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Environment & Ecology Previous Year Questions (PYQ) with Answers – Page 6

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Environment & Ecology questions asked in previous year papers of SSC, Banking, Railway and other exams, with the exam and year, answers and explanations.

368 previous-year questions

Q101.Environment & EcologyAsked in: Bihar · BPSC 69th CCE Pre, 30 Sep 2023Easy

Which of the following National Parks/Wildlife Sanctuaries are in Bihar?

1. Valmiki National Park

2. Dudhwa National Park

3. Gajner Wildlife Sanctuary

4. Bhimbandh Wildlife Sanctuary

Select the correct answer using the codes given below.

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

Valmiki National Park and Bhimbandh Wildlife Sanctuary are both in Bihar, while the other two are in other States. Valmiki National Park, with its tiger reserve, lies in West Champaran district in the far north-west of Bihar, along the Nepal border, where it adjoins Nepal's Chitwan National Park.

Q103.Environment & EcologyAsked in: UPSC Civil Services · Prelims GS Paper I, 28 May 2023Hard

Consider the following statements:

Statement-I: The soil in tropical rainforests is rich in nutrients.

Statement-II: The high temperature and moisture of tropical rain forests cause dead organic matter in the soil to decompose quickly.

Which one of the following is correct in respect of the above statements?

  1. A.Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I
  2. B.Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I
  3. C.Statement-I is correct but Statement-II is incorrect
  4. D.Statement-I is incorrect but Statement-II is correct
Show answer
Correct answer: D. Statement-I is incorrect but Statement-II is correct

Rainforest soil is actually poor in nutrients, even though the forest above it is the richest on land. Heat and heavy rain make dead leaves decompose within weeks, and the released nutrients are taken up almost at once by the dense roots and fungi of the trees.

Q104.Environment & EcologyAsked in: UPSC Civil Services · Prelims GS Paper I, 28 May 2023Medium

'Invasive Species Specialist Group' (that develops Global Invasive Species Database) belongs to which one of the following organizations?

  1. A.The International Union for Conservation of Nature
  2. B.The United Nations Environment Programme
  3. C.The United Nations World Commission for Environment and Development
  4. D.The World Wide Fund for Nature
Show answer
Correct answer: A. The International Union for Conservation of Nature

The Invasive Species Specialist Group (ISSG) is one of the expert groups of the IUCN's Species Survival Commission, and it manages the Global Invasive Species Database.

Q105.Environment & EcologyAsked in: SSC GD Constable · 10 Jan 2023, Shift 1Medium

Identify a way to reduce the pollution caused due to burning of fossil fuels

  1. A.By lowering the temperature of burning
  2. B.By increasing the efficiency of the combustion process
  3. C.By increasing the number of carbon molecules
  4. D.By decreasing the latent heat
Show answer
Correct answer: B. By increasing the efficiency of the combustion process

When coal, petrol or diesel burn with too little oxygen, the burning is incomplete and gives out carbon monoxide, soot and unburnt hydrocarbons, the worst pollutants from vehicles and power plants.

Q107.Environment & EcologyAsked in: CDS · CDS (II) 2023, 3 Sep 2023Medium

Which of the following statements about the 'Race to Zero Campaign' is/are correct?

1. One of the main objectives of the Race to Zero Campaign is to build momentum around the shift to a decarbonized economy.

2. It is related to the theory of Zero - Sum Game.

  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neither 1 nor 2
Show answer
Correct answer: A. 1 only

Statement 1 is true and statement 2 is false. Race to Zero is a global campaign backed by the United Nations and launched in 2020, ahead of the COP26 climate talks in Glasgow.

Q108.Environment & EcologyAsked in: NDA · NDA (II) 2023, 3 Sep 2023Medium

The green plants in a terrestrial eco-system absorb sunlight that falls on their leaves and convert it into food energy. The percentage of solar radiation absorbed by all green plants for the process of photosynthesis is about

  1. A.1%
  2. B.5%
  3. C.8%
  4. D.10%
Show answer
Correct answer: A. 1%

Green plants are the producers of a terrestrial ecosystem, and NCERT's Class 10 chapter Our Environment states that they capture about 1 percent of the energy of the sunlight that falls on their leaves and convert it into food energy through photosynthesis.

Q109.Environment & EcologyAsked in: NDA · NDA (I) 2023, 16 Apr 2023Easy

Which one of the following is not a main greenhouse gas?

  1. A.Water vapour
  2. B.Oxygen
  3. C.Carbon dioxide
  4. D.Methane
Show answer
Correct answer: B. Oxygen

A greenhouse gas is one whose molecules absorb the long-wave infrared radiation given off by the warm surface of the Earth and send part of it back, keeping the planet about 33 degrees Celsius warmer than it would otherwise be.

