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16 topicsGS-1: 4GS-3: 12
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GS-3Economy

1.Microfinance Regulation Challenges in India (Microfinance Regulation)

The Hindu
Illustration for Microfinance Regulation Challenges in India (Microfinance Regulation)

What & Where

Microfinance: small-ticket loans, savings, insurance for low-income, unbanked households.

Key model: 1980s Self-Help Group–Bank Linkage, later expanded via regulated Microfinance Institutions (MFIs).

Karnataka: 2024 Micro Loan & Small Loan (Prevention of Coercive Actions) Bill targets coercive recoveries after borrower suicides.

Quick Facts for MCQs

Financial Inclusion

  • Outreach: MFIs penetrate rural women excluded from banks, catalysing livelihood credit for farming, dairy, petty trade.
  • Scale: Over 1 crore SHGs mobilised nationwide, significant female empowerment via joint-liability lending.
  • Impact: Reduces reliance on informal moneylenders, lowers effective borrowing costs.

Regulatory Gaps

  • Unregistered lenders: Fly-by-night agents escape RBI oversight, foster aggressive recovery practices.
  • Over-indebtedness: Multiple concurrent loans, weak credit-bureau integration, create repayment spirals.
  • Political waivers: Election-time moratorium promises (e.g., Assam 2021) erode repayment culture.

Corrective Measures

  • Legal: Enforce RBI Fair Practices Code, restrict unlicensed entities, enable local ombudsmen.
  • Tech: Mandatory bureau reporting, real-time caps on borrower exposure, social performance ratings.
  • Literacy: Grass-roots campaigns on debt limits, borrower rights, complaint channels.

Key Data Points

FeatureData-Point
All-India microfinance portfolio₹3.91 lakh crore, FY25 Q3
Karnataka unique borrowers63 lakh persons
Typical MFI interest18–26 % p.a.
Moneylender interest60–120 % p.a.
SHG credit disbursed FY24₹1 lakh crore
Karnataka MFI loan bookFell ₹42,000 cr → ₹34,000 cr in 2024
Reported Karnataka loan-stress deaths22–38 in six months
Bill passage year2024

Related UPSC Prelims PYQs

CDS_GK, GS1 2022PYQ 1

Which one of the following statements about a borrower from a Microfinance Company is NOT correct?

CDS_GK, GS1 2011PYQ 2

Microfinance is the provision of financial services to people of low-income groups. This includes both the consumers and the self-employed. The service/services rendered under microfinance is/are:

GS-1History

2.Ambedkar–Gandhi Ideological Convergence and Divergence (Freedom Movement Debates)

Indian Express

What & Where

Concept — Ambedkar–Gandhi interface on caste, democracy, social justice in colonial-to-early-Republic India

Key processes — non-violent mass mobilisation, constitutional reform, state affirmative action, moral persuasion

Core geography — Maharashtra, Gujarat, Delhi; linked sites Mhow, Nagpur, Mumbai, London, Vadodara

Quick Facts for MCQs

Ideological Convergence

  • Non-violence; both rejected Bolshevik class-war violence, upheld ethical means
  • Human-dignity focus; Sarvodaya versus Bahujan Hitay yet shared compassion aim
  • Public-ethics stress; character considered prerequisite for leadership

Ideological Divergence

  • Caste; Ambedkar sought total annihilation, Gandhi initially reformed varna later said caste must go
  • Political safeguards; Ambedkar pressed separate electorates, Gandhi fasted leading to joint-seat compromise
  • Religion; Ambedkar found Hinduism discriminatory, embraced Buddhism, Gandhi practiced Sarva Dharma Sambhava

State & Economy

  • Ambedkar; state socialism, land reform, public ownership of key industries, constitutional remedy for inequality
  • Gandhi; trusteeship, village swaraj, swadeshi, minimal state, small-scale production

Government Tributes

  • Panchteerth circuit funding commemorates Mhow, London, Nagpur, Mumbai, Delhi sites
  • DACE centres in 31 universities give free UPSC coaching to Scheduled Castes
  • ASIIM mission finances SC youth startups and innovations

