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Environment and Ecology

Q.) What are Persistent Organic Pollutants (POPs) and what are their primary characteristics? Discuss the international efforts undertaken for toxic chemicals and their mitigation. (10 Marks/150Words) (UPSC/RAS)

Answer: Persistent Organic Pollutants (POPs) are chemical substances that do not easily degrade in the environment,...

Sep 22, 2026

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Q.) What are Persistent Organic Pollutants (POPs) and what are their primary characteristics? Discuss the international efforts undertaken for toxic chemicals and their mitigation. (10 Marks/150Words) (UPSC/RAS)

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Knowledge Base

Current Affairs & Articles

Subjectwise Questions & Answers

Latest Articles

➔ Mission for Aatmanirbharta in Pulses (2025–26 to 2030–31) Self-Sufficiency, Value Chains & Agrarian Resilience (UPSC/RAS/PSI)

➔ Five Years of PM GatiShakti National Master Plan (NMP) & Integrated Infrastructure Planning (UPSC/RAS/PSI)

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Q.) Write a brief note on the key objectives and significance of India's 'National Green Hydrogen Mission'. (5 Marks, 50 Words) (UPSC/RAS)

Q.) What is the ozone layer? Elucidate the primary causes of its depletion (degradation) and discuss the key international initiatives undertaken for its protection. (10 Marks, 150 Words) (UPSC/RAS)

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​Q.) What do you understand by Biochemical Oxygen Demand (BOD) and COD? Clarify the main difference between these two in the measurement of water pollution? (UPSC/RAS)

​Q.) What do you understand by Eutrophication? Explaining its mechanism in water bodies, discuss its impacts on the aquatic ecosystem and effective control measures for it. (UPSC/RAS)

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Q.) Explain the phenomenon of biomagnification and discuss its impacts on the ecosystem and human health. (5 Marks/50 Words) (UPSC/RAS)

​Q.) What are Persistent Organic Pollutants (POPs) and what are their primary characteristics? Discuss the international efforts undertaken for toxic chemicals and their mitigation. (10 Marks/150Words) (UPSC/RAS)

➔ The Last-Mile Architects of Rural Transformation (UPSC/RAS/PSI)

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Q.) Winter Air Pollution in Delhi-NCR: Causes, AQI & Solutions | {UPSC/RAS Mains}

➔ Pradhan Mantri Awas Yojana-Urban (PMAY-U & PMAY-U 2.0) (UPSC/RAS/PSI)

Q.) What do you understand by Biochemical Oxygen Demand (BOD) and COD? Clarify the main difference between these two in the measurement of water pollution? (UPSC/RAS)

Q.) What do you understand by Eutrophication? Explaining its mechanism in water bodies, discuss its impacts on the aquatic ecosystem and effective control measures for it. (UPSC/RAS)

Q.) What are Persistent Organic Pollutants (POPs) and what are their primary characteristics? Discuss the international efforts undertaken for toxic chemicals and their mitigation. (10 Marks/150Words) (UPSC/RAS)