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UnderStand UPSC Daily Current Affairs Practice
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20–21 September 2026 • UPSC CSE

Read the news. Test the concept. Write the Mains answer.

This interactive edition converts each current-affairs item into one Prelims-level MCQ, one Mains-level question, and a compact value-addition section for revision.

+2 correct −0.66 incorrect Explanation after attempt Image/PDF answer upload
NEWS 1 GS2 • International Relations / Arctic Geopolitics / Security Source: Reuters

Greenland: Strategic Importance in Arctic Geopolitics

Context: Greenland has become a major geopolitical focus after U.S. President Donald Trump repeatedly pressed for greater U.S. control over the island; the latest U.S.-Denmark-Greenland security understanding provides for expanded U.S. military involvement while maintaining Danish sovereignty and Greenlandic self-determination.

Greenland: Basic Facts

Geography
The world's largest island, located between North America, Europe and the Arctic; about 80% of its area is covered by the Greenland Ice Sheet.
Political status
A self-governing part of the Kingdom of Denmark; Denmark retains responsibility for defence and foreign affairs; population is only around 56,000.

Why Greenland Is Strategically Important

Military
The U.S. operates the Pituffik Space Base, giving Greenland importance for missile warning and space surveillance.
Critical minerals
24 of the EU's 34 critical raw materials have been identified in Greenland's deposits of rare earths and other critical minerals.
Arctic routes & competition
Declining sea ice raises the importance of Arctic maritime routes; location and resources have drawn interest from the US, Russia and China.

Economic Potential, Challenges & Significance

Economy
Fisheries remain the mainstay; mining could diversify the economy, but harsh climate, remoteness and high extraction costs limit it — only two mines were active as of January 2026.
Core tension
The episode highlights the balance between strategic security interests and Greenland's right to self-determination, showing how climate change, resources and military competition are converging in the Arctic.
Key Takeaway: Greenland's population is barely 56,000, yet it sits at the intersection of missile-warning radars, a quarter of the EU's critical raw materials, and opening Arctic shipping lanes — which is exactly why a security 'understanding' rather than a sovereignty transfer was the outcome here.

Prelims Practice MCQ

+2 correct • −0.66 wrong

Consider the following statements:
1. Greenland is a self-governing part of the Kingdom of Denmark, with Denmark retaining responsibility for defence and foreign affairs.
2. More than half of Greenland's area is covered by the Greenland Ice Sheet.
3. As of January 2026, more than ten mines were actively operating in Greenland.
Which of the statements given above is/are correct?

Explanation: Statements 1 and 2 are correct. Statement 3 is incorrect — only two mines were active in Greenland as of January 2026, not more than ten.

UPSC Mains Question

10 Marks • 150 Words

Discuss the strategic significance of Greenland in Arctic geopolitics and examine the balance between great-power security interests and Greenlandic self-determination.

Attempt before opening the value-addition tab.
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Use after attempting the Mains answer
  • State Greenland's political status precisely — self-governing under Denmark, with Denmark controlling defence and foreign affairs — a frequently tested distinction.
  • Cite the exact figures — 80% ice-sheet coverage, ~56,000 population, 24 of 34 EU critical raw materials — for quantitative precision.
  • Name the Pituffik Space Base explicitly as the concrete military facility underpinning Greenland's strategic value.
  • Note that only two mines were active as of January 2026 — showing resource potential still far exceeds actual extraction capacity.
  • Frame the broader theme explicitly: climate change, critical minerals and military competition converging in the Arctic.
NEWS 2 GS3 • Environment / Waste Management / Circular Economy / Science & Technology Source: The Hindu

Plastic Waste: From Generation to Resource Recovery

Context: India generates around 26,000 tonnes of plastic waste daily, creating challenges of collection, segregation, recycling and disposal; the emerging approach is to treat plastic waste as a recoverable resource rather than only as an environmental burden.

The Problem & Recycling

Scale
India generates nearly 9.5 million tonnes of plastic waste annually (~26,000 tonnes/day); mixed and contaminated plastic is difficult to recycle, causing loss of material value.
Recycling
Segregated plastic can be recycled into bottles, furniture, packaging, window panes and even bank/ID cards, reducing demand for virgin plastic and supporting a circular economy.

