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Type: Prelims Only

  • Blockchain Technology: Prospects and Challenges

    What are Stablecoins?

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Why in the News?

    Globally, stablecoins face regulatory scrutiny; the Bank of England has proposed ownership limits (£10k–£20k for individuals, £10m for businesses) to reduce banking system risks.

    About Stablecoins:

    • Definition: Cryptocurrencies designed to maintain stable value, usually pegged to fiat currency, commodities, or other crypto.
    • Role: Provide price stability, often used to park profits or enable fast, low-cost cross-border transactions without intermediaries.
    • Use: Rarely for retail payments; mainly act as a bridge asset within crypto markets.
    • Types:
      • Fiat-backed (e.g., Tether/USDT).
      • Commodity-backed (gold, silver, oil).
      • Crypto-backed (collateralised by other cryptos).
      • Algorithmic (peg maintained via programmed supply-demand adjustments).
    • Example: Tether (USDT) backed in theory by cash and US Treasuries.
    • Market Growth: Could rise tenfold to $2 trillion by 2028 (Standard Chartered, Apr 2025).

    Risks Associated with Stablecoins:

    • Financial Stability Risk: Vulnerable to bank-run scenarios. Example: TerraUSD collapse (2022) lost 60% peg value.
    • Banking System Impact: Can drain deposits from banks, reducing lending capacity.
    • BIS Concerns:
      • Singleness: Deviations from fiat peg in secondary markets.
      • Elasticity: Limited expansion due to reserve requirements.
      • Integrity: Weak KYC, enabling money laundering, terror financing.
    • Cybersecurity: DeFi-linked stablecoins prone to hacking and theft.
    • Regulatory Gaps: Lack of uniform global standards leads to fraud and accountability issues.

    Global Regulatory Approaches:

    • United States, GENIUS Act (2025): Only insured financial institutions may issue; must hold 1:1 low-risk reserves; AML/CFT compliance required.
    • European Union, MiCA (2024): Regulates E-money Tokens (EMTs) and Asset-Referenced Tokens (ARTs); issuers restricted to authorised EU firms; strict reserve and consumer protection.
    • Hong Kong, Stablecoin Ordinance (2025): Licensing by HK Monetary Authority; full high-quality liquid reserves; strict audits and AML/CFT rules.
    • United Kingdom, Bank of England: Proposed ownership limits to prevent rapid deposit outflows and maintain financial stability.
    [UPSC 2016] With reference to ‘Bitcoins’, sometimes seen in the news, which of the following statements is/are correct?

    1. Bitcoins are tracked by the Central Banks of the countries.

    2. Anyone with a Bitcoin address can send and receive Bitcoins from anyone else with a Bitcoin address.

    3. Online payments can be sent without either side knowing the identity of the other.

    Select the correct answer using the code given below.

    Options: (a) 1 and 2 only (b) 2 and 3 only* (c) 3 only (d) 1, 2 and 3

     

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  • Innovations in Sciences, IT, Computers, Robotics and Nanotechnology

    What is Portable Ion Chromatography?

    Prelims Only | Science Tech | Mains Paper 3: S&T – Applications In Everyday Life

    Why in the News?

    Australian scientists have developed a simpler, portable version of ion chromatography called Aquamonitrix, enabling field-based analysis of nitrate and nitrite ions.

    About Ion Chromatography:

    • Overview: A laboratory technique used to separate and measure ions (charged particles) in a sample.
    • Process: A liquid sample is passed through a long column that separates ions based on their properties.
    • Equipment: Requires large, complex, and costly lab machines.
    • Use in Environment: Detects harmful ions like nitrate and nitrite that pollute soil and water.

    What is Aquamonitrix?

    • Overview: A portable ion chromatograph designed by the University of Tasmania (Australia).
    • Features: Small, battery-operated, and nearly 10 times cheaper than lab equipment.
    • Testing: Students tested it on soil pore water, measuring nitrate and nitrite levels accurately when compared with lab results.
    • How it Works?
      • Soil water collected with a vacuum pump and filtered.
      • Water injected into the Aquamonitrix unit.
      • Uses a sodium chloride solution to carry the sample.
      • Equipped with a UV light detector, showing nitrate and nitrite as clear peaks.
      • Simpler design avoids messy interference from multiple ions.

