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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

Which of the following water pollutants causes Minamata disease?

  • Methyl Mercury
  • Lead
  • Salmonella
  • Perchlorate
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Correct Answer: A. Methyl Mercury

Explanation:

Minamata disease is a severe neurological disorder caused by the consumption of fish ... Read More Details

2 Environmental Science MCQs

What is the process of converting wet waste into manure called?

  • Metabolism
  • Conservation
  • Incineration
  • Composting
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Correct Answer: D. Composting

Explanation:

Composting is the natural process of converting wet organic waste such as vegetable ... Read More Details

3 Environmental Science MCQs

What does the Greenhouse Effect mean?

  • Pollution
  • Prevention of ultraviolet rays
  • Trapping of solar energy due to atmospheric carbon dioxide
  • None of these
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Correct Answer: C. Trapping of solar energy due to atmospheric carbon dioxide

Explanation:

The Greenhouse Effect is a natural process in which the Earth’s atmosphere traps ... Read More Details

4 Environmental Science MCQs

In environmental science, the term “Dirty Dozen” refers to which of the following?

  • 12 most harmful greenhouse gases
  • 12 ozone-depleting substances
  • 12 persistent organic pollutants
  • None of the above
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Correct Answer: C. 12 persistent organic pollutants

Explanation:

In environmental science, the term “Dirty Dozen” refers to 12 persistent organic pollutants ... Read More Details

5 Environmental Science MCQs

Which ocean is known as the “Ring of Fire”?

  • Indian Ocean
  • Pacific Ocean
  • Atlantic Ocean
  • Antarctic Ocean
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Correct Answer: B. Pacific Ocean

Explanation:

The Pacific Ocean is known as the “Ring of Fire”, a term that ... Read More Details

6 Environmental Science MCQs

What is the main cause of a Tsunami?

  • Gravitational pull of the Moon
  • Low pressure in the ocean
  • Sea floor deformation & vertical water displacement
  • Sudden change in monsoon wind
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Correct Answer: C. Sea floor deformation & vertical water displacement

Explanation:

The correct answer is Sea floor deformation and vertical water displacement.


A ... Read More Details

7 Environmental Science MCQs

A state of stress caused by concern for the Earth’s environment is called what?

  • Eco-anxiety
  • Eco-fear
  • Eco-depression
  • Eco-alarm
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Correct Answer: A. Eco-anxiety

Explanation:

The correct answer is Eco-anxiety.


Eco-anxiety is a psychological state of stress, ... Read More Details

8 Environmental Science MCQs

What is the main cause of air pollution?

  • Burning of Fuels
  • Forests
  • Fertilizers
  • None of these
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Correct Answer: A. Burning of Fuels

Explanation:

Air pollution refers to the contamination of the atmosphere by harmful substances, making ... Read More Details

9 Environmental Science MCQs

Which of the following is a non-biodegradable material?

  • Dead Animals
  • Plastics
  • Bread
  • None of these
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Correct Answer: B. Plastics

Explanation:

Non-biodegradable materials are substances that do not decompose naturally through the action of ... Read More Details

10 Environmental Science MCQs

Which of the following is biodegradable?

  • Cans
  • Dead Plants
  • Glass
  • None of these
0 Comments
Correct Answer: B. Dead Plants

Explanation:

The term biodegradable refers to substances that can be broken down naturally by ... Read More Details

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