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  • 79th Foundation Day of Bureau of Indian Standards 

    Why in the News?

    The 79th Foundation Day of the Bureau of Indian Standards was celebrated, where the Union Minister highlighted BIS’s transition from a regulatory role to a facilitative and enabling institution, aligned with ease of doing business and promotion of a quality culture.

    Bureau of Indian Standards

    • India’s National Standards Body
    • Responsible for standardisation, certification, hallmarking, and quality assurance
    • Protects consumer interests and enhances global competitiveness of Indian products

    Establishment and Legal Framework

    • Established in 1987
    • Came into force on 1 April 1987
    • Governed by the BIS Act, 2016
    • Headquarters at New Delhi

    Historical Evolution

    • 1947 Indian Standards Institution established
    • 1952 to 1956 ISI Certification Marks Scheme launched
    • 1987 ISI transformed into BIS with expanded mandate
    • 2016 BIS Act strengthened consumer participation and international alignment

    Significance

    • Strengthens quality infrastructure in India
    • Supports Make in India and export competitiveness
    • Promotes consumer safety and trust
    • Aligns Indian standards with global best practices

    Prelims Pointers

    • BIS is India’s national standards authority
    • ISI mark originated before BIS
    • BIS Act 2016 expanded consumer role
    • Hallmarking is mandatory for precious metals
    • Digital standardisation is a recent reform focus
    [2017] Consider the following statements: 

    1. The Standard Mark of Bureau of Indian Standards (BIS) is mandatory for automotive tyres and tubes

    2. AGMARK is a quality Certification Mark issued by the Food and Agriculture Organisation (FAO)

    Which of the statements given above is/are correct? 

    (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

  • Indian Scientists Simulate Mpemba Effect Using Supercomputers 

    Why in the News?

    Indian scientists have developed the first supercomputer powered simulation to successfully capture the Mpemba effect, the counterintuitive phenomenon where hot water freezes faster than cold water. The achievement was announced by the Ministry of Science and Technology.

    What is the Mpemba Effect

    • A physical phenomenon in which hot water freezes faster than colder water under certain conditions
    • Named after Erasto Mpemba, a Tanzanian student who reported the effect in the 1960s
    • Long considered a scientific paradox due to lack of a complete theoretical explanation

    Key Findings

    • Simulation successfully reproduced the Mpemba effect in water
    • Demonstrated that the effect can also occur in fluid to solid phase transitions beyond water
    • Confirms that non equilibrium thermodynamics plays a crucial role in freezing dynamics

    Scientific Significance

    • Resolves a long standing physical paradox through computational physics
    • Enhances understanding of phase transitions and heat transfer
    • Opens new avenues in materials science and condensed matter physics
    • Shows the power of supercomputing in theoretical and experimental validation

    Institutional Context

    • Research supported by India’s advanced scientific infrastructure
    • Aligns with national efforts in computational science, physics research, and supercomputing missions

    Prelims Pointers

    • The Mpemba effect refers to the faster freezing of hot water compared to cold
    • The phenomenon lacks a single universal explanation
    • Supercomputer simulations help study processes at atomic and molecular scales
    • The effect may exist in systems other than water
    [2011] The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason? 

    (a) Ice is a bad conductor of heat

    (b) Since the surface of the lake is at the same temperature as the air, no heat is lost

    (c) The density of water is maximum at 4°C

    (d) None of the statements (a), (b) and (c)

  • Indian Railways Becomes World’s Largest Electrified Rail

    Why in the News?

    Indian Railways has become the largest electrified rail network in the world, with about 99.2 percent of its broad gauge network electrified as of November 2025.

    About Indian Railways Electrification Achievement

    • Indian Railways is India’s national transporter and one of the world’s largest railway networks
    • It has achieved near complete electrification of its broad gauge routes
    • The milestone was achieved under Mission 100 percent Railway Electrification

    Background

    • Railway electrification in India began in 1925
    • Mission mode acceleration started after 2014

    Objectives of Mission 100 percent Railway Electrification

    • Eliminate diesel traction
    • Shift to clean electric traction
    • Reduce carbon emissions and air pollution
    • Lower fuel import dependence
    • Improve speed, reliability, and operational efficiency

    Key Features and Data

    • About 99.2 percent of nearly 70,000 route kilometres electrified
    • Electrification speed increased from
      1.42 km per day during 2004 to 2014
      More than 15 km per day during 2019 to 2025
    • 25 States and Union Territories fully electrified
    • Only around 0.8 percent network remains non electrified

