GS3 · Topic
Pollution
Air, water, soil, noise and plastic pollution, waste management, and the regulation of each.
100 UPSC Mains GS3 questions on Pollution that toppers answered in test series, CSE 2017–2025, most answered first. Open one to see how toppers opened, built and closed it.
Promotion of Methanol Economy is the best pathway to realize the development imperatives of India while maintaining environmental sustainability'. Discuss.
15 marks · 250 words · Answered by 2 toppers · CSE 2022
EnergyInfrastructure
What is oil pollution? What are its impacts on the marine ecosystem? In what way is oil pollution particularly harmful for a country like India?
15 marks · 250 words · Answered by 2 toppers · CSE 2025
PollutionBiodiversity and Conservation
Warming ocean temperatures, oxygen loss and ocean acidification form a deadly trio for marine ecosystem that can have irreversible repercussions for environment as well as economy. Elucidate.
15 marks · 250 words · Answered by 2 toppers · CSE 2023
Biodiversity and ConservationClimate Change
What are Trans-fats? Discuss the health concerns associated with them and what steps are being taken to limit their consumption?
15 marks · 250 words · Answered by 2 toppers · CSE 2024
Pollution
Marine litter is not just an environmental issue but poses a socio-economic challenge as well. Discuss. Also, enumerate the initiatives taken by the global community to reduce marine litter.
15 marks · 250 words · Answered by 2 toppers · CSE 2022
PollutionBiodiversity and Conservation
The skewed emphasis on certain crops has distorted the cropping pattern in India, which has led to grave socio-economic and environmental consequences. Elaborate.
10 marks · 150 words · Answered by 2 toppers · CSE 2024
Crops and Cropping PatternsSubsidies and MSP
The recent episodes of coral bleaching are signs of an alarming situation. Explain the reasons behind the phenomenon of coral bleaching. What are the ways to tackle this problem?
15 marks · 250 words · Answered by 2 toppers · CSE 2024
Biodiversity and ConservationClimate Change
What the causes of high levels of particulate matter (PM2.5 and PM10) and ozone pollution in India. How effective are the various steps taken by the government to mitigate particulate matter and ozone pollution?
15 marks · 250 words · Answered by 2 toppers · CSE 2022
PollutionEnvironmental Governance
Give an account of the challenges associated with rapidly increasing biomedical waste in India. Also, state the key features of the Bio-medical Waste Management (Amendment) Rules, 2018.
10 marks · 150 words · Answered by 2 toppers · CSE 2022
PollutionEnvironmental Governance
Unsustainable tourism practices have in the recent past led to huge stress on the natural resources of ecologically fragile and sensitive areas such as the Himalayan states, Western Ghats etc.
Answered by 1 topper · CSE 2023
Biodiversity and ConservationEnvironmental Governance
What are the environmental and health impacts of metal mining pollution? Suggest measures to mitigate the same.
10 marks · 150 words · Answered by 1 topper · CSE 2025
PollutionEnvironmental Governance
What is ground-level ozone pollution? How is it formed, and what are its effects on human health and the environment? In what way is it becoming a serious concern for Indian cities?
10 marks · 150 words · Answered by 1 topper · CSE 2025
Pollution
Illegal and unregulated sand mining not just erodes the environment but also numerous lives. Comment
10 marks · 150 words · Answered by 1 topper · CSE 2024
PollutionBiodiversity and Conservation
Ensuring sustainable consumption and production patterns for an environmentally conscious world is not possible without fundamental changes in lifestyle. Discuss this statement in light of Lifestyle for the Environment (LiFE) Movement.
10 marks · 150 words · Answered by 1 topper · CSE 2023
Climate ChangeEnvironmental Governance
What do you understand by nanotechnology and how is it helping in environmental remediation?
10 marks · 150 words · Answered by 1 topper
Emerging TechnologiesPollution
Ban on single-use plastic is a significant step but not a complete solution to curb plastic pollution. Comment.
10 marks · 150 words · Answered by 1 topper · CSE 2022
Pollution
'Promotion of Methanol Economy' is the best pathway to realise the developmental imperatives of India while maintaining environment sustainability. Discuss.
Answered by 1 topper · CSE 2022
EnergyPollution
Highlighting the major mandate and objectives of the National Clean Air Programme (NCAP), evaluate its performance in mitigating pollution in Indian Cities.
15 marks · 250 words · Answered by 1 topper · CSE 2024
PollutionEnvironmental Governance
State the reasons for the increasing instances of urban floods in India. Also, discuss the steps taken by the government to mitigate the urban flood risk in the country.
Answered by 1 topper
Disaster ManagementDisaster Risk Reduction
Despite huge ecological impacts like high water usage and tree loss, large scale construction projects are declared 'smart' & 'green'. Discuss. How the debate of 'Development versus Environment' can have a logical conclusion. Explain with suitable examples.
10 marks · 150 words · Answered by 1 topper · CSE 2018
Environmental GovernancePollution
How do E-Waste (Management) Rules address the issue of E-waste recycling in India? Also, discuss the various impacts of e-waste on the environment.
15 marks · 250 words · Answered by 1 topper · CSE 2022
PollutionEnvironmental Governance
What role does wetland play in expanding the framework of sustainable development? What are the challenges faced by wetland ecosystem? Discuss the corrective steps required for their effective conservation.
15 marks · 250 words · Answered by 1 topper
Biodiversity and ConservationEnvironmental Governance
The emergence of new human pathogens and the re-emergence of various diseases are particularly concerning in the current decade. Highlight the challenges associated with these developments and propose steps forward to address these concerns.
15 marks · 250 words · Answered by 1 topper · CSE 2024
BiotechnologyPollution
Despite decades of legislation and major river rejuvenation programmes, river pollution remains a critical challenge in India. Identify the main causes and critically assess the effectiveness of legal and policy frameworks.
10 marks · 150 words · Answered by 1 topper · CSE 2025
PollutionEnvironmental Governance
Explain the concept of the 'triple planetary crisis' and the interlinkages between different aspects of this crisis. (10M)
10 marks · 150 words · Answered by 1 topper · CSE 2024
Climate ChangePollution
India is home to 12 out of 15 most polluted cities of South Asia, with large amount of PM2.5 & PM10 and Ozone pollution.
Answered by 1 topper · CSE 2024
PollutionEnvironmental Governance
Bioremediation refers to the use of microorganisms to mitigate soil and water pollution.
Answered by 1 topper · CSE 2024
PollutionBiotechnology
Discuss the status of Waste management in India. Provide suggestions to tackle various kind of wastes and related problems.
15 marks · 250 words · Answered by 1 topper · CSE 2021
Pollution
Discuss the repercussions on marine ecosystem and economy resulting from the combined effects of ocean acidification, ocean warming, and oxygen loss.
15 marks · 250 words · Answered by 1 topper
Climate ChangeBiodiversity and Conservation
What are the key causes of marine pollution? Discuss its overall impact on the environment.
Answered by 1 topper
PollutionBiodiversity and Conservation