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Type: Prelims Only

  • Modern Indian History-Events and Personalities

    Remembering Batukeshwar Dutt (1910–1965)

    Why in the News?

    This newscard is an excerpt from the original article published in The Hindu.

    Remembering Batukeshwar Dutt (1910–1965)

    About Batukeshwar Dutt (1910 to 1965):

    • Early Life: Born 18 November 1910 in Burdwan, Bengal Presidency; educated at Theosophical High School and Prithvinath College, Kanpur.
    • Political Affiliations: Joined Hindustan Socialist Republican Association and Naujawan Bharat Sabha; became a close associate of Bhagat Singh during his Kanpur days.
    • Jail Endurance: Known for remarkable resilience in Multan, Jhelum, Trichinopoly, Salem, and Andaman Cellular Jail.
    • Later Imprisonment: Released in 1938; joined Quit India Movement in 1942 and jailed again for four years.
    • Life Post-Independence: Settled in Patna, married Anjali; daughter Bharti became a professor.
    • Death: Died on 20 July 1965 at AIIMS Delhi from bone cancer.
    • Last Wish: Cremated at Hussainiwala, beside Bhagat Singh, Rajguru and Sukhdev.

    Important Revolutionary Activities:

    • Assembly Bombing (8 April 1929): Co-executed the Central Legislative Assembly bombing with Bhagat Singh to protest colonial repression; bombs were non-lethal.
    • Political Message: Threw pamphlets, shouted “Inquilab Zindabad,” and refused to escape, converting the trial into a political platform.
    • Sentencing: Received life imprisonment on 12 June 1929 in the Delhi Assembly Bomb Case.
    • Cellular Jail: Deported to Andamans; repeatedly led hunger strikes demanding recognition of political prisoners.
    • Long Fasts: Undertook multiple prolonged fasts, including two over a month long.
    • Prison Transfers: Shifted through Multan, Jhelum, Hazaribagh, Delhi and Patna jails.
    • Post-Illness Activism: Continued revolutionary involvement even after severe health decline; joined Quit India after release.
    • Cultural Protest: Criticised misrepresentation of revolutionaries in films; approved only Manoj Kumar’s 1965 film Shaheed.

    Association with Bhagat Singh:

    • Early Bond: Met Bhagat Singh in Kanpur and was shaped by his discipline and ideological clarity.
    • Joint Action: Collaborated closely in HSRA; jointly executed the Assembly bombing as symbolic resistance.
    • Hunger Strike: Participated with Singh in the historic 114 day hunger strike for humane jail conditions.
    • After the Martyrdom: News of Singh’s execution (23 March 1931) reached him in Salem jail; he was haunted by visions of Singh.
    • Family Ties: Maintained lifelong connection with Bhagat Singh’s family; Mata Vidyawati stayed with him during his last illness.
    • Comradeship: Supported through final days by HSRA comrades like Shiv Verma, Sadashivrao Malkapurkar, and Kiran Das.
    [UPSC 2022] Consider the following freedom fighters:

    1. Barindra Kumar Ghosh 2. Jogesh Chandra Chatterjee 3. Rash Behari Bose

    Who of the above was/were actively associated with the Ghadar Party?

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

     

  • Animal Husbandry, Dairy & Fisheries Sector – Pashudhan Sanjivani, E- Pashudhan Haat, etc

    Centre announces National Gopal Ratna Awards

    Why in the News?

    The National Gopal Ratna Awards for 2025 has been announced by the Department of Animal Husbandry and Dairying (DAHD) under the Ministry of Fisheries, Animal Husbandry and Dairying.

    About the National Gopal Ratna Awards:

    • Overview: Established in 2021 under the Rashtriya Gokul Mission to promote excellence in dairy management and indigenous breed conservation.
    • Target Groups: Recognises dairy farmers, Dairy Cooperatives, Milk Producer Companies (MPCs), Dairy FPOs, and Artificial Insemination (AI) Technicians for outstanding performance.
    • Breed Focus: Encourages scientific rearing and genetic improvement of indigenous cattle and buffalo breeds with high productivity and economic value.
    • Regional Inclusion: Contains a special category for North Eastern and Himalayan States to strengthen dairy development and acknowledge regional innovation.
    • Institutional Responsibility: Conferred annually by the Union Ministry of Fisheries, Animal Husbandry and Dairying.
    • Award Categories: Best Dairy Farmer (indigenous breeds), Best Dairy Cooperative Society or MPC or FPO, Best AI Technician, and special regional awards for NER/Himalayan States.
    • Selection Parameters: Based on breed improvement results, milk yield, adoption of scientific practices, cooperative performance, and quality of AI service delivery.
    • Participation Scale: Receives thousands of applications annually (e.g., 2081 entries in the current cycle), reflecting wide national engagement.
    • Commemoration: Awards are presented on National Milk Day (26 November), marking the birth anniversary of Dr. Verghese Kurien.