    Renewable Energy Integration

    • Solar capacity increased from 3.68 MW in 2014 to about 898 MW in 2025
    • Supports cleaner traction and lower operational emissions
    • Aligns with India’s renewable energy and climate goals

    Technological Advancements

    • Use of Automatic Wiring Trains
    • Mechanised Overhead Equipment foundation systems
    • Faster and safer electrification with reduced manual intervention
    [2025] Consider the following statements: 

    I. Indian Railways have prepared a National Rail Plan (NRP) to create a future ready railway system by 2028

    II. ‘Kavach’ is an Automatic Train Protection system developed in collaboration with Germany. 

    III. ‘Kavach’ system consists of RFID tags fitted on track in station section. 

    Which of the statements given above are not correct? 

    (a) I and II only (b) II and III only (c) I and III only (d) I, II and III

  • Remarkable New Species Discovered in India in 2025

    Why in the News?

    In December 2025, Indian scientists announced the discovery of multiple new species across diverse ecosystems, ranging from the Eastern Himalayas to the Western Ghats, highlighting India’s rich and still underexplored biodiversity.

    Key New Species Discovered

    Bridgeoporus kanadii

    Type: Macro fungi
    Discovery region: West Kameng district, Arunachal Pradesh
    Habitat: Old growth Abies fir trees
    Key features:

    • Thick, leathery and massive fruiting body
    • Extremely sturdy, capable of bearing human weight
      Significance:
    • Indicates high fungal diversity in Eastern Himalayan forests
    • Highlights ecological value of old growth conifer ecosystems

    Rhinophis siruvaniensis

    Type: Non venomous shieldtail snake
    Family: Uropeltidae
    Discovery region: Siruvani Hills, Kerala, Western Ghats
    Key features:

    • Fossorial or burrowing lifestyle
    • Specialized tail shield for digging and protection
      Significance:
    • Adds to endemic reptile diversity of the Western Ghats
    • Reinforces the region as a global biodiversity hotspot

    Neelus sikkimensis

    Type: Springtail or Collembola
    Discovery region: High altitude cold desert soils of Sikkim, Eastern Himalayas
    Key features:

    • Wingless arthropod with a jumping organ called furcula
    • First record of the genus Neelus in India
      Significance:
    • Identified by Zoological Survey of India
    • Global species count of Neelus expanded to eight
    • Indicates biodiversity even in extreme cold environments

    Parasynnemellisia khasiana

    Type: Fungus
    Taxonomy: Completely new genus and species
    Discovery region: Khasi Hills near Mawsynram, Meghalaya
    Habitat: Dense bamboo forests in ultra high rainfall zones
    Key features:

    • Grows in association with bamboo ecosystems
    • Adapted to one of the wettest regions on Earth
      Significance:
    • Demonstrates unexplored microbial diversity of Northeast India

    Dolomedes indicus

    Type: Fishing spider
    Discovery region: Wayanad and Lakkidi, Western Ghats, Kerala
    Key features:

    • Semi aquatic spider
    • Can skate on water surfaces
    • Hunts aquatic insects and small fish

    Significance:

    • First confirmed fishing spider species in India
    • Highlights freshwater dependent arthropod diversity

    Ophiorrhiza mizoramensis

    Type: Flowering shrub
    Family: Rubiaceae or coffee family
    Discovery region: Murlen National Park, Mizoram
    Key features:

    • Grows up to one metre
    • Dark purplish pink tubular flowers
    • Unique stigma lobe structure

    Conservation status:

    • Provisionally assessed as Critically Endangered
    • Fewer than 200 mature individuals recorded

    Overall Significance

    • Confirms India as a megadiverse country
    • Highlights importance of Eastern Himalayas and Western Ghats
    • Strengthens case for habitat conservation and taxonomy research
    • Shows climate resilient and niche specific species evolution

    Prelims Pointers

    • Western Ghats and Eastern Himalayas are global biodiversity hotspots
    • New genus discovery indicates unexplored fungal diversity
    • High altitude ecosystems also host unique micro fauna
    • Many new species face immediate conservation threats
    [2022] With reference to ‘Gucchi’ sometimes mentioned in the news, consider the following statements: 

    1. It is a fungus. 

    2. It grows in some Himalayan forest areas

    3. It is commercially cultivated in the Himalayan foothills of north-eastern India

    Which of the statements given above is correct? 

