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GK QuizEnvironment & Ecology

Environment & Ecology Mixed Quiz: Set 44

  • 20 questions
  • 20 minutes
  • Difficulty: Medium
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About this quiz

Set 44 of the Environment & Ecology mixed quiz has 20 multiple-choice questions from 16 different topics of the subject: Ecosystem and Food Chains, Major Environmental Disasters: Bhopal, Chernobyl, Minamata and Others, Biodiversity and Its Conservation and more. 13 of them were asked in real previous-year papers. A topic quiz checks one chapter; this set revises the whole subject at once, the way an exam paper does, where the next question can come from any chapter. Every question carries an explanation of why the correct option is right and why the others are wrong. Keep to the timer, read the explanations at the end, and go back to the notes of any topic where you slipped.

Questions in this quiz

20 questions with answers and explanations

Q1.Environment & EcologyAsked in: CDS · CDS-II 2021, GKEasy

Which of the following limits the number of trophic levels in a food chain ?

  1. A.Deficient food supply
  2. B.Polluted air
  3. C.Decrease in the available energy at higher trophic levels
  4. D.Parasitic organisms
Show answer
Correct answer: C. Decrease in the available energy at higher trophic levels

Energy shrinks sharply at each step of a food chain, so after a few levels too little is left to support another level of consumers.

Q2.Environment & EcologyEasy

The Bhopal Gas Tragedy occurred on the night of:

  1. A.2-3 December 1984
  2. B.26 April 1986
  3. C.11 March 2011
  4. D.10 July 1976
Show answer
Correct answer: A. 2-3 December 1984

The leak at the Union Carbide India Limited plant in Bhopal began late on 2 December 1984 and the gas spread through the early hours of 3 December, which is why India observes 2 December as National Pollution Control Day.

Q4.Environment & EcologyMedium

The International Union for Conservation of Nature (IUCN) was founded in which year and at which place?

  1. A.1948, Fontainebleau, France
  2. B.1961, Morges, Switzerland
  3. C.1972, Stockholm, Sweden
  4. D.1992, Rio de Janeiro, Brazil
Show answer
Correct answer: A. 1948, Fontainebleau, France

IUCN was set up in 1948 at a conference held at Fontainebleau and was then called the International Union for the Protection of Nature; its headquarters later settled at Gland in Switzerland.

Q5.Environment & EcologyAsked in: CDS · CDS-I 2025, GKMedium

Which one among the following Biosphere Reserves is spread over three states in India?

  1. A.Dehang Debang
  2. B.Nilgiris
  3. C.Nokrek
  4. D.Seshachalam
Show answer
Correct answer: B. Nilgiris

The Nilgiri Biosphere Reserve spreads across Tamil Nadu, Kerala and Karnataka, meeting where the Western and Eastern Ghats join. Set up in 1986, the Nilgiri Biosphere Reserve was India's first biosphere reserve and in 2000 became the first in India to join UNESCO's World Network of Biosphere Reserves.

Q7.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IHard

Why is there a concern about copper smelting plants?

1. They may release lethal quantities of carbon monoxide into environment.

2. The copper slag can cause the leaching of some heavy metals into environment.

3. They may release sulphur dioxide as a pollutant.

Select the correct answer using the code given below.

  1. A.1 and 2 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: B. 2 and 3 only

Copper smelting is a concern for its sulphur dioxide emissions and for heavy metals leaching from its slag, not for lethal carbon monoxide.

Q8.Environment & EcologyMedium

Which of the following is NOT one of the eight missions of the National Action Plan on Climate Change?

  1. A.National Mission on Sustainable Habitat
  2. B.National Water Mission
  3. C.National Mission for Clean Ganga
  4. D.National Mission for a Green India
Show answer
Correct answer: C. National Mission for Clean Ganga

That body is the implementing arm of the Namami Gange programme for cleaning the river Ganga, created under the river conservation effort and not under the climate plan; its concern is pollution in one river basin rather than greenhouse gases.

Q9.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2024, GS Paper IMedium

With reference to perfluoroalkyl and polyfluoroalkyl substances (PFAS) that are used in making many consumer products, consider the following statements:

1. PFAS are found to be widespread in drinking water, food and food packaging materials.

2. PFAS are not easily degraded in the environment.

3. Persistent exposure to PFAS can lead to bioaccumulation in animal bodies.

Which of the statements given above are correct?