    Award Components and Cash Prizes:

    • Cash Awards: Given only in the first two categories: Best Dairy Farmer and Best Dairy Cooperative/MPC/FPO.
    • Prize Amounts:
      1. First prize- ₹5,00,000
      2. Second prize- ₹3,00,000
      3. Third prize- ₹2,00,000
    • Regional Prizes: Special NER and Himalayan category winners receive ₹2,00,000.
    • Artificial Insemination (AI) Technicians Category: No cash component; recognition only.
    [UPSC 2025] Regarding the Rashtriya Gokul Mission:

    I. It is important for the upliftment of rural poor as majority of low producing indigenous animals are with small and marginal farmers and landless labourers.

    II. It was initiated to promote indigenous cattle and buffalo rearing and conservation in a scientific and holistic manner.

    Which of the statements given above is/are correct?

    Options; (a) I only (b) II only (c) Both I and II* (d) Neither I nor II

     

  • Wildlife Conservation Efforts

    Asiatic Caracal spotted at Ramgarh in Rajasthan’s Jaisalmer

    Why in the News?

    The elusive Asiatic Caracal (Caracal caracal schmitzi) has been rediscovered at Ramgarh, Jaisalmer, reaffirming its survival in the Thar Desert after years of uncertainty.

    Asiatic Caracal spotted at Ramgarh in Rajasthan's Jaisalmer

    About Asiatic Caracal:

    • Scientific Name: Caracal caracal schmitzi, the Asiatic subspecies of the globally distributed caracal species.
    • Distribution: Native to Africa, Middle East, Central Asia, Pakistan, and historically across northwestern and central India, now restricted mainly to Rajasthan and Gujarat.
    • Indian Population: Fewer than 50 individuals survive in India, with small, fragmented groups in the Thar Desert, Ranthambhore landscape, and Kutch region.
    • Habitat: Prefers semi deserts, savannahs, scrublands, steppes, dry forests, and open arid terrains; uses grassland scrub mosaics for hunting and denning.
    • Ecology: A shy nocturnal mesopredator feeding on rodents, hares, birds, and occasionally small ungulates; known for vertical leaps up to 3 metres to strike flying prey.
    • Legal Protection: Listed in Schedule I of the Wildlife Protection Act 1972 and categorised as Least Concern globally but critically sparse within India.
    • Threats: Habitat loss from land conversion, solar parks, linear infrastructure, hunting, and misclassification of grasslands as wastelands reducing viable habitat.
    • Conservation Status in India: Included in the 2021 Species Recovery Plan by National Board for Wildlife (NBWL) and MoEFCC, with urgent need for grassland restoration, monitoring, and community based protection.
    [UPSC 2019] Question: Consider the following statements:

    1. Asiatic lion is naturally found In India only.

    2. Double-humped camel is naturally found in India only.

    3. One-horned rhinoceros is naturally found in India only.

    Which of the statements given above is / are correct?

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

     

  • Wildlife Conservation Efforts

    Researchers to study rare Dolphin-Fisher kinship in Ashtamudi Lake

    Why in the News?

    In Ashtamudi Lake, Kerala, artisanal fishers and Indo-Pacific humpback dolphins (Sousa plumbea) engage in a rare and sophisticated form of human–wildlife cooperative hunting.

    Researchers to study rare Dolphin-Fisher kinship in Ashtamudi Lake

    Unique Dolphin-Fisher in Ashtamudi Lake:

    • Cooperative Hunting: Dolphins herd fish towards artisanal fishers standing in shallow water.
    • Signals: Dolphins give tail-slaps or rolls to signal fishers to cast nets.
    • Mutual Benefit: Fishers get high catches; dolphins feed on escaping fish, forming a rare human–wildlife cooperation system.
    • Documentation: First studied by University of Kerala researchers; Similar systems studied in Brazil and Myanmar.
    • Expected Outcomes: Insights into animal culture, evolution of cooperation, and improved sustainable fishing practices.