    (a) 1 only (b) 3 only (c) 1 and 2 (d) 2 and 3

  • [7th January 2026] The Hindu OpED: At a crossroads: On Iran’s unrest, its re-engagement with the world

    PYQ Relevance

    [UPSC 2018] In what ways would the ongoing US-Iran Nuclear Pact Controversy affect the national interest of India? How should India respond to this situation?

    Linkage: It falls under GS II-Effect of policies and politics of developed countries on India’s interests, focusing on sanctions, energy security, strategic autonomy, and West Asia stability. Iran’s unrest and economic collapse show how the U.S.-Iran nuclear dispute disrupts regional stability and directly affects India’s energy security and connectivity interests.

    Mentor’s Comment

    Iran is witnessing its most serious internal crisis since the 2022-23 unrest, marked by economic collapse, mass protests, and renewed geopolitical pressure. The current phase of instability is unfolding in the immediate aftermath of a brief but intense war with Israel and amid heightened U.S. coercive posturing. This editorial examines how domestic economic fragility, external pressures, and governance constraints have converged to place Iran at a critical crossroads. Here repression risks deepening instability, and reform coupled with global re-engagement remains the only viable exit.

    Why in the News?

    Iran is facing its largest nationwide protests since the 2022-23 Mahsa Amini unrest, triggered initially by a strike by Tehran shopkeepers on December 28 against the sharp collapse of the Iranian rial. What makes this moment significant is the convergence of economic freefall, post-war vulnerability, and overt foreign signalling, including claims by Israel’s Mossad of field-level presence and explicit U.S. threats of force. At least 12 protest-related deaths have been reported within a week, underscoring the scale and volatility of the crisis.

    Introduction

    Iran’s current unrest is not an episodic protest cycle but a manifestation of structural economic decay and political rigidity. The collapse of the rial, runaway food inflation, declining oil revenues, and daily power outages have eroded regime legitimacy. While President Masoud Pezeshkian has signalled limited social relaxation, especially on morality policing, his administration remains constrained on economic reform and national security. The state’s reliance on repression and attribution of unrest to foreign interference risks aggravating an already combustible situation.

    What triggered the current wave of protests?

    1. Currency Collapse: Sharp fall in the Iranian rial since the June 2025 war directly affected traders and households, triggering the initial strike.
    2. Economic Shock Transmission: Trader unrest rapidly expanded into nationwide protests, indicating deep-rooted economic distress beyond urban commercial classes.
    3. Continuity with Past Unrest: Represents the largest mobilization since the Mahsa Amini-led protests of 2022-23, signalling unresolved grievances.

    How severe is Iran’s current economic crisis?

    1. Food Inflation: Reached 64% in October, the second highest globally after South Sudan, indicating acute cost-of-living stress.
    2. Currency Devaluation: Rial has lost 60% of its value since the June 2025 war, eroding savings and purchasing power.
    3. Oil Export Decline: 2025 oil exports fell by ~7% compared to the 2024 average, tightening fiscal space.
    4. Energy Shortages: Daily power outages have become routine, reflecting infrastructure stress and governance failure.

    How is post-war geopolitics amplifying domestic instability?

    1. War Aftermath: The unrest comes six months after a 12-day Iran-Israel war, which already strained Iran’s economy and security apparatus.
    2. Israeli Signalling: Mossad publicly claimed operational presence “in the field” with protesters, intensifying regime paranoia.
    3. U.S. Threat Posture: U.S. President Donald Trump warned on January 2 that the U.S. was “locked and loaded” to use force if protesters were killed.
    4. External Pressure Effect: Foreign threats have reinforced regime defensiveness while worsening civilian suffering.

    How is the Iranian state responding internally?

    1. Repression: Security warnings against “rioters” and reported deaths indicate reliance on coercive control.
    2. Limited Social Relaxation: President Pezeshkian has relaxed morality police enforcement, signalling tactical social easing.
    3. Economic Paralysis: The President admitted in December that the government was “stuck” and incapable of performing “miracles”.
    4. Blame Externalisation: Default regime response continues to attribute crises to foreign interference.

    Why is repression proving counterproductive?

    1. Cycle of Crisis: Economic deterioration combined with repression is reinforcing instability rather than restoring order.
    2. Public Anger Reservoir: Years of shrinking economic opportunity and erosion of political and personal freedoms have accumulated latent discontent.
    3. Ideological Fatigue: Religion and nationalism are no longer sufficient buffers against economic hardship.
    4. Legitimacy Erosion: Persistent hardship weakens the regime’s social contract and coercive credibility.