    Applications:

    • Environment: Monitoring nitrate and nitrite pollution in soil and water.
    • Agriculture: Helps optimise fertiliser use and reduce overuse.
    • Water Safety: Tests drinking water quality on site.
    • Education: Serves as a teaching tool linking classroom to real-world chemistry.
    [UPSC 2024] “Membrane Bioreactors” are often discussed in the context of:

    Options: (a) Assisted reproductive technologies

    (b) Drug delivery nanotechnologies

    (c) Vaccine production technologies

    (d) Wastewater treatment technologies*

     

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  • Festivals, Dances, Theatre, Literature, Art in News

    Nankana Sahib Pilgrimage

    Prelims Only | Art and Culture | Mains Paper 1: Arts & Culture

    Why in the News?

    The Union Ministry of Home Affairs (MHA) has directed State governments not to process applications for Sikh pilgrims’ visit to Nankana Sahib, Pakistan, for the November 2025 birth anniversary (Parkash Gurpurab) of Guru Nanak Dev Ji.

    About Nankana Sahib:

    • Location: Punjab province, Pakistan, near Lahore.
    • Historical Significance: Birthplace of Guru Nanak Dev Ji (1469). Earlier called Rai-Bhoi-Di Talwandi; renamed Nankana Sahib in his honour.
    • Major Shrines:
      • Gurdwara Janam Asthan: Built over Guru Nanak’s birthplace by Maharaja Ranjit Singh (1818–19).
      • Other sites: Gurdwara Patti Sahib, Bal Leela, Mal Ji Sahib, Kiara Sahib, Tambu Sahib, and shrines linked to Guru Arjan (5th Guru) and Guru Hargobind (6th Guru).
    • Cultural Relevance: Pilgrimage site for millions of Sikhs globally; integral to the annual Parkash Gurpurab commemorations.

    About Guru Nanak Dev Ji (1469–1539):

    • Birth & Early Life: Born in 1469 at Talwandi (now Nankana Sahib). Enlightened at Sultanpur Lodhi in 1496.
    • Teachings: Rejected rituals, caste hierarchy, and idol worship; emphasised devotion to one formless God (Nirankar).
    • Core Philosophy:
      • Three Pillars: Naam Japna (remembrance of God), Kirat Karna (honest work), Vand Chhakna (sharing with others).
      • Equality & Justice: Advocated gender equality, social service (Seva), and community dining (Langar).
      • Message: “Ek Onkar Satnam”, Oneness of God and humanity.
    • Death: Passed away in 1539 at Kartarpur Sahib (now in Pakistan). Appointed Guru Angad Dev Ji as successor.
    [UPSC 2013] Consider the following Bhakti Saints:

    1. Dadu Dayal

    2. Guru Nanak

    3. Tyagaraja

    Which among the above was/were preaching when the Lodi Dynasty fell and Babur took over?

    Options: (a) 1 and 3 (b) 2 only* (c) 2 and 3 (d) 1 and 2

     

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  • Historical and Archaeological Findings in News

    Sarnath and UNESCO Nomination

    Prelims Only | Art and Culture | Mains Paper 1: Arts & Culture

    Why in the News?

    ASI will install a revised plaque at Sarnath, crediting Babu Jagat Singh (1787–88) for uncovering its archaeological importance, rather than British archaeologists.

    About Sarnath:

    • Location: Near Varanasi, Uttar Pradesh, at the confluence of the Ganga and Varuna rivers.
    • Religious Importance: After enlightenment at Bodh Gaya, Gautama Buddha delivered the Dhammachakkappavattana Sutta (First Sermon) here in 528 BCE to five disciples, laying the foundation of the Sangha.
    • Key Monuments:
      1. Dhamek Stupa (built c. 500 CE, 39 m high, 28 m diameter).
      2. Ashoka Pillar with Lion Capital (India’s national emblem) and Ashoka Chakra.
      3. Chaukhandi Stupa (Gupta era; octagonal tower added in Mughal period).
      4. Mulagandha Kuti Vihar with frescoes of Buddha’s life.
      5. Sarnath Archaeological Museum with the original Lion Capital and Buddhist sculptures.
    • Archaeology: Excavations over 200 years, including B. R. Mani (2013–14), show Buddhist activity even before Ashoka.
    • Holy Site: One of Buddhism’s Four Holy Places (others: Lumbini, Bodh Gaya, Kushinagar).
    • Historic Role: By the 7th century CE, Sarnath hosted 30 monasteries and over 3,000 monks, flourishing under Mauryan, Kushan, and Gupta patronage.