    About Indo-Pacific Humpback Dolphins (Sousa plumbea):

    • Distribution: Found from East Africa to India, the Middle East and western Indochina, with major populations along India’s west coast.
    • Appearance: Identified by a large hump under the dorsal fin, dark grey plumbeous body, white mottling, and occasional pink shading; adults grow up to 2.8 m, newborns 97–108 cm.
    • Identification Traits: Long slender beak, dorsal fin perched on a mid-back hump, adults darken with age and often show shark-related scars.
    • Habitat: Prefer shallow waters (<20 m) within 1.5 km of shore; commonly near estuaries, river mouths, bays and nearshore fish concentrations.
    • Group Behaviour: Groups of 50–100 reported in India; shy but often seen during dolphin-watching trips.
    • Diet: Feed mainly on mullet, mackerel, sardines, pomfret and other schooling fish; sometimes exploit fishing nets, increasing entanglement risk.
    • Conservation Status: Vulnerable (IUCN), Appendix I (CITES), NOT LISTED under India’s Wildlife Protection Act (only Ganges and Snubfin dolphins are listed).
    • Colour Variation: Pinkish tint comes from superficial blood vessels used for thermoregulation; calves are dark grey.

    Researchers to study rare Dolphin-Fisher kinship in Ashtamudi Lake

    About Ashtamudi Lake:

    • Location: A brackish estuarine lake in Kerala covering 5,700 hectares; designated a Ramsar Site (2002).
    • Name Origin: “Ashtamudi” refers to its eight channels, forming a gateway to the Kerala backwaters.
    • Hydrology: Fed mainly by the Kallada River; empties into the Arabian Sea via Neendakara estuary.
    • History: Once the ancient port of Quilon mentioned by Ibn Battuta.
    • Flora: Mangroves include Avicennia officinalis, Bruguiera gymnorrhiza, Sonneratia caseolaris; region hosts rare plants like Syzygium travancoricum and Calamus rotang.
    • Fauna: Supports 57 bird species (6 migratory, 51 resident).
    • Sustainable Fishery: Home to India’s first MSC-certified clam fishery (2014).
    • Livelihood & Ecology: Vital for traditional fisheries, estuarine biodiversity, and local livelihood systems.
    [UPSC 2012] Which one of the following is not a lagoon?

    Options: (a) Ashtamudi lake (b) Chilka lake (c) Preiyar lake * (d) Pulicat lake

     

  • Judicial Reforms

    Article 32 of Indian Constitution

    Why in the News?

    At an event marking 75 years of the Constitution, the Chief Justice of India B.R. Gawai, said Ambedkar saw Article 32 as the core provision allowing citizens to approach the Supreme Court for the enforcement of fundamental rights.

    About Article 32:

    • Right to Constitutional Remedies: Article 32 allows any individual to directly approach the Supreme Court for the enforcement of Fundamental Rights under Part III of the Constitution.
    • Judicial Review Power: Empowers the Supreme Court to issue directions, orders, or writs to protect Fundamental Rights, making judicial review an essential constitutional feature.
    • Fundamental Right Status: The right to move the Supreme Court is itself a Fundamental Right and can be suspended only during a National Emergency under Article 359.
    • Jurisdiction: Grants the Supreme Court original but not exclusive jurisdiction; High Courts also have concurrent writ powers under Article 226.
    • Types of Writs Under Article 32:
      1. Habeas Corpus: Commands authorities to produce a detained person before the Court to prevent illegal detention.
      2. Mandamus: Orders public officials or bodies to perform a legal duty they have failed to discharge.
      3. Certiorari: Quashes orders of courts or tribunals that act without jurisdiction or violate due process.
      4. Prohibition: Stops lower courts or tribunals from exceeding their lawful authority during proceedings.
      5. Quo Warranto: Requires a person holding a public post to prove their legal authority, preventing illegal occupation of public office.