    What path does the editorial suggest forward?

    1. Domestic Reform: Calls for tackling corruption and initiating meaningful economic reform.
    2. Empowering Moderates: Urges external actors to engage and empower President Pezeshkian, not undermine him.
    3. Re-engagement with the World: Emphasises that isolation and coercion deepen instability.
    4. Strategic Restraint: Warns against threats issued on Israel’s behalf, which harden regime paranoia.

    Value Addition: Regional and Global Political Impact of Iran’s Imbroglio

    Impact on the Middle East

    1. Regional Power Balance: Weakens Iran’s capacity to project influence across Iraq, Syria, Lebanon, and Yemen, altering the regional balance vis-à-vis Israel and Gulf Arab states.
    2. Proxy Network Stress: Economic strain constrains Iran’s ability to sustain allied non-state actors, increasing volatility and fragmentation within proxy theatres.
    3. Escalation Risks: External pressure combined with internal unrest raises incentives for diversionary foreign policy actions, heightening conflict risks in the Gulf and Levant.
    4. Israel-Iran Confrontation: Mossad’s public signalling and Iran’s internal vulnerability increase the likelihood of covert and overt escalatory cycles.
    5. Gulf Security Architecture: Reinforces security anxieties among Gulf Cooperation Council states, accelerating defence alignment and external security dependence.

    Impact on India

    1. Energy Security: Iran’s instability and sanctions-related disruptions affect global oil supply dynamics, exposing India to price volatility and import uncertainty.
    2. Connectivity Projects: Political instability undermines strategic projects such as Chabahar port, affecting India’s access to Afghanistan and Central Asia.
    3. Strategic Autonomy: Intensified U.S.-Iran tensions constrain India’s diplomatic space, complicating balanced engagement with West Asia, Israel, and the U.S.
    4. Diaspora and Trade: Regional instability increases risks for Indian diaspora, remittances, and trade flows across the Gulf region.
    5. Regional Stability Interest: Sustained unrest weakens India’s vision of a stable West Asia essential for economic and maritime security.

    Impact on the Global Order

    1. Sanctions Fatigue: Highlights the limits of coercive economic tools, demonstrating how prolonged sanctions can erode civilian welfare without political moderation.
    2. Norms of Intervention: U.S. threats of force linked to internal unrest blur lines between humanitarian concern and strategic coercion.
    3. Energy Markets: Iran-related instability contributes to structural volatility in global energy markets, affecting inflation and growth worldwide.
    4. Multipolar Contestation: Iran’s crisis becomes another arena for great-power signalling, deepening geopolitical fragmentation.
    5. Authoritarian Resilience Debate: Raises questions about the sustainability of repression-led governance under prolonged economic stress.

    Conclusion

    Iran’s current unrest reflects a convergence of economic collapse, governance rigidity, and external pressure. Continued reliance on repression and isolation risks deepening internal instability and regional spillovers. Sustainable stability lies in economic reform, political accommodation, and calibrated international re-engagement rather than coercive containment.

  • The Chinese are using ambiguity on the LAC and unsettles borders as a pressure point against us

    Introduction

    The Line of Actual Control is not a mutually demarcated boundary but a result of differing historical perceptions. China has progressively shifted from negotiating boundary clarification to leveraging uncertainty to alter ground realities. This strategy enables incremental territorial assertion without triggering full-scale conflict, fundamentally altering the nature of India-China border management.

    Why in the news?

    India-China border tensions persist despite multiple agreements and disengagement talks, underscoring a deeper structural problem: the absence of a mutually accepted alignment of the LAC. China is no longer merely disputing territory but strategically weaponising ambiguity itself. Unlike earlier periods where border negotiations aimed at eventual settlement, China now treats unsettled borders as a permanent pressure lever, enabling coercion below the threshold of war. This marks a sharp departure from confidence-building frameworks established since the 1990s and highlights a major failure of past assumptions that economic engagement would moderate China’s territorial behaviour.

    How did the LAC originate and why does ambiguity persist?

    1. Historical Construction: The LAC emerged after the 1962 conflict as a de facto line reflecting troop positions rather than a legally negotiated boundary.
    2. Divergent Interpretations: China interprets the LAC using selective historical maps, while India relies on watershed principles and traditional usage.
    3. Absence of Final Alignment: No exchange of mutually accepted maps has occurred for the entire LAC, particularly in the Western and Eastern sectors.
    4. Strategic Utility of Ambiguity: China benefits from uncertainty, as clarity would constrain its manoeuvrability on the ground.

