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12 topicsGS-1: 5GS-2: 2GS-3: 5
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GS-1History

1.Vrindavani Vastra Silk Tapestry (Assamese Textile)

Times of India
Illustration for Vrindavani Vastra Silk Tapestry (Assamese Textile)

What & Where

Artefact Vrindavani Vastra = 16th-century Assamese silk tapestry narrating Krishna’s Vrindavan deeds

Production 15 panels hand-woven under Vaishnavite saint Srimanta Sankardeva; final size ≈ 9.37 m × 2.31 m

Location British Museum, London; 18-month public loan to Assam confirmed for 2027

Quick Facts for MCQs

History & Provenance

  • Commissioned Assam, travelled to Tibet’s Gobshi monastery, seized during 1904 Younghusband mission
  • Acquired by journalist Perceval Landon; entered British Museum 1905
  • Initially catalogued as Tibetan silk, Assamese origin re-established decades later

Art & Craftsmanship

  • Technique complex tapestry-weave producing vibrant narrative motifs
  • Iconography Krishna’s childhood, gopis, floral scrolls, mythic animals
  • Medium shows Bhakti storytelling despite sect’s general avoidance of idols

Cultural Significance

  • Symbol of Assamese Vaishnavite identity and neo-Vaishnavite reform movement
  • Embodies fusion of spirituality, performance (bhaona), and textile art
  • Often cited in repatriation debates on Indian heritage abroad

Heritage Diplomacy

  • Loan signals growing global cooperation on artefact access without full restitution
  • Exhibition expected to boost regional tourism and cultural scholarship

Key Data Points

FeatureData-Point
Century of creation16th C
Primary materialSilk
Patron rulerKoch king Nara Narayan
Spiritual guideSrimanta Sankardeva
Number of panels15
Dimensions937 cm × 231 cm
Accession numberAs1905,0118.4
Present custodianBritish Museum
Loan duration18 months from 2027
GS-1Environment

2.Mini Cloudbursts Localised Intense Rainfall (Localised Rainfall)

The Hindu
Illustration for Mini Cloudbursts Localised Intense Rainfall (Localised Rainfall)

What & Where

Mini cloudburst = ≥5 cm rain in ≤1 hr over ~20–30 sq km; intensely local.

Hot-spots: Himalayas (HP, Uttarakhand, J&K, Ladakh) and big metros (Mumbai, Chennai, Delhi NCR).

IMD: mini-event frequency rising; major cloudburst trend static.

Quick Facts for MCQs

Tech & Forecasting

  • Doppler radars key; offer heavy-cloud alerts but not pinpoint timings.
  • Satellite imagery ≥1 km resolution misses 20 sq km cells.
  • Limited gauge density means many events remain unverified statistics.

Regions & Orography

  • Steep Himalayan slopes force rapid moist air uplift, spawning bursts.
  • Coastal metros: sea-breeze convergence plus heat-island magnify convection.
  • 30 Aug 2025 Chennai mini-cloudburst showcased southern exposure.

Disaster Impact

  • 2–5 cm hr⁻¹ on hills triggers flash floods, landslides, road washouts.
  • Urban deluge overwhelms drains, causing traffic paralysis, property loss.
  • Escalates workload for NDMA, SDRF, municipal climate-resilience schemes.

Key Data Points

FeatureData-Point
Mini-cloudburst threshold≥5 cm hr⁻¹
Official cloudburst bar≥10 cm hr⁻¹
Spatial footprint≈20–30 sq km
Typical lifespanFew minutes – 1 hour
Core Himalayan statesHP, Uttarakhand, J&K, Ladakh
Urban risk centresMumbai, Chennai, Delhi NCR
Forecast windowRadar nowcasting <2 hrs; no precise model
Data gap causeSparse ground gauges; coarse satellite pixels

Related UPSC Prelims PYQs

GS1, NDA_GAT 2022PYQ 1

The deluge affected the population.

GS1, NDA_GAT 1999PYQ 2

Which one of the areas marked as A, B, C and D in the given figure of the cyclone, witnesses heavy torrential short-duration rainfall accompanied by thunderstorms?