Energy Recovery & Emerging Hydrogen Route

Pyrolysis & waste-to-energy
Pyrolysis uses high temperature with little/no oxygen to convert plastic into liquid fuels and combustible gases; plastic-rich waste can also generate electricity via waste-to-energy systems.
Hydrogen route
Research is exploring converting plastic waste into hydrogen using heat and atmospheric CO2; other feedstocks like seaweed and water are also being investigated.

Building a Sustainable Chain

Hierarchy
Reduce/reuse → segregate at source → recycle first → recover energy from residual waste, in that order of priority.
Governance
Extended Producer Responsibility (EPR) makes producers responsible for collection and end-of-life management; strict environmental safeguards needed on thermal/chemical conversion emissions.
Key Takeaway: The real shift here is conceptual, not just technical — plastic waste stops being purely a disposal problem once you have a hierarchy (reduce → recycle → recover energy → convert to hydrogen) that extracts value at every stage instead of sending it straight to a landfill.

Prelims Practice MCQ

+2 correct • −0.66 wrong

Consider the following statements:
1. India generates nearly 9.5 million tonnes of plastic waste annually.
2. Pyrolysis converts plastic into liquid fuels and combustible gases using high temperatures with little or no oxygen.
3. Recycling is recommended as a lower priority than energy recovery in the suggested waste hierarchy.
Which of the statements given above is/are correct?

Explanation: Statements 1 and 2 are correct. Statement 3 is incorrect — recycling is prioritised over energy recovery in the suggested hierarchy, not the other way around.

UPSC Mains Question

10 Marks • 150 Words

Discuss the various pathways for converting plastic waste into useful resources in India, and outline the elements of a sustainable plastic-waste management chain.

Attempt before opening the value-addition tab.
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Use after attempting the Mains answer
  • Use the precise figures — 9.5 million tonnes/year, ~26,000 tonnes/day — to ground the scale of the problem.
  • Name pyrolysis explicitly and explain its mechanism (high temperature, low/no oxygen) as the key energy-recovery technology.
  • Mention the emerging plastic-to-hydrogen research route as a forward-looking, exam-relevant addition beyond standard recycling.
  • State the waste hierarchy in correct order — reduce/reuse, segregate, recycle, energy recovery — a frequently tested sequence.
  • Cite Extended Producer Responsibility (EPR) explicitly as the key governance/policy instrument.
NEWS 3 GS1 • Climatology / Indian Monsoon; GS3 • Climate Change / Biodiversity / Disaster Management Source: The Hindu

El Niño: Growing Risks for India's Climate and Ecosystems

Context: 188 Indian scientists and ecologists have called for greater preparedness for the possible impacts of a strong El Niño, warning that its effects could extend beyond the monsoon to forests, coral reefs, agriculture and livelihoods, as Pacific Ocean temperatures have risen well above the El Niño threshold.

Current Situation

What is El Niño
Periodic warming of the central and eastern tropical Pacific Ocean that can weaken the Indian monsoon and alter global weather patterns.
Current readings
Pacific temperatures were around 2.6°C above baseline in August, well above the 0.5°C threshold for El Niño; projections suggest anomalies of up to 4°C, with major effects expected from November onwards.

Impact on Monsoon, Agriculture & Livelihoods

Monsoon & agriculture
Generally increases risk of below-normal rainfall and drought; reduced rainfall and extreme heat cause crop stress, lower yields and higher irrigation needs.
Cascading effects
A rainfall deficit can deplete soil moisture and water storage, followed by heatwaves, crop stress and livelihood losses across fisheries and pastoral communities.