    Plaque Controversy and ASI Action:

    • Current Plaque: Credits Mr Duncan and Col. E. Mackenzie (1798) for exposing Sarnath, followed by excavations by Cunningham, Kittoe, Oertel, Marshall, Hargreaves, and Sahni.
    • Jagat Singh Claim: Descendant of Babu Jagat Singh (of Benares ruler Chait Singh’s family) petitioned ASI, arguing he first exposed Sarnath’s remains in 1787–88 during a digging exercise.
    • ASI’s Response: ASI confirmed revision; a corrected plaque will be installed soon. Officials noted many pre-1861 plaques reflected British biases.
    • Artifacts: Jagat Singh’s digging uncovered a casket with Buddha relics, now partly housed in the Asiatic Society, Kolkata.

    Cultural Significance:

    • UNESCO Nomination: Officially proposed for the World Heritage List (2025–26 cycle) after 27 years on the tentative list.
    • Policy Context: India projects itself as the land of Buddha; recently issued notices to stop auctions of Buddhist relics abroad.
    [UPSC 2019] In which of the following relief sculpture inscriptions is ‘Ranyo Ashoka’ (King Ashoka) mentioned along with the stone portrait of Ashoka?

    Options: (a) Kanganahalli* (b) Sanchi I (c) Shahbazgarhi (d) Sohgaura

     

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  • Climate Change Negotiations – UNFCCC, COP, Other Conventions and Protocols

    Tropical Forest Forever Facility (TFFF)

    Prelims Only | Enviro & Biodiversity | Mains Paper 3: Conservation, Environmental Pollution & Degradation, Eia

    Why in the News?

    Brazil, the host of COP30, has proposed the Tropical Forest Forever Facility (TFFF) to finance the conservation of standing forests.

    What is Tropical Forest Forever Facility (TFFF)?

    • Nature: A global blended finance fund that pays Tropical Forest Countries (TFCs) per hectare of forest conserved.
    • Adjustments: Deductions made for deforestation or degradation.
    • Equity Provision: At least 20% of payments reserved for Indigenous Peoples & Local Communities (IPLCs).
    • Monitoring: Payments tracked via satellite systems and managed by a TFFF Secretariat.
    • Relation to REDD+: Complements but does not replace REDD+; no carbon credits or project-based offsets.

    Financial Mechanism:

    • Core Instrument: Tropical Forest Investment Fund (TFIF) under a Multilateral Development Bank (likely World Bank).
    • Funding Sources:
      • Sponsors (20%): High-income countries and philanthropies, via concessional loans/grants.
      • Market Investors (80%): Institutional investors, sovereign wealth funds, university endowments.
    • Investment Strategy: Invests in liquid public bonds (US Treasuries), corporate bonds (Apple), green/blue bonds; excludes fossil fuels.
    • Returns & Payments: Earnings from investment funds result-based payments to TFCs, with 2% annual increase for inflation.

    Key Hurdles:

    • Financing Burden: Global South may indirectly finance its own conservation as TFIF invests in their markets with higher borrowing costs.
    • Credit Rating Dependence: Returns hinge on ratings by Fitch, S&P, Moody’s.
    • Geopolitical Risk: Reliance on World Bank (US dominance) may skew control.
    • IPLC Gap: Despite pledges, historically Indigenous Peoples & Local Communities (IPLCs) receive <1% of climate aid.
    • Forest Definitions: Disputes over canopy thresholds (20–30%) may disadvantage sparser forest nations.