    Ambedkar’s Rationale for Article 32:

    • Rights Need Remedies: Ambedkar held that rights are meaningless without enforceable remedies; therefore, Article 32 had to be placed within the Constitution itself.
    • Objective Resolution Gap: He noted that the Objective Resolution (1946) declared rights but failed to guarantee mechanisms for enforcement.
    • “Heart and Soul” of the Constitution: Ambedkar called Article 32 the heart and soul because it transforms Fundamental Rights into legally enforceable claims against the State.
    • Supreme Court as Protector: He believed the Supreme Court must act as the guardian of individual liberty, ensuring no authority can violate fundamental freedoms.
    • Living Constitution Principle: Article 32 works alongside the amendment power under Article 368, ensuring adaptability while preserving core civil liberties.
    [UPSC 2012] Which of the following is included in the original jurisdiction of the Supreme Court?

    1. Dispute between the Government of India and one or more States
    2. A dispute regarding elections to either House of the parliament or that of Legislature of a State
    3. A dispute between the Government of India and Union Territory
    4. A dispute between two or more States.

    Select the correct answer using the codes given below:

    (a) 1 and 2  (b) 2 and 3  (c) 1 and 4* (d) 3 and 4

     

  • North-East India – Security and Developmental Issues

    Army sets up three new garrisons near the Siliguri Corridor

    Why in the News?

    India has set up three new Army garrisons at Dhubri, Kishanganj, and Chopra to secure the vulnerable eastern frontier and protect the Siliguri Corridor amid instability in Bangladesh and rising Chinese activity.

    Army sets up three new garrisons near the Siliguri Corridor

    About Siliguri Corridor:

    • Overview: A narrow land strip connecting mainland India to the Northeast, popularly called the Chicken Neck due to its thin, vulnerable shape.
    • Dimensions: Roughly 60 km long and 17–22 km wide, making it one of India’s most strategically sensitive corridors.
    • Location: Lies in northern West Bengal, bordered by Nepal (west), Bangladesh (south), Bhutan (north), with China’s Chumbi Valley close to the tri-junction.
    • Link to Northeast: The only land route for supplying all eight northeastern states, carrying road, rail, fuel, food and military logistics (except limited Bangladesh transit routes).
    • Strategic Sensitivity: Its narrowness and proximity to the India–China–Bhutan tri-junction make it a potential chokepoint in conflict scenarios.
    • Military Importance: Acts as the primary logistical artery for moving Indian Army troops and equipment toward Sikkim and Arunachal Pradesh, especially during LAC tensions.
    • Security Challenges: Surrounded by multiple international borders, making it prone to illegal immigration, smuggling, cross-border crime, and potential external military pressure.
    • Economic Significance: Key route for trade with Nepal and Bhutan, and supports tourism to Darjeeling, Sikkim and Bhutan.

    About the New Eastern Garrison Deployments:

    • Purpose: Developed to address rising security risks due to political changes in Bangladesh, demographic pressures along the border, and China’s increasing activity near the tri-junction.
    • Locations:
      1. Lachit Borphukan Military Station, Dhubri (Assam)
      2. Forward base, Kishanganj (Bihar)
      3. Forward base, Chopra (West Bengal)
    • Operational Role: Enables continuous surveillance, rapid troop movement, and strengthens defence preparedness across the India–Bangladesh frontier.
    • Local Support: Assam facilitated quick setup of the Dhubri station, named after Ahom general Lachit Borphukan, symbolising regional identity and military determination.

    Drivers Behind the Reinforcement:

    • Regime Change in Bangladesh: Expected shifts in border behaviour, cross-border movement, and potential security spillovers.
    • Illegal Immigration Concerns: Union Home Ministry has flagged demographic changes in border districts linked to cross-border inflow.
    • China’s Expanding Influence:
      • Accelerated LAC military build-up in Arunachal Pradesh.
      • Growing ties with Pakistan and Bangladesh, including a trilateral meet in Kunming, raising regional security concerns.
    • Regional Military Activity: India has conducted major exercises like Poorvi Prachand Prahar and IAF flying displays in Assam to signal operational readiness.
    • Pakistan–Bangladesh Engagements: Recent visit of a Pakistan Navy ship to Chattogram (first since 1971) has added a fresh strategic dimension to India’s eastern security planning.
  • Innovations in Sciences, IT, Computers, Robotics and Nanotechnology

    Quantum Clocks and the Cost of Timekeeping

    Why in the News?