Impact on Ecosystems & Way Forward

Ecosystem impacts
Higher ocean temperatures can trigger coral bleaching and mortality; extreme heat/drought raises tree mortality and forest-fire risk, notably in the Western Ghats; urban trees face added heat-island stress.
Way forward
Strengthen early warning and seasonal forecasting; monitor ecosystems (coral, forests, wildlife); promote climate-resilient agriculture; reduce existing ecosystem pressures; strengthen science-government-community collaboration.
Key Takeaway: What makes this El Niño warning different is its scope — scientists aren't just flagging a weak monsoon, they're connecting one Pacific Ocean temperature anomaly to coral bleaching, Western Ghats forest fires and pastoral livelihoods all at once, which is why 188 scientists signed on collectively.

Prelims Practice MCQ

+2 correct • −0.66 wrong

Consider the following statements:
1. El Niño refers to periodic warming of the central and eastern tropical Pacific Ocean.
2. The threshold temperature anomaly used to identify El Niño conditions is 0.5°C above baseline.
3. El Niño events are generally associated with above-normal monsoon rainfall in India.
Which of the statements given above is/are correct?

Explanation: Statements 1 and 2 are correct. Statement 3 is incorrect — El Niño is generally associated with below-normal, not above-normal, monsoon rainfall in India.

UPSC Mains Question

10 Marks • 150 Words

Discuss the potential impacts of a strong El Niño event on India's monsoon, agriculture and ecosystems, and suggest measures to strengthen preparedness.

Attempt before opening the value-addition tab.
Accepted: JPG, JPEG, PNG, WEBP or PDF. The standalone file previews your answer locally; connect the API hook for real server submission.
Use after attempting the Mains answer
  • State the exact temperature figures — 2.6°C above baseline (August), 0.5°C threshold, up to 4°C projected anomaly — for quantitative precision.
  • Trace the cascading-effects chain explicitly: rainfall deficit → depleted soil moisture/water storage → heatwaves → crop stress → livelihood losses.
  • Name specific ecosystem impacts — coral bleaching, Western Ghats forest-fire risk, urban heat-island stress on trees — rather than a vague 'affects biodiversity'.
  • Note the 188-scientist collective warning as evidence of the issue's cross-disciplinary, high-consensus nature.
  • List Way Forward measures precisely — early warning, ecosystem monitoring, climate-resilient agriculture, ecosystem protection, science-based planning.
NEWS 4 GS2 • India-China Relations; GS3 • Manufacturing / Trade & Supply Chains Source: Data Point

India-China Trade: The Paradox of Self-Reliance

Context: India is expanding domestic manufacturing under Atmanirbhar Bharat and the PLI Programme, but this expansion remains heavily dependent on Chinese intermediate goods, components and capital goods, creating a gap between domestic production and domestic value addition.

Widening Trade Imbalance

Exports & imports
Exports to China fell from $23 billion (2021) to $18.1 billion (2025); imports from China rose sharply from $87.5 billion to $149.5 billion.
Deficit & total trade
Trade deficit more than doubled from $64.5 billion to $131.4 billion; total bilateral trade reached around $167.6 billion in 2025.

Nature of India's Dependence

Import composition
Intermediate goods: 69.7% of imports from China (2025); capital goods: 22%; consumer goods: about 8.2%.
Key imports
Top five import categories rose from $19 billion (2021) to $34.6 billion (2025); major items include telecom equipment, laptops, integrated circuits, LED/solar cells and mobile-phone components.

Manufacturing Paradox & Way Forward

The paradox
India is increasingly assembling finished products domestically, especially electronics, while critical components and machinery remain sourced from China — raising assembly capacity without proportionate domestic value addition.
Way forward
Deepen component manufacturing (semiconductors, precision equipment); link PLI incentives to domestic value addition and technology transfer; diversify import sources; integrate with global value chains rather than pursue complete import substitution.
Key Takeaway: India's trade deficit with China doubling to $131.4 billion, even as Atmanirbhar Bharat expands domestic assembly, is the paradox in one number — 'Made in India' finished goods are increasingly real, but they're often built on Chinese intermediate goods that make up nearly 70% of what India imports from China.

Prelims Practice MCQ

+2 correct • −0.66 wrong

Consider the following statements:
1. India's trade deficit with China more than doubled between 2021 and 2025.
2. Intermediate goods accounted for the largest share of India's imports from China in 2025.
3. India's exports to China increased between 2021 and 2025.
Which of the statements given above is/are correct?