Q112.Environment & EcologyAsked in: CDS · CDS-II 2022, GKEasy

Which one among the following reports defines Sustainable Development as development that meets the needs of the present generation without compromising the ability of future generations to meet their own needs?

  1. A.Brundtland Report
  2. B.United Nations Human Development Report
  3. C.Agenda-21 of the Rio Earth Summit
  4. D.OECD Policy Brief (2006)
Show answer
Correct answer: A. Brundtland Report

This 1987 report gave the world the standard definition of sustainable development quoted in the question. The report, titled Our Common Future, was prepared by the World Commission on Environment and Development, set up by the United Nations in 1983.

Q113.Environment & EcologyAsked in: CDS · CDS-II 2022, GKEasy

The 'Ramsar Convention' relates to which one of the following areas ?

  1. A.Wetland preservation
  2. B.Promote afforestation
  3. C.Action plan on climate change
  4. D.Combat desertification
Show answer
Correct answer: A. Wetland preservation

The Ramsar Convention is the international treaty for the conservation and wise use of wetlands. It was signed on 2 February 1971 at Ramsar, a town in Iran on the Caspian Sea, and came into force in 1975.

Q114.Environment & EcologyAsked in: CDS · CDS-I 2022, GKHard

With reference to Bhindawas Wildlife Sanctuary, Sultanpur National Park, Thol Lake Wildlife Sanctuary and Wadhwana Wetland, which of the following statements is/are correct?

1. All of them are Ramsar sites.

2. All of them are naturally formed wetlands.

3. All of them are birding sites.

Select the correct answer using the code given below:

  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

Statement 1 is right: all four were declared Ramsar wetlands of international importance in 2021, Sultanpur and Bhindawas in Haryana, and Thol and Wadhwana in Gujarat.

Q115.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IEasy

Consider the following :

1. Carbon monoxide

2. Nitrogen oxide

3. Ozone

4. Sulphur dioxide

Excess of which of the above in the environment is/are cause(s) of acid rain ?

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

Nitrogen oxides and sulphur dioxide are the two gases that turn rain acidic. When coal and oil burn in power plants, factories and vehicles, they release sulphur dioxide and nitrogen oxides into the air.

Q116.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IHard

With reference to Indian laws about wildlife protection, consider the following statements : 1. Wild animals are the sole property of the government. 2. When a wild animal is declared protected, such animal is entitled for equal protection whether it is found in protected areas or outside. 3. Apprehension of a protected wild animal becoming a danger to human life is sufficient ground for its capture or killing. Which of the statements given above is/are correct?

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

Under the Wildlife (Protection) Act, 1972, wild animals belong to the government and a protected animal is protected everywhere, but mere fear of danger does not justify killing it.

Q117.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IEasy

Which one of the following best describes the term "greenwashing" ?

  1. A.Conveying a false impression that a company's products are eco-friendly and environmentally sound
  2. B.Non-inclusion of ecological/ environmental costs in the Annual Financial Statements of a country
  3. C.Ignoring the disastrous ecological consequences while undertaking infrastructure development
  4. D.Making mandatory provisions for environmental costs in a government project/programme
Show answer
Correct answer: A. Conveying a false impression that a company's products are eco-friendly and environmentally sound

Greenwashing is misleading green marketing. The word joins "green" with "whitewashing", which means covering up faults.

Q118.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IMedium

Which one of the following has been constituted under the Environment (Protection) Act, 1986 ?

  1. A.Central Water Commission
  2. B.Central Ground Water Board
  3. C.Central Ground Water Authority
  4. D.National Water Development Agency
Show answer
Correct answer: C. Central Ground Water Authority

It is the only one of the four set up as an authority under the Environment (Protection) Act, 1986. The Central Ground Water Authority (CGWA) was constituted in 1997 under Section 3(3) of the Act, following a Supreme Court direction in the M.C.

Q119.Environment & EcologyAsked in: CDS · CDS-I 2022, GKEasy

Which of the following is/are the function(s) of environment?

1. Supplying resources

2. Sustaining life

3. Providing aesthetic services

Select the correct answer using the code given below :

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

Supplying resources, sustaining life and providing aesthetic services are all functions of the environment. The environment is the total of all the living and non-living things around us.

Q120.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IEasy

The "Miyawaki method" is well known for the:

  1. A.Promotion of commercial farming in arid and semi-arid areas
  2. B.Development of gardens using genetically modified flora
  3. C.Creation of mini forests in urban areas
  4. D.Harvesting wind energy on coastal areas and on sea surfaces
Show answer
Correct answer: C. Creation of mini forests in urban areas

The Miyawaki method grows dense, fast-growing native forests on small plots of land, which suits crowded cities. The method was developed by the Japanese botanist Akira Miyawaki.