Key Data Points

FeatureData-Point
Ambedkar birth-year1891
Gandhi birth-year1869
Poona Pact year1932
Book “Annihilation of Caste”1936
Book “Buddha or Karl Marx”1956
Navayana Buddhism launch14 Oct 1956
States & Minorities memo1947
Posthumous Bharat Ratna1990
Constitution Day26 Nov (since 2015)
BHIM App launch2016

Related UPSC Prelims PYQs

GS1, NDA_GAT 2022PYQ 1

The Mahad Satyagraha of 1927 was organized by

GS1, NDA_GAT 1997PYQ 2

The Poona Pact which was signed between the British Government and Mahatma Gandhi in 1932 provided for

GS-1Environment

3.Industrial Ammonia Gas Leak Hazards (Industrial Disasters)

The Hindu
Illustration for Industrial Ammonia Gas Leak Hazards (Industrial Disasters)

What & Where

Ammonia: colorless pungent NH₃; Haber-Bosch synthesis; stored compressed for fertilizer, refrigeration, emerging green fuel.

Industrial/Chemical disaster: major MAH-unit accident releasing hazardous agents; India logged 130 events (2013-23).

Geography: leaks at Ratlam-MP (2025), Chennai (2024), Vizag (2020), Bhopal (1984) highlight high-risk industrial belts.

Quick Facts for MCQs

Legal & Policy

  • Statutes: EPA 1986, Factories Act 1948, MSIHC Rules 1989 enforce hazardous-chemical safeguards.
  • PLIA 1991 mandates compulsory insurance, instant relief to accident victims.
  • OHSWC Code 2020 adds employer duty, contract-worker protection, gender-inclusive jobs.

International Conventions

  • Basel 1989 controls hazardous-waste cross-border movement and disposal.
  • Rotterdam 2004 enforces Prior-Informed-Consent for hazardous chemical trade.
  • UNEP CAPP 2006 gives flexible template for accident prevention in developing nations.

Risk Mitigation Measures

  • Mapping: GIS hazard-zonation, mandatory buffer zones; aligns with SDG-11 & SDG-3.
  • Enforcement: emergency response centres, off-site plans, strict safety-violation penalties.
  • Surveillance: real-time monitoring, HAZOP/HAZAN studies; fiscal incentives for tech upgrades.

Recent Incidents

  • 2025 Ratlam ice-factory ammonia leak caused local panic, minimal casualties.
  • 2024 Chennai ammonia pipeline rupture during Cyclone Michaung restoration.
  • 2020 Vizag styrene leak; 1984 Bhopal MIC disaster remains worst industrial accident.

Key Data Points

FeatureData-Point
Haber-Bosch reactionN₂ + 3H₂ → 2NH₃
Ammonia energy density9× Li-ion; 3× compressed H₂
SolubilityHighly soluble; forms NH₄OH
NDMA decade toll130 accidents; 259 deaths; 563 injuries
Public Liability Insurance Act1991
Environment Protection Act1986
Sendai Framework span2015-2030
UN Industrial Accidents Convention1992
GS-1Mapping

4.Tanzania Key Geographical Features (East Africa Geography)

ANI
Illustration for Tanzania Key Geographical Features (East Africa Geography)

What & Where

Africa-India Maritime Exercise (AIKEYME-2025); first India-Africa naval drill, hosted off Tanzania’s coast.

Participants: Indian Navy + nine African navies; aims anti-piracy, maritime-security, interoperability.

Tanzania: East African Indian-Ocean nation south of Equator; official capital Dodoma.

Quick Facts for MCQs

Security Dimension

  • AIKEYME-2025 drills: visit-board-search-seizure, EEZ patrols, search-and-rescue, tactical manoeuvres.
  • Exercise reinforces Indian Ocean security architecture under India’s SAGAR doctrine.
  • Showcases India’s defence outreach to African littorals amid piracy resurgence near Gulf of Aden.

Physical Geography

  • Mt Kilimanjaro, dormant stratovolcano, highest free-standing mountain globally.
  • Western Rift Valley hosts Lakes Tanganyika & Victoria, vital inland waterways.
  • Rufiji delta creates country’s largest mangrove estuary along Indian Ocean.

Biodiversity & Heritage

  • Serengeti supports annual 1.5 mn-strong wildebeest migration, a key eco-tourism draw.
  • Selous Game Reserve among world’s largest faunal reserves; rich in elephant populations.
  • Ngorongoro Crater, world’s largest intact volcanic caldera, harbours dense predator densities.

