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Pollution & Waste Management

38 questions in Environment & Ecology.

Asked in 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2016, 2015, 2014, 2013

2025 · Q50Environment & EcologyPollution & Waste Managementmoderate

Consider the following statements : Statement I : Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries. Statement II : Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals. Statement III : Activated carbon can be easily synthesized from environmental wastes with high carbon content. Which one of the following is correct in respect of the above statements?

  1. (a)Both Statement II and Statement III are correct and both of them explain Statement I
  2. (b)Both Statement II and Statement III are correct but only one of them explains Statement I
  3. (c)Only one of the Statements II and III is correct and that explains Statement I
  4. (d)Neither Statement II nor Statement III is correct
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Official answer(a) Both Statement II and Statement III are correct and both of them explain Statement I

2024 · Q17Environment & EcologyPollution & Waste Managementeasy

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
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Official answer(d) 1, 2 and 3

2024 · Q22Environment & EcologyPollution & Waste Managementmoderate

Consider the following statements : Statement-I : Many chewing gums found in the market are considered a source of environmental pollution. Statement-II : Many chewing gums contain plastic as gum base. 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 explains Statement-I
  2. (b)Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I
  3. (c)Statement-I is correct, but Statement-II is incorrect
  4. (d)Statement-I is incorrect, but Statement-II is correct
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Official answer(a) Both Statement-I and Statement-II are correct and Statement-II explains Statement-I

2022 · Q44Environment & EcologyPollution & Waste Managementmoderate

In the context of WHO Air Quality Guidelines, consider the following statements : 1. The 24-hour mean of PM2.5 should not exceed 15 μg/m3 and annual mean of PM2.5 should not exceed 5 μg/m3. 2. In a year, the highest levels of ozone pollution occur during the periods of inclement weather. 3. PM10 can penetrate the lung barrier and enter the bloodstream. 4. Excessive ozone in the air can trigger asthma. Which of the statements given above are correct ?

  1. (a)1, 3 and 4
  2. (b)1 and 4 only
  3. (c)2, 3 and 4
  4. (d)1 and 2 only
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Official answer(b) 1 and 4 only

2021 · Q16Environment & EcologyPollution & Waste Managementmoderate

‘R2 Code of Practices’ constitutes a tool available for promoting the adoption of

  1. (a)environmentally responsible practices in electronics recycling industry
  2. (b)ecological management of ‘Wetlands of International Importance’ under the Ramsar Convention
  3. (c)sustainable practices in the cultivation of agricultural crops in degraded lands
  4. (d)‘Environmental Impact Assessment’ in the exploitation of natural resources
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Official answer(a) environmentally responsible practices in electronics recycling industry

2021 · Q25Environment & EcologyPollution & Waste Managementmoderate

Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants from which of the following? 1. Brakes of motor vehicles 2. Engines of motor vehicles 3. Microwave stoves within homes 4. Power plants 5. Telephone lines Select the correct answer using the code given below.

  1. (a)1, 2, 3 and 5 only
  2. (b)1, 2 and 4 only
  3. (c)3, 4 and 5 only
  4. (d)1, 2, 3, 4 and 5
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Official answer(b) 1, 2 and 4 only

2019 · Q59Environment & EcologyPollution & Waste Managementmoderate

As per the Solid Waste Management Rules, 2016 in India, which one of the following statements is correct?

  1. (a)Waste generator has to segregate waste into five categories.
  2. (b)The Rules are applicable to notified urban local bodies, notified towns and all industrial townships only.
  3. (c)The Rules provide for exact and elaborate criteria for the identification of sites for landfills and waste processing facilities.
  4. (d)It is mandatory on the part of waste generator that the waste generated in one district cannot be moved to another district.
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Official answer(c) The Rules provide for exact and elaborate criteria for the identification of sites for landfills and waste processing facilities.

2015 · Q11Environment & EcologyPollution & Waste Managementmoderate

What can be the impact of excessive/inappropriate use of nitrogenous fertilizers in agriculture? 1. Proliferation of nitrogen-fixing microorganisms in soil can occur. 2. Increase in the acidity of soil can take place. 3. Leaching of nitrate to the ground-water can occur. Select the correct answer using the code given below.

  1. (a)1 and 3 only
  2. (b)2 only
  3. (c)2 and 3 only
  4. (d)1, 2 and 3
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Official answer(c) 2 and 3 only

2015 · Q18Environment & EcologyPollution & Waste Managementmoderate

With reference to 'fly ash' produced by the power plants using coal as fuel, which of the following statements is/are correct? 1. Fly ash can be used in the production of bricks for building construction. 2. Fly ash can be used as a replacement for some of the Portland cement contents of concrete. 3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements. Select the correct answer using the code given below.

  1. (a)1 and 2
  2. (b)2 only
  3. (c)1 and 3
  4. (d)3 only
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Official answer(a) 1 and 2

2013 · Q29Environment & EcologyPollution & Waste Managementmoderate

Due to improper/indiscriminate disposal of old and used computers or their parts, which of the following are released into the environment as e-waste? 1. Beryllium 2. Cadmium 3. Chromium 4. Heptachlor 5. Mercury 6. Lead 7. Plutonium Select the correct answer using the codes given below:

  1. (a)1, 3, 4, 6 and 7 only
  2. (b)1, 2, 3, 5 and 6 only
  3. (c)2, 4, 5 and 7 only
  4. (d)1, 2, 3, 4, 5, 6 and 7
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Official answer(b) 1, 2, 3, 5 and 6 only