    Back2Basics: REDD+ (Reducing Emissions from Deforestation and Forest Degradation plus)

    • Launch: 2008 as a UN collaborative initiative (FAO, UNDP, UNEP); now >65 partner countries.
    • Framework: Under UNFCCC; incentivizes developing nations to cut emissions and improve forest carbon stocks.
    • ‘+’ Component: Adds conservation, sustainable management, and carbon stock enhancement.
    • Objectives: Financial incentives for verified actions in (1) reducing deforestation, (2) reducing degradation, (3) conservation, (4) sustainable management, (5) carbon enhancement.
    • Mechanism: Countries prepare national strategies, monitor/report, and get results-based payments for verified emission reductions.

     

    [UPSC 2025] Which one of the following launched the ‘Nature Solutions Finance Hub for Asia and the Pacific’?

    (a) The Asian Development Bank (ADB)*

    (b) The Asian Infrastructure Investment Bank (AIIB)

    (c) The New Development Bank (NDB)

    (d) The International Bank for Reconstruction and Development (IBRD)

     

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  • Police Reforms – SC directives, NPC, other committees reports

    Supreme Court Guidelines on DNA Evidence in Criminal Cases

    Prelims Only | Governance | Mains Paper 2: Civil Service

    Why in the News?

    The Supreme Court has issued guidelines in the Kattavellai @ Devakar v. State of Tamil Nadu Judgement to standardise DNA handling in criminal cases to prevent contamination and delays after evidence lapses in a major case.

    Key Highlights of the Supreme Court Guidelines:

    • Case Context: It involved rape, murder, and robbery. Court flagged delays in Forensic Science Laboratory (FSL) submission, lack of chain of custody, and risk of contamination.
    • Need: Lack of uniform procedures across states despite scattered rules. Since Police and Public Order are in the State List, Supreme Court intervened for national uniformity.
    • Guidelines Issued:
      • Collection and Documentation: Samples must be packaged properly, labelled with FIR details, and signed by medical officer, Investigating Officer, and witnesses.
      • Transportation: Investigating Officer (IO) must deliver samples to FSL within 48 hours. Reasons for any delay must be recorded.
      • Storage Pending Trial: Packages cannot be opened or resealed without trial court approval.
      • Chain of Custody Register: Maintained until conviction or acquittal. IO responsible for explaining lapses.

    Previous SC Observations on DNA Evidence:

    • Anil v. Maharashtra (2014): DNA reliable only if laboratory procedures are maintained.
    • Manoj v. Madhya Pradesh (2022): DNA rejected as recovery was from open area with contamination risk.
    • Rahul v. Delhi (2022): DNA held inadmissible after being kept in police custody for two months.
    • Pattu Rajan v. Tamil Nadu (2019): DNA value depends on corroborating evidence; absence not fatal.
    • Sharda v. Dharmpal (2003): DNA test orders valid; no violation of Article 21.
    • Das @ Anu v. Kerala (2022): DNA not self-incrimination under Article 20(3). Section 53A CrPC permits collection in rape cases.

    Back2Basics: DNA Profiling

    • Overview: DNA profiling, also called DNA fingerprinting, is a forensic technique to identify individuals by analysing unique DNA regions, mainly Short Tandem Repeats (STRs).
    • How it works: Human DNA is 99.9% identical; the 0.1% variability forms the basis of personal identification.
    • Sources: DNA can be extracted from blood, semen, saliva, hair, bone, skin, or even “touch DNA.”
    • Processes: The process includes isolation, purification, amplification, visualization, and statistical comparison of DNA markers.
    • Methods:  miniSTRs and mitochondrial DNA (mtDNA) help in degraded or limited samples.
    • Legal Status: Treated as expert opinion under Indian Evidence Act Section 45 (now BSA 2023 Section 39). DNA is corroborative, not substantive evidence.

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  • Indian Navy Updates

    [pib] Exercise Pacific Reach, 2025

    Prelims Only | Security Issues | Mains Paper 3: Various Security Forces, Agencies & Their Mandates

    Why in the News?

    INS Nistar, the Navy’s new indigenous Diving Support Vessel, made its maiden port call at Singapore to join the multinational Exercise Pacific Reach 2025.