GS-1Mapping

3.Nauru Pacific Island Nation (Pacific Island)

IT
Illustration for Nauru Pacific Island Nation (Pacific Island)

What & Where

Sovereign microstate; 21 sq km; Micronesia subregion of South Pacific Ocean.

De facto capital Yaren District; nearest land Banaba (Kiribati) ~300 km east.

Hosts Australia’s offshore refugee-processing centre since 2001.

Quick Facts for MCQs

Legal & Policy

  • Agreement 2025 relocates non-visa holders released after 2023 High Court decision.
  • Critics cite breach of international refugee protection norms.
  • Australia retains power to reactivate offshore detention on Nauru.

Economic Angle

  • Phosphate exhaustion left economy reliant on Australian aid and service fees.
  • Deportation deal injects significant upfront and recurrent revenue.
  • Limited domestic diversification; unemployment and fiscal vulnerability persist.

Environmental Impact

  • Intensive phosphate mining caused 80 % land degradation and loss of arable soil.
  • Freshwater scarce; nation depends on desalination and rainwater collection.
  • Rising sea levels threaten coastal belt of low-lying atoll nation.

Key Data Points

FeatureData-Point
Official nameRepublic of Nauru
Historic namePleasant Island
Population (approx)10,800
Global size rank3rd-smallest state by area
Upfront deal paymentA$408 million (≈ US$267 million)
Annual payment post-arrivalA$70 million
High Court ruling year2023 (ended indefinite detention)
Main past exportPhosphate
UN membershipYes
Commonwealth membershipYes
GS-3Environment

4.Sea-Level Rise in Maldives–Lakshadweep (Sea-Level Rise)

TH’

What & Where

Coral microatolls: flat-topped corals recording highest yearly tide levels, act as natural tide gauges

Maldives–Lakshadweep: low-lying atolls in central Indian Ocean showing earliest, fastest regional sea-level rise

Study zone: Fulhadhoo atoll cores dated via uranium-thorium, cross-checked with tide-gauge & satellite data

Quick Facts for MCQs

Drivers

  • Thermal expansion, Himalayan–Arctic–Antarctic ice melt, intensified Indian Ocean warming amplify volume
  • Climate variability: El Niño & Indian Ocean Dipole alter winds, stacking water in central basin

Ecological Impact

  • Reduced light, coral bleaching, shoreline erosion threaten reef biodiversity and mangrove stability
  • Fisheries nursery loss undermines food security for island communities dependent on reef health

Adaptation & Monitoring

  • Integrated network: coral microatolls + tide gauges + satellites for century-scale datasets
  • Priority actions: mangrove restoration, climate-resilient tourism infrastructure, community relocation planning for Lakshadweep

Key Data Points

FeatureData-Point
Total rise 1930-2019~0.3 m
Acceleration onsetLate 1950s
Rate 1930-591–1.8 mm/yr
Rate 1960-922.7–4.1 mm/yr
Rate 1990-20193.9–4.8 mm/yr
Post-1959 average3.2 mm/yr
Last 20–30 yrs~4 mm/yr
50-yr Maldives-Lakshadweep rise30–40 cm
Core dating toolUranium–thorium
Key disruptors spottedEl Niño, positive IOD, lunar nodal cycle
GS-3Environment

5.Gangotri Glacier Retreat and Climate Impact (Gangotri Glacier)

Down to Earth
Illustration for Gangotri Glacier Retreat and Climate Impact (Gangotri Glacier)

What & Where

Gangotri Glacier System (GGS): compound valley glacier on northern Chaukhamba slopes, Uttarkashi, Uttarakhand

Terminates at Gaumukh; Bhagirathi River emerges and meets Alaknanda at Devprayag to form Ganga

Fed by tributary glaciers Raktvarn, Chaturangi, Swachand and peaks Shivling, Thalay Sagar, Meru, Bhagirathi III

Quick Facts for MCQs

Environmental Impact

  • Temperature rise cut GGS snowmelt flow by 10 % since 1980
  • Thinning rate of 46 cm / yr driving snout recession across Himalaya
  • Hydrology shift shows higher rainfall-runoff and baseflow altering river seasonality