    A new study in Physical Review Letters finds that in quantum clocks the main cost of timekeeping comes from measurement rather than the clockwork itself, reshaping ideas in quantum metrology.

    What are Quantum Clocks?

    • Concept: Quantum clocks are timekeeping devices based on microscopic quantum systems whose transitions – atomic jumps, tunnelling events, or energy-level shifts – act as clock ticks.
    • Quantum Nature: Unlike classical clocks, their evolution is probabilistic, allowing temporary backward ticks due to quantum fluctuations while still needing a mechanism to mark irreversible flow of time.
    • Irreversibility Requirement: A functional clock must create a permanent record distinguishing past from future, despite underlying reversible quantum dynamics.
    • Role of Measurement: Their precision depends on both internal quantum transitions and the classical measurement system used to read them, since measurement converts quantum events into usable time signals.
    • Double Quantum Dot Model: In setups using double quantum dots (DQDs), a single electron tunnels between two nanoscale sites; each tunnelling event forms a discrete tick.
    • Quantum Dot Basis: Quantum dots – recognised by the 2023 Nobel Prize in Chemistry – can confine single electrons precisely, enabling well-resolved quantum transitions.
    • Entropy and Precision: The clock’s internal entropy rises with precision; at equilibrium (equal forward and backward ticks), entropy is zero and the system loses its ability to mark time.

    Recent Findings and Implications:

    • New Demonstration (2025): A Physical Review Letters study built a working quantum clock using a double quantum dot and separately measured entropy from the clockwork and from the measurement process.
    • Key Result: The entropy generated by measurement (via DC sensing and RF reflectometry) was nine orders of magnitude higher than the entropy needed for the electron-tunnelling clock itself.
    • Zero-Entropy Clockwork Still Works: Even when the quantum system produced no entropy, continuous measurement still created an irreversible classical record, allowing timekeeping.
    • Core Insight: The arrow of time in quantum clocks arises mainly from the classical measurement interface, not from the quantum dynamics.
    • 2023 Theoretical Link: Supports earlier findings that quantum measurement is inherently invasive and energy-costly, and that increasing measurement frequency does not always improve accuracy.

    Implications:

    • Thermodynamic Cost: Extracting information from any quantum system has an energy and entropy cost, affecting quantum sensing, quantum metrology, and clock design.
    • Application Outlook: Ultra-precise atomic clocks may be improved by lower-entropy measurement systems, leading to more efficient next-generation timekeeping.
    • Quantum Technologies: Insights are crucial for scalable quantum computers, where reading qubits must be precise yet thermodynamically minimal.
    • Conceptual Implication: Suggests that the microscopic arrow of time emerges from creating readable, irreversible records, rather than solely from quantum evolution itself.
    [UPSC 2022] Which one of the following is the context in which the term “qubit” is mentioned?

    Options: (a) Cloud Services (b) Quantum Computing* (c) Visible Light Communication Technologies (d) Wireless Communication Technologies

     

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

    Sankaradeva’s Vrindavani Vastra to be displayed in Assam

    Why in the News?

    Assam Chief Minister Himanta Biswa Sarma left for London to initiate the process of bringing back the revered Vrindavani Vastra from the British Museum.

    Sankaradeva’s Vrindavani Vastra to be displayed in Assam

    About Vrindavani Vastra:

    • Origin: 16th-century silk tapestry woven under the guidance of Srimanta Sankaradeva at Taniguchi (Barpeta), Assam.
    • Commission: Requested by Cilarai, brother of Koch king Naranarayana.
    • Weavers: Led by disciple Gopal (Mathuradas Budha Ata).
    • Design & Content:
      • Depicts Krishna’s childhood and Vrindavan leelas – birth, adventures, defeat of Kamsa.
      • Multicoloured silk with loom-embroidered captions for each scene.
    • Current Status:
      • Original piece lost; fragments preserved in British Museum, Victoria & Albert Museum (London), Guimet Museum (Paris).
      • Plans are underway to bring it to Assam temporarily in 2027.

    Who was Srimanta Sankaradeva (1449–1568)?