    About Exercise Pacific Reach:

    • Overview: A biennial, multinational submarine rescue exercise initiated in 1996 (Asia-Pacific).
    • Objective: Enhances cooperation, interoperability, and readiness in submarine rescue.
    • Pacific Reach 2025 (XPR-25): 9th edition, hosted by Singapore.
    • Phases:
      • Harbour Phase: Seminars, Subject Matter Expert Exchanges (SMEE), medical symposium, cross-deck visits.
      • Sea Phase: Live submarine rescue drills, intervention ops, deep-water simulated emergencies, and Mass Evacuation Exercises (MASSEVEX).
    • Participation: 40+ countries (participants + observers).

    India’s Participation:

    • INS Nistar: India’s indigenous Diving Support Vessel (DSV), mothership for Deep Submergence Rescue Vehicle (DSRV).
    • Submarine Rescue Unit (East): Taking part in live rescue drills.
    • Significance: Showcases 80% indigenous capability (built by Hindustan Shipyard Ltd), and positions India as a regional leader in humanitarian submarine rescue.

    Back2Basics: INS Nistar

    • Commissioning: First indigenous DSV, commissioned July 2025 at Visakhapatnam.
    • Design: Built with 80% indigenous content, in line with Aatmanirbhar Bharat.
    • Capability: Supports DSRV rescue ops up to 300 m; equipped with ROVs, hyperbaric lifeboats, subsea cranes, helipad, and medical facilities.
    • Role: Provides endurance for long missions, reinforcing India’s deep-sea rescue & maritime safety architecture.

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  • Electronic System Design and Manufacturing Sector – M-SIPS, National Policy on Electronics, etc.

    PLI Scheme for White Goods

    Prelims OnlySchemes | Economics | Mains Paper 3: Effects Of Liberalization On The Economy, Changes In Industrial Policy and their effects on Industrial Growth

    Why in the News?

    The Centre has announced reopening of the application window for the Production-Linked Incentive (PLI) Scheme for White Goods, following the strong response and success of earlier rounds.

    Note: White goods refer to large household appliances like refrigerators, washing machines, and air conditioners, so named because they were traditionally white.

    About the PLI Scheme for White Goods:

    • Objective: To create a complete component ecosystem for ACs and LED lights, integrating India into global supply chains and boosting domestic manufacturing.
    • Approval: Cleared by the Union Cabinet in April 2021; implemented by the Department for Promotion of Industry and Internal Trade (DPIIT).
    • Duration: Implemented over seven years (FY 2021–22 to FY 2028–29) with a total outlay of ₹6,238 crore.
    • Incentives: Provides 4–6% incentive on incremental turnover (over base year 2019–20) for both domestic sales and exports, applicable for five years to eligible companies.
    • Eligibility:
      • Applicant must be a company incorporated under the Companies Act, 2013.
      • Eligibility depends on achieving threshold levels of incremental sales and investments.
      • Entities availing benefits under any other PLI scheme for the same products are not eligible.
    • Beneficiaries So Far: 83 companies with committed investment of ₹10,406 crore have been approved under the scheme, covering AC and LED components across the entire value chain.
    • Employment and Exports: Expected to create jobs, expand exports, and enhance self-reliance in components that were earlier imported.
    [UPSC 2023] Consider the following statements:

    Statement I: India accounts for 3.2% of global exports of goods.
    Statement II: Many local companies and some foreign companies operating in India have taken advantage of India’s ‘Production-linked Incentive’ scheme.
    Which one of the following is correct in respect of the above statements?
    (a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I
    (b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I
    (c) Statement-I is correct but Statement-II is incorrect
    (d) Statement-I is incorrect but Statement-II is correct *

     

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  • Interstate River Water Dispute

    In news: Cauvery River Dispute

    Prelims Only | Geography | Mains Paper 1: Geographical Features & Their Location

    Why in the News?

    On the Cauvery dispute, Karnataka CM has said that water will be released to Tamil Nadu since the rainfall is adequate, while stressing the Mekedatu Dam’s role in water balance and clean energy.

     

    Back2Basics: Cauvery River

    • Origin & Course: Rises at Talakaveri, Brahmagiri range (Kodagu, Karnataka); flows ~800 km through Karnataka & Tamil Nadu into the Bay of Bengal.
    • Catchment: Spreads across Karnataka, Tamil Nadu, Kerala, Puducherry.
    • Tributaries: Harangi, Hemavati, Kabini, Suvarnavathi, Bhavani.
    • Nature: Perennial river, sustained by both advancing & retreating monsoons.
    • Protected Areas: Cauvery WLS, Biligirirangan Hills, Pushpagiri, Muthathi, Ranganathittu, Bhimeshwari, Nagarhole, Bandipur.