Glacial Geography

  • Compound-valley glacier structure supported by Raktvarn, Chaturangi, Swachand tributaries
  • Catchment ringed by peaks Shivling, Thalay Sagar, Meru, Bhagirathi III
  • Himalayan glacial lake area expanded 10.81 % between 2011–24 increasing outburst risks

Biodiversity

  • Forests host chirpine, deodar, fir, spruce, oak, rhododendron
  • Key fauna: Snow Leopard, Musk Deer, Himalayan Tahr, Black & Brown Bear, Monal, Snowcock
  • Gaumukh-Tapovan trek offers eco-tourism within Gangotri National Park

Key Data Points

FeatureData-Point
Snowmelt flow loss (1980–2020)10 %
Avg Himalayan glacier thinning46 cm per year
Glacial lake area rise (2011–24)10.81 %
GGS terminusGaumukh
Emerging riverBhagirathi
Confluence forming GangaDevprayag
Gangotri NP notified1989
Dominant forest typeTemperate conifers

Related UPSC Prelims PYQs

CDS_GK, GEO_GS 2024PYQ 1

ISRO, in its studies, has revealed that there is a 178% increase in the size of the Gepang Ghat Glacial Lake. In which of the following States/UTs is this lake located?

CDS_GK, GEO_GS 2023PYQ 2

Which one of the following glaciers is not part of Pir Panjal Range?

GS-3S&T

6.Mira Variable Stars Distance Calibration (Stellar Distance)

PIB

What & Where

Mira variables = cool, pulsating red-giant stars in late evolutionary stage of low–intermediate mass stars.

Brightness changes via outer-layer expansion/contraction; exhibit strong period–luminosity law like Cepheids.

Used as extragalactic “standard candles”, now anchoring distance ladder for Hubble constant estimation.

Quick Facts for MCQs

Astronomy & Physics

  • Period–luminosity law enables direct absolute-magnitude derivation, paralleling Cepheid method but at cooler temperatures.
  • Oxygen-rich subtype minimises metallicity bias, yielding cleaner cosmic distance calibration.
  • Serve as luminous beacons in infrared, penetrating dust better than optical Cepheids.

Historical Note

  • Mira was first stellar variable formally identified, initiating variable-star astronomy in 17th century.
  • Long observational arc provides century-scale light-curve data, validating period stability assumptions.

Research Significance

  • IUCAA-led, Adam Riess-co-authored work offers independent rung on distance ladder, bolstering robustness of cosmic scales.
  • 3.7 % precision narrows divergence between Planck CMB and local measurements, informing dark-energy models.

Key Data Points

FeatureData-Point
Prototype starMira (Omicron Ceti)
First variability record1596, David Fabricius
Brightness-variation period100 – 1,000 days
Typical surface temperature≈ 3,000 K
Metallicity sensitivityOxygen-rich Miras less affected
Evolutionary phaseDying red-giant (Asymptotic Giant Branch)
Key propertyTight period–luminosity relation
New study precisionHubble constant to 3.7 %
Calibration targetType Ia supernovae distances
Cosmological issue addressedLate- vs early-Universe Hubble tension
GS-3S&T

7.National Biofoundry Network for Bioeconomy (Biofoundry Network)

The Hindu
Illustration for National Biofoundry Network for Bioeconomy (Biofoundry Network)

What & Where

Bioeconomy: production-utilisation-conservation of biological resources via tech; India evolving from USD 10 bn (2014) to USD 300 bn target (2030).

BioE3 Policy 2024: national blueprint to mainstream high-performance biomanufacturing, Bio-AI hubs, biofoundries, skilling.

National Biofoundry Network 2025: 6 public institutions across India to scale lab proofs to industry pilots.

Quick Facts for MCQs

Legal & Policy

  • Alignment: BioE3 dovetails Green Growth, LiFE, Net-Zero pledges.
  • Harmonisation need: Patents Act & PPVFR Act overlap on biotech IPR.
  • Suggestion: single-window approvals for GM & gene-edited products.

Economic Angle

  • Saving: Ethanol programme cuts crude import bill, boosts rural income.
  • Market: India ranks 3rd globally by pharma volume, 65 % world vaccine output.
  • Employment: Bio initiatives spreading jobs to tier-II/III cities, MSMEs.