Key Data Points

FeatureData-Point
Official capitalDodoma
Continent positionEast Africa, south of Equator
Land neighboursKenya, Uganda, Mozambique, Malawi, Zambia, Rwanda, Burundi, DR Congo
Maritime neighboursComoros, Seychelles
Highest peakMt Kilimanjaro – 5,895 m
Largest riverRufiji – drains into Indian Ocean
Nile-source riverKagera – feeds Lake Victoria
Deepest lakeLake Tanganyika – 1,436 m (world’s 2nd)
Largest African lake shareLake Victoria – with Kenya & Uganda
UNESCO WH sitesSerengeti NP; Kilimanjaro NP; Selous Game Reserve
GS-3Environment

5.UNESCO BIOCOM Biodiversity-Livelihood Programme (Madagascar Conservation)

UNESCO

What & Where

BIOCOM: UNESCO flagship for Biodiversity Conservation & Sustainable Natural Resource Management with Integrated Community Development.

Scope: Vocational, governance and ecological actions in Montagne des Français, Marojejy, Andohahela protected areas, Madagascar.

Goal: Link livelihood alternatives to forest, carbon and watershed protection against climate-change stresses.

Quick Facts for MCQs

Livelihood Generation

  • Training: Market-oriented masonry, metalwork, eco-tourism, cooking, basketry replacing extractive forest jobs.
  • Employment: Creates income streams reducing reliance on slash-and-burn fields.
  • Youth focus: Addresses rural unemployment, curbs outward migration.

Community Governance

  • Dina contracts: Customary pacts for forest rules, conflict resolution.
  • Participation: Local committees supervise resource use and benefit sharing.
  • Ownership: Community stewardship fosters compliance over external policing.

Ecological Outcomes

  • Carbon sinks: Regenerating forests enhance sequestration capacity.
  • Watershed health: Vegetation cover curbs erosion, stabilises water flow.
  • Connectivity: Restored corridors aid species movement, biodiversity retention.

Climate Resilience

  • Nature-based solutions: Reforestation buffers floods, landslides in erosion belts.
  • Adaptation: Diversified incomes cushion climate-induced crop failures.
  • Education: Awareness programmes mainstream sustainable practices into daily livelihoods.

Key Data Points

FeatureData-Point
Full formBiodiversity Conservation and Sustainable Natural Resource Management for Integrated Community Development
Launch year2020
Lead agencyUNESCO
Funding partnerKorea International Cooperation Agency (KOICA)
Primary geographyNorthern & Southern Madagascar reserves
Core beneficiariesLocal youth, women, school dropouts
Key livelihood skillsMasonry, metalwork, eco-tourism, cooking, basketry
Forest governance tool“Dina” community contracts
Main threats tackledSlash-and-burn farming, illegal logging
Ecosystem services boostedCarbon sequestration, watershed integrity, habitat connectivity

Related UPSC Prelims PYQs

GEO_GS, GS1 2024PYQ 1

Biosphere Reserve Programme was initiated by:

GEO_GS, GS1 2015PYQ 2

‘BioCarbon Fund Initiative for Sustainable Forest Landscapes’ is managed by the

GS-3Environment

6.Decline of Indigenous Traditional Seeds in India (Indigenous Crop Seeds)

The Hindu
Illustration for Decline of Indigenous Traditional Seeds in India (Indigenous Crop Seeds)

What & Where

Traditional seeds = indigenous, heirloom, open-pollinated crop lines saved/exchanged by farmers for generations.

Traits: rich genetic diversity, climate-hardy, low external inputs, superior micronutrients.

Indian exemplars: Pokkali rice (Kerala), Bhut Jolokia chili (Assam), Red Rice (Manipur), Odisha landrace millets.

Quick Facts for MCQs

Agro-Biodiversity

  • Diversity: 500 + millet landraces conserved by 1,200 Odisha SHGs.
  • Example: 100 + native paddy strains revived by Tamil Nadu’s Kudumbam NGO.
  • Ecological: Red Rice naturally enriches soil fertility.

