Environmental Challenges of Waste Management: Important MCQs

COMPETITIVE EXAM MCQs SERIES of ENVIRONMENTAL SCIENCE for UGC-NET/JRF, SLET, ARS, GATE, and other entrance tests – Contemporary Environmental Issues: Environmental Challenges of Waste Management.

Syllabus Outline

1. Environmental and health impacts of improper waste management
2. Waste collection, segregation, storage, and transportation challenges
3. Specific challenges in managing hazardous and biomedical waste
4. Community-based waste management and Swachh Bharat Mission
5. Waste infrastructure gaps and informal waste workers.

This quiz contains concept-based, most frequently asked 25 MCQs of “Contemporary Environmental Issues: Environmental Challenges of Waste Management”. Each question has a single correct/most appropriate answer.

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1. In the anaerobic decomposition of organic waste in landfills, which gas is produced in the largest volume?

A) Carbon dioxide

B) Methane

C) Nitrous oxide

D) Hydrogen sulfide

2. Open burning of municipal waste commonly releases which of these hazardous pollutants?

I – Dioxins and furans

II – Particulate matter

III – Carbon monoxide

IV – Carbon Dioxide

A) I only

B) I and II

C) I, II and III

D) I, II, III and IV

3. Contamination of drinking water by landfill leachate rich in nitrates primarily leads to:

A) Skin rashes

B) Gastrointestinal disorders

C) Respiratory problems

D) Hearing loss

4. The characteristic “rotten egg” odour around landfills is due to the presence of which gas?

A) Ammonia

B) Hydrogen sulfide

C) Methane

D) Carbon dioxide

5. Over a 100-year time horizon, methane’s global warming potential is roughly how many times that of carbon dioxide?

A) 5 times

B) 10 times

C) 25 times

D) 100 times

6. Which of the following are common constituents of landfill leachate?

I – Heavy metals

II – Nitrate compounds

III – Methane gas

IV – Pathogenic bacteria and viruses

A) I, II and IV only

B) I, II and III only

C) I, III and IV only

D) All of the above

7. Which of the following substances is least likely to be present in significant concentration in landfill leachate?

A) Lead

B) Nitrates

C) Pesticide residues

D) Glucose

8. Roughly what percentage by volume of typical landfill gas is methane?

A) 10%

B) 25%

C) 50%

D) 75%

9. Door-to-door waste collection by local authorities is important because it:

A) Eliminates the need for households to segregate waste

B) Encourages segregation of waste at source

C) Increases the total volume of waste collected

D) Requires no government oversight

10. A major challenge in waste transportation includes:

I – Spillage of waste during transit

II – Emissions of greenhouse gases by transport vehicles

III – Overly strict enforcement of transport regulations

IV – Poor Road access to waste sites

A) I only

B) I and II

C) I, II and III

D) I, II and IV

11. In India’s annual cleanliness survey of cities, which factor contributes to a top ranking?

I – Efficient door-to-door collection of waste

II – Source segregation of waste

III – Reliance on landfilling of waste

IV – Active citizen participation in waste reduction

A) I only

B) I and II

C) I, II and IV

D) I, II, III and IV

12. The “waste bank” model in community waste management typically refers to:

A) Households depositing recyclables in exchange for cash

B) A centralised city landfill facility to reduce the maintenance cost

C) Importing waste from other cities for revenue

D) A common waste bin in society avoids door-to-door collection to reduce the cost of waste collection

13. Extended Producer Responsibility in waste management means that:

A) Producers are responsible for the end-of-life management of their products

B) Producers must buy back products from consumers

C) Producers are absolved of post-consumer waste issues

D) Producers should pay municipalities to handle end-of-life disposal of their products

14. According to India’s E-Waste (Management) Rules, 2022, producers should collect e-waste equivalent to:

A) 10% of sales

B) 20% of sales

C) 50% of sales

D) 80% of sales

15. Which of the following is not classified as hazardous waste?

A) Spent engine oil

B) Household wastewater under black categories

C) Empty pesticide containers

D) Industrial chemical solvents

16. In biomedical waste management, autoclaving is primarily used to:

A) Incineration of chemical waste

B) Sterilise infectious waste materials

C) Remove heat-sensitive toxins from biomedical waste

D) Facilitate segregation of infectious and non-infectious waste.

17. Used hypodermic needles from hospitals in India must be disposed of in:

A) Yellow bags

B) Red bags

C) White puncture-proof containers

D) Blue glass containers

18. Hospital waste generated from diagnostic or therapeutic procedures containing radioactive materials should be classified as:

A) Biomedical waste

B) Hazardous waste

C) Special radioactive waste

D) Non-Recyclable waste

19. Which type of biomedical waste is typically treated by autoclaving rather than incineration?

A) Human anatomical waste

B) Infectious plastic waste

C) Chemical liquid waste

D) Radioactive waste

20. Which ministry oversees the Swachh Bharat Mission-Gramin?

A) Ministry of Housing and Urban Affairs

B) Ministry of Defence

C) Ministry of Jal Shakti

D) Ministry of Education

21. According to a 2024 UNEP report, global municipal solid waste generation is projected to reach approximately how many billion tonnes per year by 2050 under business-as-usual?

A) 2.1 B tonnes

B) 3.8 B tonnes

C) 5.0 B tonnes

D) 7.2 B tonnes

22. The “3Rs” of waste management stand for:

A) Reduce, Reuse, Recycle

B) Remove, Recover, Release

C) Reforest, Reclaim, Reinvent

D) Refuse, Replace, Reduce

23. In India’s Solid Waste Management Rules, 2016, a key mandate is:

A) All waste must be collected by municipalities

B) Segregation of waste at source

C) Plastic waste must be recycled under the extended producer’s responsibilities

D) E-waste end-of-life cycle must be handled under the extended producer’s responsibilities

24. What is the primary environmental concern of improper secure landfilling?

A) Reduced soil fertility

B) Groundwater contamination

C) Increased air pollution

D) Loss of biodiversity

25. Palletisation is used to:

A) Securing the toxic chemical layer of the top soil

B) Recycling solid waste under anaerobic conditions

C) Produce Refuse-derived fuel from solid waste

D) Stimulate biodegradation by adding a suitable microorganism

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References

1. Wright, Richard T. and Boorse, Dorothy F. (2017). Environmental Science: Toward a Sustainable Future, Pearson, 13^th Edition.
2. Rajagopalan R. (2015). Environmental Studies from Crisis to Cure, Oxford University Press, 3^rd Edition.
3. Aggarwal, J. C. (2024). Education for Values, Environment and Human Rights, Shipra Publication, 1^st Edition.
4. Sachs, J. D. (2015). The Age of Sustainable Development, Columbia University Press, Revised Edition.
5. De, Anil Kumar and De, Arnab Kumar (2024). Environmental Chemistry, New Age International, 11^th Edition.
6. Gupta, O.P. (2023). Elements of Solid & Hazardous Waste Management, Khanna Publishing House, 1^st Edition.
7. Erach Bharucha (2017). Environmental Studies, Universities Press, 4^th Edition.
8. Singh, J.S., Gupta, S.R., Singh, S.P. & Singh, R. (2026). Ecology, Environmental Science and Conservation, S Chand Publishing, 2^nd Edition.
9. Divan, Shyam (2022). Environmental Law and Policy in India, Oxford University Press, 3^rd Edition.
10. Ministry of Environment, Forest, and Climate Change (2006). National Environmental Policy (NEP) 2006, Government of India.
11. Smith, K. (2013). Environmental Hazards: Assessing Risk and Reducing Disaster, Routledge, 6^th Edition.

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