    • About: Assamese Vaishnavite saint, scholar, cultural reformer, and polymath.
    • Religious Contribution:
      • Founded Ekasarana Dharma: Monotheistic Bhakti movement centred on Lord Krishna.
      • Rejected idol worship, caste divisions, Brahmanical orthodoxy, and sacrifices.
      • Motto: Eka Deva, Eka Seva, Eka Biney Nahi Kewa (One God, One Service, None Else).
      • Influenced Koch and Ahom kingdoms.
    • Cultural Contribution:
      • Borgeet (devotional songs).
      • Ankia Naat & Bhaona (religious theatre).
      • Sattriya dance (recognised as a classical dance of India).
      • Brajavali (literary language).
    • Social Reform:
      • Considered the father of modern Assamese identity.
      • Promoted equality, fraternity, and community cohesion.
      • Ended regressive practices (e.g., human sacrifice).
    • Legacy:
      • Combined art, devotion, and social reform into a unified cultural renaissance.
      • Revered as one of Assam’s greatest spiritual and cultural icons.
    [UPSC 2014] With reference to the famous Sattriya dance, consider the following statements:

    1. Sattriya is a combination of music, dance and drama.

    2. It is a centuries-old living tradition of Vaishnavites of Assam.

    3. It is based on classical Ragas and Talas of devotional songs composed by Tulsidas, Kabir and Mirabai.

    Which of the statements given above is/are correct?

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

     

  • Modern Indian History-Events and Personalities

    On Birsa Munda’s birth anniversary, let’s celebrate his fight for dignity

    Introduction

    Birsa Munda and the larger Janjatiya movement occupy a central position in India’s social-political evolution. From colonial-era uprisings to modern state-led empowerment measures, tribal struggles reveal a continuous assertion of identity, land rights, cultural autonomy, and equitable development. The government’s recent initiatives, including the celebration of Janjatiya Gaurav Divas, PM-Janman Mission, tribal-focused infrastructure schemes, and protection of cultural heritage, highlight a renewed emphasis on integrating tribal communities into mainstream governance without erasing their distinctiveness.

    Why in the news?

    Birsa Munda’s birth anniversary gains special significance as India concludes the 150th birth anniversary celebrations of Janjatiya icons during Janjatiya Gaurav Varsh (2021-2024), a landmark recognition of tribal heritage at a national scale. For the first time, tribal leaders and movements are commemorated through a dedicated national day (Janjatiya Gaurav Divas), signalling a major shift from historical marginalisation to mainstream acknowledgment. This comes at a moment when tribal communities, once isolated, are transitioning toward empowered participation through new missions, infrastructure investments, and cultural revival measures highlighted in the article.

    How has the tribal freedom movement shaped India’s socio-political fabric?

    1. Historical Resistance: Tribal communities led sustained struggles against British colonial rule, moneylenders, and local landlords. Example: Movements led by Tilka Manjhi, Rani Gaidinliu, Sidhu-Kanhu, Shaheed Veer Narayan Singh, Tantia Bhil.
    2. Collective Assertion: Demonstrated that tribal revolts were not isolated incidents but powerful collective responses to exploitation.
    3. Cultural Protection: Defended land, culture, and dignity from systemic oppression, shaping India’s early political consciousness.

    Why is Birsa Munda a central figure in Janjatiya consciousness?

    1. Symbol of Dignity: Led the Ulgulan movement, highlighting tribal rights, cultural identity, and fight against colonial injustice.
    2. National Recognition: 2021 decision by the Prime Minister to commemorate his birth anniversary as Janjatiya Gaurav Divas.
      1. Significance: First national-level day dedicated to tribal heritage.
    3. Political Legacy: Birsa Munda’s region later inspired the creation of separate states of Jharkhand, Chhattisgarh, and Uttarakhand, strengthening administrative representation for tribal communities.

    How have recent government initiatives enhanced tribal empowerment?

    1. PM-JANMAN Mission:
      1. Holistic Development: Transforms marginalised tribal communities from welfare-oriented to empowerment-oriented.
      2. Targeted Delivery: Implemented across 75 Particularly Vulnerable Tribal Groups (PVTGs).
      3. Infrastructure: Houses, roads, electricity, drinking water, health, and education.
    2. Dhani Aaba Janjatiya Gaurav Ashram Abhiyan:
      1. Community Spaces: Creates structured social and economic development hubs.
      2. Outcome: Strengthens village-level institutions.
    3. EMRS Expansion:
      1. Educational Access: 728 Eklavya Model Residential Schools sanctioned; 479 operational.
      2. Impact: Bridges educational inequities for tribal children.
    4. Tribal Business Conclave:
      1. Market Linkages: Enhances geotagging of tribal products and economic inclusion.