Tech & Schemes

  • Support: BIRAC funds startups via 95 bio-incubators, Bio-RIDE drives academia-industry links.
  • Crop focus: drought-tolerant chickpea, genome-edited rice, AGRDB database.
  • Innovation: world’s first DNA Covid-19 vaccine licensed in India.

Challenges

  • Finance: high capex, long return horizon deters private capital.
  • Skills: shortages in bioinformatics, synthetic biology, manufacturing ops.
  • Societal: GMO scepticism, biosafety & biosecurity apprehensions.

Environmental Impact

  • Benefit: circular bioeconomy promotes biofertilisers, biopesticides, bioremediation.
  • Risk: large-scale feedstock cultivation may spur deforestation, water stress.
  • Goal: regenerative biomanufacturing to maintain ecological balance.

Key Data Points

FeatureData-Point
Bioeconomy value 2024USD 165.7 billion
2030 bioeconomy targetUSD 300 billion
BioE3 approval year2024
Biofoundry Network nodes6 institutions
Ethanol-petrol blending goal20 % by 2025
Forex saved via ethanol₹1.36 lakh crore
Active biotech startups>10,000 (2024)
DBT budget share<1 % of GDP

Related UPSC Prelims PYQs

CDS_GK 2025PYQ 1

भारत में नवाचार तथा अनुसंधान और विकास के बारे में निम्नलिखित कथनों पर विचार कीजिए :

GS-2Editorial

8.Panchsheel Doctrine in India–China Relations (Panchsheel Principles)

Indian Express
Illustration for Panchsheel Doctrine in India–China Relations (Panchsheel Principles)

What & Where

Panchsheel: five-principle peace code signed in 1954 India-China Tibet Trade Agreement.

Geography focus: Line of Actual Control spanning Ladakh–Arunachal; epicentre of recurring stand-offs.

Diffusion: Principles fed into Bandung 1955, UNGA 1957 and NAM 1961 charters.

Quick Facts for MCQs

Strategic Significance

  • Autonomy: Panchsheel anchors India’s non-alignment and strategic autonomy narrative
  • Image: Helps China project benign rising-power persona, countering ‘assertive’ label
  • Multipolarity: Doctrine aligns with South-South solidarity and anti-bloc politics

Challenges

  • Border: Doklam and Galwan reveal fragility of peace mechanisms along LAC
  • Trade: USD 100 bn deficit deepens Indian dependence and strategic vulnerability
  • Perception: QUAD ties viewed by Beijing as containment, fuelling mistrust

Opportunities

  • Economy: Scope for joint work in renewables, pharma, high-tech diversification
  • Multilateral: SCO, BRICS, G20 to pursue WTO, UNSC reform agendas
  • Culture: Buddhism pilgrimages and tourism create soft-power bridge for goodwill

Way Forward

  • Reaffirm: Use Panchsheel to negotiate verifiable border disengagement protocols
  • CBMs: Hotlines, joint patrols, local commander meets to prevent escalation
  • Balance: Reduce Chinese import reliance while exploring complementary trade areas

Key Data Points

FeatureData-Point
Year of Panchsheel signing1954
Core signatoriesJawaharlal Nehru & Zhou Enlai
Five principles setSovereignty respect; Non-aggression; Non-interference; Equality; Peaceful coexistence
Latest Modi–Xi meetSCO Summit, Tianjin 2025
China’s 2025 four-point planTrust; Strategic communication; Expanded cooperation; Safeguard common interests
Major India–China trade gap≈ USD 100 billion (in China’s favour)
Key flashpointsDoklam 2017; Galwan 2020
India’s stated pre-conditionBorder peace prerequisite for normal ties

Related UPSC Prelims PYQs

GS1, NDA_GAT 1997PYQ 1

Which one of the following is NOT a principle of “Panchsheel”?

GS1, NDA_GAT 2024PYQ 2

निम्नलिखित में से कौन-सा, 1954 में भारत और चीन द्वारा हस्ताक्षरित ‘पंचशील’ समझौते में निहित पाँच सिद्धांतों का भाग नहीं है ?