Explanation: Statements 1 and 2 are correct. Statement 3 is incorrect — India's exports to China fell from $23 billion in 2021 to $18.1 billion in 2025.

UPSC Mains Question

10 Marks • 150 Words

Discuss the 'paradox of self-reliance' in India-China trade dynamics, and suggest measures to build genuine domestic manufacturing capability under Atmanirbhar Bharat.

Attempt before opening the value-addition tab.
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Use after attempting the Mains answer
  • Use the precise trade figures — exports $23bn→$18.1bn, imports $87.5bn→$149.5bn, deficit $64.5bn→$131.4bn (2021-2025) — for quantitative grounding.
  • State the import composition breakdown — 69.7% intermediate goods, 22% capital goods, 8.2% consumer goods — as the crux of the dependence argument.
  • Name specific imported items — telecom equipment, laptops, integrated circuits, LED/solar cells — to show applied knowledge.
  • Frame the 'manufacturing paradox' precisely: assembly capacity growing without proportionate domestic value addition — the article's central thesis.
  • List Way Forward measures — deepen component manufacturing, PLI linked to value addition, import diversification, GVC integration — rather than 'reduce imports' generically.
NEWS 5 GS3 • Critical Minerals / Rare Earths / Permanent Magnets / Advanced Manufacturing Source: The Hindu

Missing Measure in India's Magnet Mission

Context: India is expanding its critical-mineral and rare-earth capabilities, but lacks a complete picture of its permanent-magnet value chain — the key gap is identifying where India remains technologically and industrially dependent, from mineral processing to finished magnets.

Permanent Magnets: Basics

Types
Retain magnetism without continuous external electricity; major types include Ferrite, Alnico, Samarium-Cobalt (SmCo) and Neodymium-Iron-Boron (NdFeB).
NdFeB importance
Particularly important for EVs, wind turbines, industrial motors, robotics and advanced electronics due to high magnetic strength and low weight; composed mainly of neodymium, iron and boron, with dysprosium/terbium added for high-temperature performance.

India's Resource-Manufacturing Gap

Core problem
India has significant rare-earth resources, but resource availability does not automatically create manufacturing capability; dependence can persist at the processing/manufacturing stage even with domestic minerals.
Value chain
Spans mining, processing, separation, rare-earth oxides, metals, alloys and finished magnets; China's 2025 restrictions on rare-earth magnets highlighted the strategic importance of these downstream capabilities.

The Data Gap & ITEM Solution

Data gap
India's Annual Survey of Industries estimates the domestic permanent-magnet market at around ₹750 crore, far below trade-data-implied import values — existing statistics don't show where magnets enter the economy or embed in products.
ITEM proposal
Integrated Techno-Economic Mapping (ITEM) would integrate engineering, manufacturing, trade and economic data across the value chain, identifying capabilities, technological gaps, import-dependent stages, and investment/partnership opportunities — shifting from mineral-resource mapping to value-chain mapping.
Key Takeaway: India can mine rare earths and still be import-dependent for magnets — the ₹750-crore reported market against far higher implied import values shows the real vulnerability isn't in the ground, it's somewhere in the processing-to-magnet pipeline that current data simply doesn't map.

Prelims Practice MCQ

+2 correct • −0.66 wrong

Consider the following statements:
1. NdFeB magnets are primarily composed of neodymium, iron and boron.
2. Availability of rare-earth resources automatically ensures domestic magnet-manufacturing capability.
3. Integrated Techno-Economic Mapping (ITEM) is proposed to integrate engineering, manufacturing, trade and economic data across the magnet value chain.
Which of the statements given above is/are correct?

Explanation: Statements 1 and 3 are correct. Statement 2 is incorrect — resource availability does not automatically create manufacturing capability; dependence can persist at the processing/manufacturing stage.

UPSC Mains Question

10 Marks • 150 Words

Discuss the gap between India's rare-earth resource base and its permanent-magnet manufacturing capability, and examine how Integrated Techno-Economic Mapping (ITEM) could address this gap.