Market & Consumer

  • Procurement: Only 6 % of rice bought by govt is traditional.
  • Demand: Urban diets pushed quinoa imports up 200 % in five years.
  • Cost: GM cotton seeds tie 80 % farmers to yearly purchases.

Policy & Schemes

  • Mission: Odisha Millet Mission raised ragi procurement 300 %, offers MSP.
  • Storage: India hosts just 40 functional community seed banks.
  • Funding: ₹100 cr set for Uttarakhand ‘Bhaat Protsahan’ Yojana.

Climate Resilience

  • Tolerance: Pokkali rice thrives in saline coastal waters.
  • Efficiency: Desi cotton uses 70 % less water than Bt variant.
  • Stress: Navara rice shrank 30 % after repeated Kerala floods.

Key Data Points

FeatureData-Point
Traditional seed aliasesIndigenous / heirloom / desi
Pollination modeOpen-pollinated, seed true-to-type
Desi cotton water need70 % less than Bt cotton
Finger millet calcium3 × higher than milk
Kodo millet fibre3 × higher than wheat
Govt rice procurement share6 % traditional varieties
R&D funds to wheat-rice-maize90 % of total
Functional community seed banks40 (MSSRF, 2023)
Quinoa import rise (5 yrs)200 %
Navara rice loss in floods30 % decline (Kerala)

Related UPSC Prelims PYQs

GS1 2014PYQ 1

In the context of food and nutritional security of India, enhancing the ‘Seed Replacement Rates’ of various crops helps in achieving the food production targets of the future. But what is/are the constraint/constraints in its wider/greater implementation?

GS1 2018PYQ 2

भारतीय कृषि की परिस्थितियों के संदर्भ में, “संरक्षण कृषि” की संकल्पना का महत्व बढ़ जाता है। निम्नलिखित में से कौन-कौन से संरक्षण कृषि के अंतर्गत आते हैं?

GS-3Environment

7.Indoor Air Quality Concerns in Urban India (Indoor Air Pollution)

The Hindu

What & Where

Definition: Indoor Air Quality (IAQ) denotes air condition inside/around buildings affecting occupants’ health and comfort.

Key pollutants: CO, formaldehyde, asbestos, radon, lead, mould, pesticides, smoke, allergens, PM2.5.

Geography: India records world-highest indoor PM2.5 average 55.18 µg/m³; urban citizens stay indoors 70–90 % time.

Quick Facts for MCQs

Health Implications

  • Morbidity: Stroke, heart disease, COPD, lung cancer linked to prolonged indoor pollutant exposure.
  • Mortality: WHO attributes 3.2 million premature deaths annually to household air pollution.
  • Vulnerability: Women and children endure highest exposure owing to domestic roles and longer indoor stay.

Pollution Sources

  • Combustion: Solid fuels, kerosene, cigarettes, incense release CO, PM2.5, toxic gases indoors.
  • Infiltration: Outdoor particulate matter penetrates poorly sealed urban dwellings through structural gaps.
  • Materials: VOC paints, formaldehyde woods, asbestos sheets, lead plumbing continuously off-gas pollutants.

Mitigation Measures

  • Technology: HEPA air purifiers effectively trap PM2.5 and allergens.
  • Materials: Low-VOC paints, furnishings plus Eco-Niwas Samhita compliant design cut emissions.
  • Alternatives: Shift to LPG, electricity, biogas; deploy pollutant-absorbing plants like spider plant, peace lily.

Policy & Awareness

  • Gap: India lacks enforceable IAQ standards; regulation centred on outdoor Air Act 1981.
  • Initiative: Indian Green Building Council integrates health metrics with Eco-Niwas Samhita guidelines.
  • Outreach: Mass education on ventilation, clean fuels, and safe building materials remains critical.

Key Data Points

FeatureData-Point
India average indoor PM2.555.18 µg/m³ (Dyson 2024)
Global household-air-pollution deaths3.2 million/year (WHO)
Urban indoor time share70–90 % of day
Principal high-risk groupsWomen and children
Main indoor generation activitiesCooking, smoking, incense, chemical cleaners
Ventilation-linked ailmentSick Building Syndrome via CO₂ buildup

Related UPSC Prelims PYQs

GEO_GS, GS1 2022PYQ 1

WHO के वायु गुणवत्ता दिशानिर्देशों के संदर्भ में, निम्नलिखित कथनों पर विचार कीजिए :

GEO_GS, GS1 2022PYQ 2

Which of the following major parameters are considered while deriving the Air Quality Index (AQI) of an area in India?