GS-3Security

9.Bhairav Light Commando Battalions (Light Commando)

DH

What & Where

Bhairav Commando Battalions: light, 250-strong strike units carved from existing infantry.

Tasked for rapid cross-border actions along China and Pakistan frontiers.

First five bases: Leh, Srinagar, Nagrota, western desert sector, eastern hill sector.

Quick Facts for MCQs

Security Dimension

  • Deployment strengthens forward reaction time in drone-dense, high-altitude and desert theatres.
  • Units designed to bridge capability gap between infantry and elite SF.

Organizational Structure

  • Composition follows lean, agile model for mobility and quick induction.
  • Drawn entirely from present infantry manpower, ensuring zero net head-count growth.

Training & Equipment

  • Regimental centres impart basics; SF attachment hones advanced assault and tech skills.
  • Standard kit includes loitering munitions, mini UAVs, night-optic surveillance suites.

Strategic Modernization

  • Bhairav launch parallels new Rudra brigades, Shaktibaan regiments, Divyastra batteries in Army overhaul.

Key Data Points

FeatureData-Point
Force typeLight commando battalion
Troop strength≈250 soldiers; 7–8 officers
Parent scheme“Save and Raise” (no fresh accretion)
Complements10 Para-SF & 5 Para (Airborne)
Training cycle2–3 m regimental + 1 m Special Forces
Initial raisings5 battalions (3 Northern, 1 Western desert, 1 Eastern hills)
Core tasksReconnaissance, interdiction, disruption, swift strike
Equipment focusLatest rifles, drones, surveillance, tactical gadgets
Size comparisonInfantry 800, Para-SF 620, Bhairav 250
Strategic aimFree Para-SF for deep, high-risk missions

Related UPSC Prelims PYQs

CAPF_GAI 2022PYQ 1

Which one of the following is the oldest Central Paramilitary Force in India?

GS-2Scheme

10.Green Credit Tree Plantation Methodology (Green Credit)

Business Standard
Illustration for Green Credit Tree Plantation Methodology (Green Credit)

What & Where

Green Credit Programme (Oct 2023): market-based mechanism rewarding voluntary eco-actions in India

Revised 2025 methodology focuses on tree plantation survival + canopy, not raw planting numbers

Geography: applicable pan-India on degraded forest, community, revenue or private lands

Quick Facts for MCQs

Legal & Policy

  • Notification2025 supersedes 2024 rules yet grandfathering ongoing projects
  • Credit exchange legally counts toward FCA compensatory afforestation compliance
  • Non-transferability aims to avoid speculative secondary markets

Verification & Compliance

  • Third-party verification ensures survival count and canopy threshold
  • Applicant bears verification cost, incentivising accurate self-reporting
  • Extinguishment post-use prevents double counting in CSR or ESG filings

Environmental Impact

  • Survival-centric metric promotes quality restoration on degraded landscapes
  • Canopy density criterion encourages multi-layered native species plantations
  • Five-year lag discourages short-term greenwashing attempts

Key Data Points

FeatureData-Point
Implementing ministryMoEFCC
First notificationOct 2023
Latest revision year2025 draft
Credit definition1 tree surviving > 5 yrs
Minimum canopy for credit40 %
Waiting period before issuance5 yrs post-plantation
TradabilityNon-tradable, non-transferable except holding–subsidiary
Exchange frequencyOne-time only, then extinguished
Eligible usesCompensatory afforestation, CSR, project obligations
VerificationDesignated agencies; fee paid by applicant

Related UPSC Prelims PYQs

CDS_GK, GS1 2024PYQ 1

‘ग्रीन क्रेडिट इनिशिएटिव’ के संदर्भ में, निम्नलिखित में से कौन-सा/कौन-से कथन सही है/हैं?

CDS_GK, GS1 2009PYQ 2

In the context of CO₂ emission and Global Warming, what is the name of a market-driven device under the UNFCCC that allows developing countries to get funds/incentives from the developed countries to adopt better technologies that reduce greenhouse gas emissions ?

