
Correct Answer: A. Solid, liquid, and gaseous

Explanation:

Volcanic eruptions are natural events where magma, gases, and other materials are expelled ... Read More Details

3 Environmental Science MCQs

Which type of clouds are the highest in the sky?

  • Cirrocumulus
  • Cirrus
  • Cirrostratus
  • All of these
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Correct Answer: D. All of these

Explanation:

Clouds are classified into different groups based on their altitude and appearance. The ... Read More Details

4 Environmental Science MCQs

What does a line on a map connecting points with the same atmospheric pressure represent?

  • Isobar
  • Isobath
  • Isohel
  • Isohyet
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Correct Answer: A. Isobar

Explanation:

A line on a map connecting points with the same atmospheric pressure is ... Read More Details

5 Environmental Science MCQs

Which instrument is used to determine the direction of cloud movement?

  • Nephoscope
  • Stethoscope
  • Metroscope
  • None of the above
0 Comments
Correct Answer: A. Nephoscope

Explanation:

A nephoscope is a specialized instrument used in meteorology to measure the direction ... Read More Details

6 Environmental Science MCQs

Which gas is not a greenhouse gas?

  • Methane
  • Nitrous oxide
  • Carbon dioxide
  • Hydrogen
0 Comments
Correct Answer: D. Hydrogen

Explanation:

Greenhouse gases are compounds in the atmosphere that trap heat from the sun, ... Read More Details

7 Environmental Science MCQs

Which metal causes air pollution in big cities?

  • Copper
  • Chromium
  • Lead
  • Cadmium
0 Comments
Correct Answer: C. Lead

Explanation:

Air pollution in big cities is a serious environmental problem, and certain metals ... Read More Details

8 Environmental Science MCQs

Composition of Ozone layer?

  • O₁
  • O₂
  • O₃
  • O₄
0 Comments
Correct Answer: C. O₃

Explanation:

The ozone layer is a region of Earth’s atmosphere that plays a vital ... Read More Details

9 Environmental Science MCQs

Which is the New & Most Important Culprit damaging the ozone Layer?

  • Carbon Dioxide
  • Chlorofluoro Carbons
  • Nitrous Oxide
  • Carbon Monoxide
0 Comments
Correct Answer: C. Nitrous Oxide

Explanation:

The ozone layer is a protective shield in the stratosphere that absorbs most ... Read More Details

10 Environmental Science MCQs

Most of the ozone in the atmosphere is concentrated in the _____________?

  • Mesosphere
  • Troposphere
  • Stratosphere
  • Ionosphere
0 Comments
Correct Answer: C. Stratosphere

Explanation:

The ozone layer is a region of Earth’s atmosphere that contains ... Read More Details

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