Attempt before opening the value-addition tab.
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Use after attempting the Mains answer
  • Name the four major permanent-magnet types (Ferrite, Alnico, SmCo, NdFeB) and NdFeB's specific composition and applications.
  • State the core argument precisely: resource availability ≠ manufacturing capability — the article's central conceptual point.
  • List the full value chain — mining, processing, separation, oxides, metals, alloys, finished magnets — to show where dependence can hide.
  • Cite China's 2025 rare-earth magnet export restrictions as the geopolitical trigger highlighting this vulnerability.
  • Name ITEM explicitly and describe its function as moving from 'mineral-resource mapping' to 'value-chain mapping' — the key proposed solution.
NEWS 6 GS2 • Public Health / Nutrition / Hypertension / Non-Communicable Diseases Source: The Hindu

Campaign to Reduce the Intake of Salt

Context: Tamil Nadu has launched a multi-pronged campaign to reduce salt intake and address the growing burden of hypertension and cardiovascular diseases, combining measurement of salt consumption, reduction of sodium in institutional food, dietary awareness and hypertension management.

Salt, Sodium and Health Effects

Mechanism
Excess sodium causes the body to retain more water, increasing blood volume and pressure on artery walls, contributing to hypertension.
Health effects
Persistent high sodium intake raises risk of hypertension, heart disease, stroke and kidney damage, with wider implications for premature mortality.

India's Salt Consumption

Consumption vs recommendation
ICMR data cite average daily salt consumption of around 8.9 g for men and 7.1 g for women, against WHO's recommended limit of less than 5 g/day.
Tamil Nadu burden
A 2024 study cited adult hypertension prevalence of around 33.9% in Tamil Nadu, compared with a cited national average of 28.5%.

Tamil Nadu's Intervention & Way Forward

Key measures
Statewide urine-sample surveys to measure salt intake; progressive sodium reduction in government kitchens, hospitals, hostels; use of the Nutritious Meal Programme and ICDS centres for child nutrition.
What more can be done
Food reformulation of processed/packaged foods; clear front-of-pack sodium labelling; sodium standards for public meals; reduced-sodium, potassium-added salt substitutes; early BP-screening integration at PHCs; continuous monitoring.
Key Takeaway: Tamil Nadu's campaign is notable for starting with measurement, not assumption — statewide urine-sample surveys will scientifically establish actual salt intake before scaling interventions, rather than just launching an awareness drive and hoping consumption falls.

Prelims Practice MCQ

+2 correct • −0.66 wrong

Consider the following statements:
1. The World Health Organization recommends salt intake of less than 5 grams per day for adults.
2. ICMR data cited estimate India's average daily salt consumption for men at around 8.9 grams.
3. Tamil Nadu's 2024 study reported a lower adult hypertension prevalence than the cited national average.
Which of the statements given above is/are correct?

Explanation: Statements 1 and 2 are correct. Statement 3 is incorrect — Tamil Nadu's cited hypertension prevalence (33.9%) was higher than the cited national average (28.5%), not lower.

UPSC Mains Question

10 Marks • 150 Words

Discuss the public-health implications of excessive salt intake in India, and examine Tamil Nadu's multi-pronged campaign to address this issue.

Attempt before opening the value-addition tab.
Accepted: JPG, JPEG, PNG, WEBP or PDF. The standalone file previews your answer locally; connect the API hook for real server submission.
Use after attempting the Mains answer
  • State the exact consumption figures — 8.9g (men), 7.1g (women) vs WHO's <5g recommendation — for quantitative precision.
  • Cite Tamil Nadu's 33.9% vs the cited national 28.5% hypertension prevalence to show the State-specific urgency.
  • List Tamil Nadu's specific interventions — urine-sample surveys, institutional food reduction, Nutritious Meal Programme/ICDS, hypertension counselling — individually.
  • Explain the physiological mechanism precisely: sodium → water retention → blood volume → arterial pressure → hypertension.
  • Mention the 2021 RCT on potassium-added salt substitutes and the UK's 'Action on Salt' programme as evidence-based international/domestic precedents.
NEWS 7 GS3 • Fertiliser Security / Sulphur / Agriculture / Energy Security Source: The Indian Express

Russia, West Asia Energy Disruptions: India's New Sulphur Problem

Context: India has maintained supplies of urea and LNG for domestic fertiliser production, but a new vulnerability has emerged in sulphur, with rising prices affecting the production economics and availability of DAP, SSP and complex fertilisers.