GS-1MiscQuick Bite

11.National Sports Day 2025 Observance (National Sports Day)

Indian Express
Illustration for National Sports Day 2025 Observance (National Sports Day)

What & Where

Observance — National Sports Day, celebrated 29 August across India

Purpose — honours hockey icon Major Dhyan Chand and fosters mass sports participation

Status — declared national observance 2012; platform for Fit India campaigns

Quick Facts for MCQs

Awards & Honours

  • Khel Ratna rewards most outstanding yearly performance by Indian sportsperson
  • Arjuna Award recognises consistent excellence; instituted 1961
  • Protsahan Puruskar honours entities aiding sports over preceding three years

Fit India Movement

  • Launched by Prime Minister on National Sports Day 2019
  • Mission uses annual themes to nudge behavioural change toward active lifestyle
  • 2025 slogan pushes community use of playfields for one hour daily

Major Dhyan Chand Legacy

  • Led India to Olympic hockey golds 1928, 1932, 1936
  • Skill set earned global moniker Hockey Wizard; stick allegedly examined for magnet
  • India’s post-retirement Olympic golds 1948, 1952, 1956, 1964 reflect sustained foundation

Key Data Points

FeatureData-Point
First national observance year2012
Observance date29 August
2019 initiative launchedFit India Movement
2025 celebration theme“Ek Ghanta, Khel ke Maidan Main”
Theme focus60 minutes daily physical activity
Highest sporting honourMajor Dhyan Chand Khel Ratna
Khel Ratna instituted1991–92
Renamed from Rajiv Gandhi Khel Ratna2021
Second highest sporting honourArjuna Award
Top coach honourDronacharya Award
Org-centric sports awardRashtriya Khel Protsahan Puruskar
Major Dhyan Chand nicknameHockey Wizard
Birth–death1905 – 1979
Military rank at retirementMajor, Indian Army
Civilian award receivedPadma Bhushan, 1956

Related UPSC Prelims PYQs

CDS_GK, ESE_GS 2022PYQ 1

Which one of the following is NOT correct regarding the Khel Ratna Award?

CDS_GK, ESE_GS 2025PYQ 2

Who among the following were awarded the Major Dhyan Chand Khel Ratna Award 2024?

GS-1Misc

12.Educate Girls Wins Magsaysay Award (Ramon Magsaysay Award)

News on Air
Illustration for Educate Girls Wins Magsaysay Award (Ramon Magsaysay Award)

What & Where

Award: Ramon Magsaysay Award, Asia’s highest annual honour for courage, integrity, selfless service

Origin: Created 1957 in Manila by Rockefeller Brothers Fund to memorialise Philippine President Ramon Magsaysay

2025 Milestone: Indian NGO Educate Girls first organisational winner; works across 30,000 rural villages

Quick Facts for MCQs

Award Genesis

  • Establishment: 1957 memorial tribute, funded by Rockefeller Brothers Fund
  • Criteria: Greatness of spirit, public service benefiting Asian communities

Indian Laureates

  • Pioneer: Vinoba Bhave 1958 for Bhoodan movement
  • Recent: Wilson & Krishna 2016; Vatwani & Wangchuk 2018; Ravish Kumar 2019; Ravi Kannan 2023; Educate Girls 2025

NGO Programmes & Impact

  • Mobilisation: Team Balika volunteers enrol, retain out-of-school girls in villages
  • Pragati: NIOS open-school route helps women 15–29 finish Class 10

Innovative Finance

  • Bond: 2015 Development Impact Bond tied investor returns to enrolment and learning outcomes
  • Partners: UBS Optimus invested, CIFF paid outcomes, IDinsight verified results

Key Data Points

FeatureData-Point
Award categoryAnnual Asian honour
Instituted year1957
HeadquartersManila, Philippines
Administered byRamon Magsaysay Award Foundation
EligibilityAsian individuals & organisations
Award componentsMedallion, certificate, cash prize
First Indian winnerVinoba Bhave, 1958
First Indian organisationEducate Girls, 2025
Educate Girls founderSafeena Husain
NGO founded2007
Girls benefitted2 million +
Innovative bond2015 Development Impact Bond

Related UPSC Prelims PYQs

GS1 2003PYQ 1

Sandeep Pandey, the winner of Raman Magsaysay Award, is mainly an activist in

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