GS-3Environment

8.Domoic Acid Algal Bloom Impacts Sea Lions (Harmful Algal Blooms)

Down to Earth

What & Where

Harmful algal bloom by diatom Pseudo-nitzschia off California’s Pacific coast

Produces domoic acid neurotoxin that bio-accumulates through marine food web

Fueled by wind-driven upwelling, pollutant discharge, wildfire nutrient runoff

Quick Facts for MCQs

Environmental Impact

  • Sea lions show aggression, spasms, brain damage leading to unprecedented human attacks
  • Domoic acid bioaccumulates, killing fish, birds, other marine mammals
  • Harmful algal blooms disrupt coastal food webs, tourism economies

Climate Linkages

  • Warming-driven stronger winds boost upwelling, surfacing nutrient-rich deep water
  • Wildfire runoff and urban effluents inject extra nitrogen, phosphorus feeding algae
  • Scientists project higher HAB frequency, duration under climate change scenarios

Health Risk

  • Domoic acid causes amnesic shellfish poisoning in humans, memory loss, seizures
  • Authorities impose seafood harvest bans, monitoring during bloom periods
  • Aggressive disoriented sea lions pose direct beach safety hazard

Species Facts

  • Sea lions are pinnipeds with external ear flaps; strong foreflippers for swimming
  • Form large rookeries, vocalize loud barks; majority range in Pacific waters
  • Haul out on shore for rest, mating, pupping, molting

Key Data Points

FeatureData-Point
NeurotoxinDomoic acid
Producer organismDiatom Pseudo-nitzschia
Impacted mammalsSea lions (pinnipeds)
Human risk pathwayContaminated seafood, direct attacks
Physical driverStronger winds → upwelling
Extra nutrient sourcesUrban discharge, Los Angeles wildfire runoff
Core geographyCalifornia coast, Pacific Ocean
Pinniped traitsFin-footed, loud bark, group living
GS-3S&T

9.Saras Mk2 Indigenous Civilian Aircraft (Indigenous Aircraft)

The Hindu
Illustration for Saras Mk2 Indigenous Civilian Aircraft (Indigenous Aircraft)

What & Where

Indigenous aircraft; 19-seater Saras Mk2 designed by CSIR-NAL Bengaluru

Connects tier-2/3 towns under UDAN; operates from short, minimally equipped runways across India

First test flight Dec 2027; build partner HAL; IAF considering 15 units

Quick Facts for MCQs

Tech & Schemes

  • Composite wings, indigenous avionics, CSIR-NAL computer allow modular upgrades including automation, AI
  • Twin-prototype plan hastens DGCA certification, cuts development delay
  • UDAN alignment; short-haul design suits <500 km hinterland routes

Economic Angle

  • Indigenous aircraft lowers forex outgo versus imported ATR, Dornier
  • Suitable for tier-2/3 traffic; boosts passenger volume on low-demand sectors
  • Civil aviation R&D revival may spur local supplier ecosystem, export prospects

Security Dimension

  • IAF expressed interest in 15 units, strengthening civil-military production synergy
  • Indigenous platform aids fleet self-reliance, maintenance security
  • Dual-use roles include air ambulance, surveillance with minor modifications

Key Data Points

FeatureData-Point
Seating capacity19 seats
DeveloperCSIR–NAL (Min S&T)
Manufacturing partnerHindustan Aeronautics Ltd
First flight targetDecember 2027
Earlier variant14-seater Saras, 2004
Intended schemeUDAN regional connectivity
Prototype strategyTwo aircraft for parallel testing
Key materialComposite wings
Indigenous subsystemsAvionics Genesis; brake & ECS by CSIR-NAL
Prospective defence orderIAF interest: 15 aircraft

Related UPSC Prelims PYQs

GS1 2005PYQ 1

Which one of the following pairs is not correctly matched?

GS-3S&T

10.STELLAR Indigenous Power Planning Model (Power Planning Software)

PIB

What & Where

STELLAR: Fully indigenous resource-adequacy software for Indian electricity sector.