    How has political leadership supported Janjatiya reforms?

    1. Representation in Governance: Continuous policy focus on tribal welfare
    2. Heritage Recognition:
      • Museums: Ten freedom fighter museums sanctioned; four inaugurated. These recognise tribal contributions to the freedom struggle.
    3. Prime Minister’s Visit to Ulihatu: First Prime Minister to visit Birsa Munda’s birthplace, underscoring symbolic national acknowledgment.

    How are tribal communities moving from isolation to mainstream participation?

    1. Governance Inclusion: Tribal affairs institutionalised via a separate Ministry of Tribal Affairs.
    2. Economic Upliftment: PM-JANMAN and other schemes ensure roads, schools, livelihood support, and market integration.
    3. Cultural Revival: Celebration of Janjatiya Gaurav Varsh fosters awareness of tribal culture across generations.

    Conclusion

    Birsa Munda’s legacy is not confined to the past; it continues to shape India’s pursuit of justice, dignity, and equitable development for tribal communities. As the nation celebrates Janjatiya Gaurav Varsh and strengthens missions like PM-JANMAN, the shift from historic marginalisation to institutional empowerment marks a significant transformation in India’s democratic evolution.

    Value Addition

    Who was Birsa Munda?

    Birsa Munda (1875-1900) was a revolutionary tribal leader, spiritual reformer, and social mobiliser belonging to the Munda tribe of the Chotanagpur plateau. Revered as Dharti Aba (Father of the Earth), he transformed scattered tribal discontent into a structured political uprising.

    Which Rebellion Was He Part Of?

    Ulgulan (The Great Tumult), 1899-1900

    The Ulgulan was the Munda Rebellion led by Birsa Munda against British colonial rule, zamindari oppression, and missionary cultural domination.

    Area of the Movement

    • Entire Chotanagpur region covering
      • Ranchi
      • Singhbhum
      • Gumla
      • Khunti
      • Tamar
      • Sarwada
    • Present-day Jharkhand

    This area was historically inhabited by the Munda, Oraon, Ho, and Santhal tribes, but Birsa’s core following was from the Munda tribe.

    Why did the Ulgulan Revolt Erupt? (Major Reasons)

    1. Land Alienation
      1. Zamindars, moneylenders, and British policies dispossessed Mundas from their traditional khuntkatti lands.
      2. Outsiders (dikus) seized land through taxation, debt, and fraudulent contracts.
    2. Exploitative Agrarian System
      1. Beth-begari (forced labour) imposed by landlords.
      2. High rent, illegal levies, and bonded labour.
    3. Colonial Forest Policies
      1. British restrictions on shifting cultivation, forest access, forest produce, and grazing rights.
    4. Cultural Domination
      1. Missionary influence attempted to alter tribal culture and traditional faith.
      2. Birsa’s movement demanded revival of tribal dharma.
    5. Social Reform and Purification
      1. Birsa preached reform against alcohol, superstition, and internal divisions.
    6. Political Awakening
      1. The community believed Birsa would restore a Golden Age (Sat-Yug) by driving away dikus.
      2. This turned Ulgulan into a millenarian and political movement

    Nature and Features of Ulgulan

    1. Millenarian Movement: Promised liberation and restoration of Munda rule.
    2. Cultural Revival: Emphasised indigenous identity and autonomy.
    3. Armed Resistance: Attacked police stations, zamindars, and Christian mission institutions.
    4. Political Assertion: First organised tribal movement with a coherent ideology.
    5. Mass Mobilisation: Unified thousands of tribal households across Chotanagpur.

    Demands of the Munda Rebellion

    1. Restoration of traditional khuntkatti land rights.
    2. End to forced labour and exploitative tenancy.
    3. Freedom from missionary domination.
    4. Recognition of tribal self-rule.
    5. Expulsion of dikus from tribal land.

    Immediate Result of the Movement

    1. Birsa was arrested in March 1900, imprisoned, and died in Ranchi jail (June 1900).
    2. The rebellion was militarily suppressed by the British.