  1. A.1 and 2 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: D. 1, 2 and 3

All three statements are correct about PFAS, the so-called 'forever chemicals'. PFAS are a large family of man-made chemicals built on very strong carbon-fluorine bonds.

Q12.Environment & EcologyHard

The Intergovernmental Panel on Climate Change, which prepares the assessment reports used at the conferences, was established in 1988 by

  1. A.the World Meteorological Organization and the United Nations Environment Programme
  2. B.the Conference of the Parties to the UNFCCC
  3. C.the United Nations Security Council
  4. D.the World Bank and the International Monetary Fund
Show answer
Correct answer: A. the World Meteorological Organization and the United Nations Environment Programme

The panel was created in 1988, four years before the climate convention existed, which is why B is wrong: the IPCC is not an organ of the convention, although its reports set the agenda for every conference and the first assessment report of 1990 led directly to the negotiation of…

Q13.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2026, GS Paper IMedium

With respect to the Western Hoolock Gibbons, which of the following statements is/are correct?

1. A Sanctuary in North-east India is home to this ape species listed as Endangered in the International Union for Conservation of Nature (IUCN) Red List.

2. They have specialized brachiation and can easily swing between trees.

3. They possess a strong and heavy build like gorillas, yet are remarkably agile tree climbers.

Select the answer using the code given below :

  1. A.1 only
  2. B.1 and 2
  3. C.2 and 3
  4. D.3 only
Show answer
Correct answer: B. 1 and 2

The Western Hoolock Gibbon is an Endangered ape protected in a sanctuary in Assam, and it moves by swinging from branch to branch, but it is a light, slender animal, not heavily built like a gorilla.

Q15.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2017, GS Paper IMedium

In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation technique ?

1. It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.

2. Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.

3. Genetic engineering can be used to create microorganisms specifically designed for bioremediation.

Select the correct answer using the code given below :

  1. A.1 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: C. 1 and 3 only

Statements 1 and 3 are correct; heavy metals cannot be readily and completely removed by microbes. Bioremediation uses living organisms, mostly bacteria and fungi, to break down pollutants.

Q17.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IMedium

In the nature, which of the following is/are most likely to be found surviving on a surface without soil?

1. Fern

2. Lichen

3. Moss

4. Mushroom

Select the correct answer using the code given below.

  1. A.1 and 4 only
  2. B.2 only
  3. C.2 and 3
  4. D.1, 3 and 4
Show answer
Correct answer: C. 2 and 3

Lichens and mosses can live on bare rock, tree bark and walls without any soil, and they are the pioneer species of primary succession.

Q18.Environment & EcologyAsked in: UPSC CAPF · CAPF 2026, Paper IMedium

Which one among the following elements is not a part of the 'Panchamrit' of India's climate action presented at COP-26?

  1. A.Achieving 50 percent of its energy requirements from renewable energy by 2030
  2. B.Achieving the target of net zero emissions by 2047
  3. C.Reduction of the carbon intensity of the economy by 45 percent by 2030, over the 2005 levels
  4. D.Reduction of total projected carbon emissions by one billion tonnes by 2030
Show answer
Correct answer: B. Achieving the target of net zero emissions by 2047

India's net zero target announced at COP-26 is the year 2070, not 2047. At COP-26 in Glasgow in November 2021, Prime Minister Narendra Modi announced five commitments called the Panchamrit (five nectar elements).

Q19.Environment & EcologyAsked in: CDS · CDS-I 2026, GKEasy

Consider the following statements with reference to manure and organic farming: 1. Vermicompost is rich in organic matter and nutrients. 2. Biofertilizers and bio-pesticides are not used in organic farming. 3. Crop rotation is beneficial in controlling insects, pests and weeds. Which of the statements given above is/are correct?

  1. A.1 only
  2. B.1 and 3 only
  3. C.2 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: B. 1 and 3 only

Vermicompost is a nutrient-rich organic manure and crop rotation helps control pests and weeds, but organic farming does use biofertilizers and bio-pesticides.

Q20.Environment & EcologyEasy

The Fukushima Daiichi nuclear accident of 2011 was triggered immediately by:

  1. A.A failed safety test
  2. B.An earthquake and the tsunami that followed
  3. C.Sabotage of the control room
  4. D.A fire in the turbine hall
Show answer
Correct answer: B. An earthquake and the tsunami that followed

The Tohoku earthquake of 11 March 2011 shut the reactors down as designed, but the tsunami that arrived minutes later flooded the emergency diesel generators at the Fukushima Daiichi plant on Japan's Pacific coast.

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