Integrates generation, transmission, storage, demand-response planning through FY 2034-35.

Built by Central Electricity Authority; offered free to all States/Discoms nationwide.

Quick Facts for MCQs

Tech & Schemes

  • Chronological modelling simulates load flow, ramp rates, ancillary services minute-by-minute.
  • Endogenous demand response shifts consumer load, optimises renewables and storage.
  • Transparent architecture enables user tweaks, periodic dataset updates.

Legal & Policy

  • Guideline support: tool provides template for mandatory annual state adequacy plans.
  • Centre-state coordination on transmission corridors eased through common dataset.
  • Atmanirbhar push showcases domestic capability in advanced energy analytics.

Economic Angle

  • Least-cost optimisation avoids surplus capacity, lowers system tariffs.
  • Strategic storage sizing curtails renewable spillage; defers peaking investments.
  • Zero-load-shedding objective minimises outage-driven economic losses.

Key Data Points

FeatureData-Point
Full formState-of-the-art Totally indigenously developed Resource adequacy modeL
DeveloperCentral Electricity Authority + The Lantau Group; ADB support
Launch contextFirst Indian resource-adequacy model, 2024
Planning horizonUp to FY 2034-35
Core modulesGeneration, Transmission, Storage, Demand Response, Ancillary Services
Cost to StatesFree, open-access, customizable
Policy linkage2023 Resource Adequacy Guidelines
GS-3S&T

11.BatEchoMon AI Bat Monitoring Device (Wildlife Monitoring Tech)

The Hindu
Illustration for BatEchoMon AI Bat Monitoring Device (Wildlife Monitoring Tech)

What & Where

BatEchoMon = autonomous, AI-powered device capturing and classifying bat echolocation calls in real time.

Developed at Indian Institute for Human Settlements (IIHS), Bengaluru; deployable across urban, peri-urban, forest-edge habitats.

India’s first fully automated bat monitoring system; among few worldwide with on-board recording + classification.

Quick Facts for MCQs

Tech & Innovation

  • Integrated microphone, processor, storage, power; enables stand-alone field deployment.
  • Algorithms isolate ultrasonic calls, match with labelled library for instant species ID.
  • Claimed world’s first unit performing both recording and classification on board.

Conservation & Ecology

  • Facilitates continuous monitoring of insectivorous bat populations and habitat preferences.
  • Suitable for city parks, agricultural fringes, forest corridors to map biodiversity patterns.
  • Real-time data aids early detection of population declines or disease outbreaks.

Research & Data Access

  • Cuts 11 months of manual acoustic analysis to mere hours, accelerating publications.
  • Low cost broadens participation by universities, NGOs, citizen-science groups nationwide.
  • Standardised outputs compatible with global bat call repositories, improving comparative studies.

Key Data Points

FeatureData-Point
Full nameBat Echolocation Monitoring (BatEchoMon)
DeveloperIIHS, Bengaluru
Core processorRaspberry Pi
AI modelConvolutional Neural Networks
Housing size200 × 80 × 80 mm
PowerSolar-charged battery; 8-day runtime
ConnectivityWi-Fi for data push
ActivationAutomatic at sunset
Cost< ⅓ price of imported detectors
OutputSpectrograms + species-wise activity stats
GS-3S&T

12.GenomeIndia National Genetic Mapping Project (Human Genomics)

The Hindu
Illustration for GenomeIndia National Genetic Mapping Project (Human Genomics)

What & Where

Genetic mapping - systematic DNA sequencing to locate variants across populations

GenomeIndia project - decoded genomes of 9 ,772 Indians from 83 endogamous groups, Nature Genetics April 2025

Pan-India coverage - 100+ locations spanning four language families, 30 tribal and 53 non-tribal cohorts

Quick Facts for MCQs

Sampling Scope

  • Demography - balanced sex ratio; parent-child pairs enable fresh mutation identification
  • Linguistics - Indo-European, Dravidian, Tibeto-Burman, Austro-Asiatic families represented nationwide
  • Endogamy - ~4,000 Indian groups create genetically distinct, low-gene-flow clusters

