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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

The Green House Effect is caused by an excess of?

  • Carbon dioxide
  • Carbon monoxide
  • Carbon tetrachloride
  • None of the above
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Correct Answer: A. Carbon dioxide

Explanation:

The greenhouse effect is a natural phenomenon that keeps the Earth ... Read More Details

2 Environmental Science MCQs

Equator passes through one of these countries ___________?

  • Saudi Arabia
  • Italy
  • Japan
  • None
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Correct Answer: D. None

Explanation:

The Equator is an imaginary line that circles the Earth, dividing ... Read More Details

3 Environmental Science MCQs

Basha Dam is to be constructed on ___________?

  • River Sutlaj
  • River Jhelum
  • River Chenab
  • None (On Indus River in Gilgit-Baltistan)
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Correct Answer: D. None (On Indus River in Gilgit-Baltistan)

Explanation:

Basha Dam, officially called Diamer-Bhasha Dam, is a large-scale ... Read More Details

4 Environmental Science MCQs

The earth’s ___________ is divided into 15 major plates of various sizes.

  • Mesosphere
  • Stratosphere
  • Lithosphere
  • None
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Correct Answer: C. Lithosphere

Explanation:

The Earth's lithosphere is the rigid outermost layer of the planet, ... Read More Details

5 Environmental Science MCQs

Main culprit in thinning of ozone layer in stratosphere?

  • Carbon dioxide
  • Chlorofluorocarbons
  • Nitrogen oxides
  • Methane
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Correct Answer: B. Chlorofluorocarbons

Explanation:

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

6 Environmental Science MCQs

There are many types of frozen water on Earth. Collectively, they are called:

  • Hydrosphere
  • Cryosphere
  • Frigid Zone
  • Biosphere
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Correct Answer: B. Cryosphere

Explanation:

The cryosphere refers to all the frozen water parts of the Earth’s surface. ... Read More Details

7 Environmental Science MCQs

Which of the following source of energy is caused by uneven heating of Earth’s surface?

  • Wind
  • Solar
  • Biomass
  • None of these
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Correct Answer: A. Wind

Explanation:

Wind energy is a type of renewable energy that is produced by the ... Read More Details

8 Environmental Science MCQs

Global winds towards western direction are known as:

  • Trade winds
  • Western winds
  • Reynolds wind
  • None of these
0 Comments
Correct Answer: A. Trade winds

Explanation:

Global winds are large-scale wind patterns that blow steadily across the Earth’s surface ... Read More Details

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