    Long-Term Outcomes & Legacy

    1. CNT Act, 1908
      1. Chotanagpur Tenancy Act (1908) restricted transfer of tribal land to non-tribals.
      2. Institutionalised protection of tribal land rights.
    2. Rise of Tribal Political Consciousness: Ulgulan transformed tribal resistance from sporadic revolts to a structured political assertion.
    3. Cultural Assertion: Revived pride in tribal identity, customs, and autonomy.
    4. Administrative Reforms: Better regulation of zamindari and recognition of tribal customary laws.
    5. Modern Legacy:
      1. Birsa Munda remains a symbol of indigenous rights.
      2. His legacy contributed to the demand for Jharkhand statehood (2000).
      3. Celebrated annually as Janjatiya Gaurav Divas since 2021.

    PYQ Relevance

    [UPSC 2023] How did colonial rule affect the tribals in India and what was the tribal response to colonial oppression?

    Linkage: The PYQ is relevant as colonial exploitation of land, forests, and culture sparked major tribal revolts like Ulgulan. The article links directly by showing Birsa Munda’s movement as a prime example of tribal resistance to colonial oppression.

  • ISRO Missions and Discoveries

    Study on Lithium-Rich Red Giant Stars and Helium Abundance

    Why in the News?

    A recent study conducted by Indian Institute of Astrophysics (IIA) has discovered a link between Lithium-rich red giant stars and their enhanced helium abundance.

    What are Red Giant Stars?

    • Overview: Evolved stars that have exhausted core hydrogen, causing the core to contract and the outer layers to expand into a large, cool, reddish envelope.
    • Formation Process: Core contraction increases temperature while the outer shell expands and cools, triggering hydrogen shell burning.
    • Temperature and Luminosity: Surface temperature drops to 2,000–5,000 K, but luminosity rises sharply due to vastly increased radius.
    • Internal Fusion: Helium fusion begins in the core, producing heavier elements like carbon and oxygen.
    • Evolutionary Stage: Represents the late life cycle of medium-mass stars; the Sun will enter this phase in about 5 billion years.
    • End Stage: Outer layers are shed into a planetary nebula, leaving a white dwarf remnant that cools over time.

    Key Findings of the Study:

    • New Discovery: IIA established the first spectroscopic link between helium enhancement and lithium enrichment in red giant stars.
    • Data Source: Based on Himalayan Chandra Telescope observations and archival global spectroscopic datasets.
    • Sample Profile: 20 cool giants studied- 18 red giants and 2 supergiants.
    • Helium-Enriched Stars: Six stars showed high helium-to-hydrogen ratios (He/H > 0.1).
    • Distribution: Five were red giants and one a supergiant, showing a trend toward helium enhancement in lithium-rich giants.
    • Scientific Insight: Offers direct evidence of deep internal mixing and nucleosynthesis shaping surface chemical composition.

    What is the correlation between Lithium and Helium?

    • Coupled Enrichment: All helium-enhanced giants were lithium-rich, suggesting a shared internal mixing mechanism.
    • Asymmetry: Not all lithium-rich giants showed helium enhancement, implying lithium can rise without parallel helium increase.
    • Internal Mixing Role: Deep convection likely dredges up newly formed helium and lithium from the interior to the photosphere.
    • Photospheric Evidence: Confirms mixing-driven changes detectable on the stellar surface during the red giant stage.

    Significance of the Findings:

    • First Measurement: Provides the first direct spectroscopic photospheric helium estimates for normal and lithium-rich red giants.
    • Astrophysical Value: Refines understanding of mixing, nucleosynthesis, and energy transport inside red giant branch (RGB) stars.
    • Galactic Evolution: Improves models of how stars contribute heavier elements to the interstellar medium.
    • Methodological Advance: Strengthens indirect helium-measurement techniques for cool stars where helium lines are not visible.
    • Evolutionary Insight: Shows helium enrichment is integral to changes in luminosity, temperature evolution, and mass-loss pathways.
    [UPSC 2023] Consider the following pairs:

    Objects in space: Description

    1. Cepheids : Giant clouds of dust and gas in space

    2. Nebulae : Stars which brighten and dim periodically

    3. Pulsars : Neutron stars that are formed when massive stars run out of fuel and collapse

    How many of the above pairs are correctly matched?

    Options: (a) Only one* (b) Only two (c) All three (d) None