Genetic Insights

  • Mutations - 180 million variants detected, 98 % in non-coding regulatory regions
  • Community signature - unique variant patterns per group owing to centuries of endogamy
  • Global gap - project plugs major under-representation of Indian alleles in world databases

Health Applications

  • Precision care - pharmacogenomics, tailored cancer and cardiovascular risk panels for Indian genotypes
  • Screening tools - low-cost, tribe-specific tests for sickle cell and other recessive disorders
  • Policy input - evidence base for national rare-disease registries and cluster-based genetic counselling

Key Data Points

FeatureData-Point
Total individuals9 ,772
Male : Female4 ,696 : 5 ,076
Population groups83
Tribal groups30
Non-tribal groups53
Locations sampled100+
Total mutations180 million
Autosomal variants130 million
Sex-linked variants50 million
Genome non-coding share98 %
Sequencing institutesIISc, CCMB, IGIB, NIBMG, GBRC
Publication outletNature Genetics
Parent-child triosIncluded to flag de novo mutations
GS-3Security

13.Mk-II Laser Directed Energy Weapon (Directed Energy Weapons)

News on Air
Illustration for Mk-II Laser Directed Energy Weapon (Directed Energy Weapons)

What & Where

Mk-II(A) Laser-Directed Energy Weapon: 30 kW, line-of-sight laser neutralising drones/missiles via thermal structural failure

Developed by DRDO-CHESS, Hyderabad; first field test at Kurnool, Andhra Pradesh

Places India as 4th nation (after US, China, Russia) with operational laser-DEW capability

Quick Facts for MCQs

Technical Specs

  • Beam stability aided by adaptive optics, ensuring sub-cm accuracy at km ranges
  • Silent, stealth emission; minimal signature compared to kinetic interceptors
  • Scalable architecture allows power upgrade without redesigning mount

Strategic Significance

  • Adds layered air-defence tier against low-RCS, low-altitude threats
  • Reduces dependence on costly imported SAMs, boosting deterrence posture
  • Demonstration strengthens export potential under Defence Production Policy

Cost & Logistics

  • Petrol-equivalent shot enables high firing rates without magazine limits
  • Compact powerpack fits standard 8×8 truck, easing forward-area deployment
  • Low maintenance; no explosive warheads, simplifying storage & safety norms

Indigenization Push

  • 100 % indigenous laser source, beam director, fire-control software
  • Collaboration with BEL, L&T, IITs showcases industry-academia synergy
  • Aligns with Atmanirbhar Bharat target of 75 % defence procurement indigenously

Key Data Points

FeatureData-Point
Developer labCHESS, DRDO, Hyderabad
Tested atKurnool, Andhra Pradesh
Laser power30 kilowatt
Target setFixed-wing UAVs, swarming drones, sensors, missiles
Engagement speedBeam travels at light speed; kill in seconds
Firing costFew litres of petrol (vs ₹crore-class missile)
MountingVehicle-based; future air/space variants planned
Global rank4th nation with such capability
Guidance sensorsRadar & Electro-Optic (EO) tracker

Related UPSC Prelims PYQs

ESE_GS 2024PYQ 1

Ministry of Defence signed contract with which one of the following organizations for Upgraded Super Rapid Gun Mount (SRGM) and other equipment for around 3000 crores?

GS-3Security

14.Siachen Day and Operation Meghdoot Significance (Siachen Conflict)

Business Standard
Illustration for Siachen Day and Operation Meghdoot Significance (Siachen Conflict)

What & Where

Siachen Glacier, longest in Karakoram, ~20 000 ft high between Saltoro Ridge and eastern Ladakh

Operation Meghdoot, launched 13 Apr 1984, gave India control; date marked annually as Siachen Day

Zone lies beyond LoC point NJ9842, undefined since 1949 Karachi Agreement, now world’s highest militarised area

Quick Facts for MCQs

Historical Timeline

  • 1949 Karachi line ends at NJ9842 with phrase “thence North to the glaciers”
  • 1972 Simla Agreement retains boundary ambiguity beyond NJ9842
  • 1984 Operation Meghdoot occupies glacier and Saltoro ahead of Pakistan

Security Dimension

  • Control secures Gilgit-Baltistan → Leh route and Karakoram Pass
  • Position blocks Pakistan’s potential land corridor to China via Shaksgam Valley
  • Heights deliver observation and artillery dominance over western Ladakh approaches