Why Sulphur Matters & India's Requirement

Global sulphur
About 90% of global sulphur is a by-product of oil refining/gas processing (only ~10% directly mined); of ~70 million tonnes consumed globally, fertilisers account for about 60%.
India's need
India consumes around 3.8-3.9 million tonnes of sulphur annually, with fertilisers alone accounting for ~2-2.1 mt; the bulk of this is imported.

The Price Shock & Its Causes

Price trajectory
From below $200/tonne (late 2022-early 2025) to over $500/tonne (December 2025) to around $1,050-1,100/tonne by September 2026.
Causes
Russia-Ukraine conflict disrupting Russian refineries; West Asian conflict affecting energy infrastructure in Saudi Arabia, Qatar and Iran; Russian export restrictions on sulphur/sulphuric acid to protect domestic fertiliser production.

The EV Connection & Impact on India

EV-driven demand
Sulphuric acid is increasingly used to extract nickel from laterite ores for EV battery Mixed Hydroxide Precipitate (MHP); nickel-related demand rose from 3.5 mt (2021) to 16 mt (2025).
India's fertiliser exposure
Domestic phosphoric-acid capacity (~2.2 mt) falls short of requirement (~4.3-4.5 mt); about 2.6-2.8 tonnes of sulphuric acid are needed per tonne of phosphoric acid, so higher sulphur prices raise DAP/SSP costs and subsidy pressure.

Way Forward

Key measures
Diversify sulphur import sources; increase domestic recovery from refineries; maintain strategic buffers and long-term supply arrangements; improve nutrient-use efficiency; integrate energy-sulphur-fertiliser supply-chain monitoring.
Key Takeaway: The electric-vehicle transition and phosphatic-fertiliser production now compete for the same input — sulphuric acid — so a sulphur price that's roughly quintupled since 2025 shows how a decarbonisation trend elsewhere in the world can quietly raise the cost of fertiliser subsidies in India.

Prelims Practice MCQ

+2 correct • −0.66 wrong

Consider the following statements:
1. About 90% of global sulphur is produced as a by-product of petroleum refining and natural-gas processing.
2. India is largely self-sufficient in sulphur and does not depend significantly on imports.
3. Rising demand for sulphuric acid in nickel extraction for EV batteries has contributed to higher global sulphur prices.
Which of the statements given above is/are correct?

Explanation: Statements 1 and 3 are correct. Statement 2 is incorrect — the bulk of India's sulphur requirement is imported, not domestically self-sufficient.

UPSC Mains Question

10 Marks • 150 Words

Discuss the reasons behind the recent surge in global sulphur prices and examine its implications for India's fertiliser security.

Attempt before opening the value-addition tab.
Accepted: JPG, JPEG, PNG, WEBP or PDF. The standalone file previews your answer locally; connect the API hook for real server submission.
Use after attempting the Mains answer
  • Use the exact price trajectory — <$200/tonne (2022-25) → $500+/tonne (Dec 2025) → ~$1,050-1,100/tonne (Sep 2026) — to show the scale of the shock.
  • State India's sulphur numbers precisely — 3.8-3.9 mt total consumption, 2-2.1 mt for fertilisers, mostly imported.
  • Name all three causal factors — Russia-Ukraine conflict, West Asian conflict, Russian export restrictions — not just 'geopolitical tensions'.
  • Explain the EV-nickel-sulphuric acid connection explicitly (3.5 mt→16 mt nickel-related demand, 2021-2025) as the article's most distinctive point.
  • Cite the phosphoric-acid capacity-requirement gap (2.2 mt vs 4.3-4.5 mt) and the 2.6-2.8 tonnes sulphuric-acid-per-tonne ratio for quantitative depth.

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