    About Cauvery Water Sharing Dispute:

    • Colonial Origins: Began in 1892 (Madras Presidency vs Mysore); 1924 Agreement (50 years, expired 1974).
    • Post-Independence: Disputes arose with dam projects by Karnataka (1960s–80s); Supreme Court referred to Cauvery Water Disputes Tribunal (CWDT).
    • Interim Phase: Cauvery River Authority (CRA, 1998) issued temporary orders.
    • CWDT Final Award (2013): Tamil Nadu 419 TMC, Karnataka 270, Kerala 30, Puducherry 7.
    • Karnataka’s Obligation: In normal years, release 177.25 TMC to TN, including 123.14 TMC in SW monsoon.
    • Challenges: Disputes sharpen in weak monsoons, triggering use of a “distress formula”.
    • Legal Basis: Governed by Article 262, Inter-State River Water Disputes Act, 1956; Seventh Schedule entries 17 (State List) & 56 (Union List).

    cauvery

    About Mekedatu Dam Project:

    • Location: Deep gorge at Cauvery–Arkavathi confluence near Kanakapura, Karnataka.
    • Design: Balancing reservoir of ~66 TMC capacity.
    • Objectives: Provide Bengaluru drinking water, generate 400 MW hydropower, regulate flows to TN in drought years.
    • Importance: Karnataka argues it benefits both states by ensuring regulated water release.
    • Opposition: Tamil Nadu objects, fearing reduced downstream availability.
    • Current Status: Karnataka insists on moving ahead, requiring Centre & TN’s clearance.
    [UPSC 2022] Gandikota canyon of South India was created by which one of the following rivers?

    Options: (a) Cauvery (b) Manjira (c) Pennar* (d) Tungabhadra

     

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  • Places in news: Erra Matti Dibbalu

    India MappingPrelims Only | Geography | Mains Paper 1: Geographical Features & Their Location

    Why in the News?

    This newscard is an excerpt from a photo published in ‘The Hindu’.

    About Erra Matti Dibbalu:

    • Location: Found between Visakhapatnam and Bheemunipatnam in Andhra Pradesh, stretching 5 km along the coast, with widths ranging from 200 m to 2 km.
    • Meaning: In Telugu, “Erra Matti” means red soil and “Dibbalu” means mounds, describing the reddish sand dunes.
    • Geological Heritage: Listed among the 34 National Geological Heritage Monument Sites of India by the Geological Survey of India (GSI).
    • Formation: Created around 12,000–18,500 years ago through the combined effect of tectonic activity (2.5 million–11,000 years ago), sea-level changes, monsoonal variability, and global climatic shifts.
    • Composition: Derived mainly from Khondalite rocks of the Eastern Ghats hinterland, with the red colour due to oxidation of iron-rich sediments.

    Significance:

    • Geological Value: Acts as a paleo-environment indicator, providing evidence of climate change, sea-level fluctuations, and coastal evolution during the late Quaternary period.
    • Archaeological Importance: Artefacts from Mesolithic and Neolithic periods and sediment layers dating back to the Late Pleistocene epoch have been found here.
    • Conservation Status: Declared a National Geo-heritage Monument (2016) and included in UNESCO’s Tentative List of World Heritage Sites (2025) for global recognition and protection.
    • Unique Landscape: Features badland topography with sand dunes, buried channels, gullies, and dendritic drainage patterns.
    • Rare Formation: Only two other similar red sand dune systems exist globally—the Teri dunes in Tamil Nadu and one site in Sri Lanka.
    [UPSC 2014] When you travel in Himalayas, you will see the following:

    1. Deep gorges 2. U-turn river courses 3. Parallel mountain ranges 4. Steep gradients causing land sliding

    Which of the above can be said to be the evidence for Himalayas being young fold mountains?

    Options: (a) 1 and 2 only (b) 1, 2 and 4 only (c) 3 and 4 only (d) 1, 2, 3 and 4*

     

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