Geographical Features

  • Saltoro Ridge southwest of glacier forms main watershed and high-ground advantage
  • Key passes Bilafond La, Sia La, Gyong La enable access to ridge and glacier
  • Environment harsh; designated world’s highest battlefield and militarised zone

Key Data Points

FeatureData-Point
Altitude≈ 20 000 ft
Mountain rangeKarakoram
Adjacent ridgeSaltoro Ridge (SW)
Key passes heldBilafond La, Sia La
First assault13 Apr 1984
Prime MinisterIndira Gandhi
CommemorationSiachen Day – 13 April
Battlefield statusHighest globally
Karachi Agreement1949
LoC formalised1972 Simla Agreement
GS-3SecurityQuick Bite

15.CAPTCHA Online Bot Prevention Mechanism (Cyber Security Tools)

The Hindu

What & Where

CAPTCHA = online challenge-response test separating humans from bots, defending forms, logins, payments

Devised early-2000s by Luis von Ahn at Carnegie Mellon; now ubiquitous across websites, mobile apps, e-commerce

Key variants: Distorted-text (2003), reCAPTCHA using scanned words (2009), Google Invisible reCAPTCHA with behavioural scoring (2014)

Quick Facts for MCQs

Evolution & Types

  • Distorted-text; warped alphanumerics thwart early OCR engines
  • reCAPTCHA; dual-word boxes both verify users and digitise archival texts
  • Invisible reCAPTCHA; monitors cursor moves, clicks, dwell-time to assign human score

Benefits & Limitations

  • Benefits; curbs automated sign-ups, comment spam, credential stuffing, ticket scalping
  • Limitations; strains visually impaired, slows mobile UX, sophisticated ML bots now bypass many tests
  • Trade-off; higher security often inversely impacts accessibility and frictionless design

Alternate Cybersecurity Tools

  • Two-Factor Authentication; SMS, authenticator code or hardware token after password
  • Biometrics; fingerprints, face-ID add non-replicable physical layer
  • Honeypots & behavioural biometrics; decoy fields and keystroke/swipe analytics flag non-human activity

Key Data Points

FeatureData-Point
Full formCompletely Automated Public Turing test to tell Computers and Humans Apart
InventorLuis von Ahn, Carnegie Mellon University
First version year2003 (distorted-text)
reCAPTCHA roll-out2009; leveraged scanned book words
Invisible reCAPTCHA2014; behavioural analysis, no user input
Core use-caseBlocks bots, spam, fake accounts, data scraping
GS-1MiscQuick Bite

16.Permitted and Banned Fruit Ripening Agents (Food Safety Standards)

The Hindu
Illustration for Permitted and Banned Fruit Ripening Agents (Food Safety Standards)

What & Where

Fruit ripening = senescence stage altering colour, texture, flavour, sugars, acidity.

Governed naturally by ethylene; often accelerated using external agents.

In India, FSSAI regulates artificial ripening under Food Safety & Standards Regulations, 2011.

Quick Facts for MCQs

Legal & Policy

  • FSSAI bans calcium carbide use for ripening under FSSR, 2011.
  • Ethylene application permitted up to 100 ppm in designated chambers.
  • Enforcement targets wholesale markets, cold stores, transport nodes.

Health Concerns

  • Calcium carbide exposure causes neurological, respiratory, gastrointestinal damage.
  • Arsenic contamination labelled carcinogenic by WHO and IARC.
  • Acetylene inhalation risk greater for pregnant women, children.

Technology & Operations

  • Controlled ripening chambers maintain 20-25 °C, 90-95 % RH for uniform ripening.
  • Ethylene generators or gas cylinders ensure ppm-level precision.
  • Ethephon solution often sprayed pre-harvest for synchronized maturation.

Key Data Points

FeatureData-Point
Natural ripening hormoneEthylene
Banned ripening agentCalcium carbide
Toxic gas released by carbideAcetylene
Carcinogenic impurities in carbideArsenic, phosphorus
FSSAI ethylene limit≤ 100 ppm
Required application modeControlled ripening chambers, no direct fruit contact
Approved ethylene releasersEthephon, Ethereal
Governing regulation year2011 (FSSR)

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