    How has China operationalised ambiguity as a strategic tool?

    1. Grey-Zone Operations: Incremental troop movements, patrol obstruction, and infrastructure build-up alter facts without overt combat.
    2. Salami-Slicing Tactics: Small, cumulative actions avoid escalation while steadily shifting the status quo.
    3. Denial of Disengagement: China accepts disengagement in principle but resists restoration of pre-2020 positions.
    4. Psychological Pressure: Persistent friction imposes military, economic, and diplomatic costs on India.

    Why is Arunachal Pradesh central to China’s claim strategy?

    1. Rejection of McMahon Line: China contests the eastern boundary despite historical acceptance by Tibet’s representatives.
    2. Political Rebranding: Use of alternative nomenclature seeks to delegitimise India’s sovereignty claims.
    3. Diplomatic Signalling: Repeated objections to Indian infrastructure and political activities reinforce claims.
    4. Negotiation Leverage: Eastern sector claims are used to extract concessions elsewhere.

    What role have border agreements played and why have they failed?

    1. 1993 and 1996 Agreements: Established peace and tranquillity but avoided boundary clarification.
    2. Confidence-Building Focus: Emphasised troop restraint rather than territorial settlement.
    3. Breakdown Post-2020: Galwan clashes exposed the fragility of trust-based arrangements.
    4. Structural Limitation: Agreements regulate behaviour but do not resolve competing perceptions of the LAC.

    How has India responded to China’s pressure strategy?

    1. Firm Rejection of Claims: India has consistently rejected Chinese assertions in Arunachal Pradesh.
    2. Infrastructure Development: Accelerated border roads and logistics to reduce asymmetry.
    3. Military Posture Adjustment: Forward deployment and sustained presence across friction points.
    4. Diplomatic Signalling: Insistence on restoration of status quo ante as a prerequisite for normalisation.

    Conclusion

    The continued absence of a clearly delineated Line of Actual Control has transformed the India-China boundary from a negotiable dispute into a strategic pressure instrument. China’s deliberate exploitation of ambiguity has weakened confidence-building mechanisms and normalised coercion below the threshold of war. For India, effective border management now requires not only military preparedness and infrastructure development but also sustained diplomatic firmness anchored in restoration of the status quo and long-term boundary clarity.

    PYQ Relevance

    [UPSC 2020] Analyze internal security threats and transborder crimes along Myanmar, Bangladesh and Pakistan borders including Line of Control (LoC). Also discuss the role played by various security forces in this regard. 

    Linkage: UPSC has repeatedly asked questions on border area management and transborder security threats, particularly along the LoC and international borders. In the current context, the LAC has emerged as an equally critical security frontier, where China’s use of ambiguity and grey-zone pressure mirrors the management of persistent, low-intensity threats without escalation.

  • How Haryana turned around sex ratio at birth, now close to national average

    Introduction

    Sex ratio at birth reflects deep-rooted social preferences, access to technology, and effectiveness of governance. Haryana’s demographic profile was historically distorted due to entrenched son preference and misuse of prenatal diagnostic technologies. The recent improvement indicates a shift driven by administrative vigilance, legal enforcement, and behavioural correction mechanisms, rather than mere awareness campaigns.

    Why in the News

    Haryana’s sex ratio at birth (SRB) rose to 923 females per 1,000 males in 2023, bringing the state close to the national average of 933. This marks a sharp reversal from its historical position among India’s worst-performing states. The improvement follows two decades of sustained interventions, including enforcement against illegal sex selection, medical monitoring, inter-departmental coordination, and district-level surveillance. The state also recorded its best SRB performance in five years, signalling structural rather than episodic change.

    How severe was Haryana’s demographic imbalance earlier?

    1. Historically low SRB: Haryana ranked among the worst Indian states during the 2000s due to female foeticide.
    2. Technology misuse: Easy access to ultrasound and weak regulation facilitated sex-selective abortions.
    3. Structural bias: Son preference reinforced by inheritance practices and patriarchal norms.
    4. National comparison: Haryana consistently performed below the national SRB average for years.

    What institutional measures drove the turnaround?

    1. Legal enforcement: Strict implementation of the (Pre-Conception and Pre-Natal Diagnostic Techniques (PCPNDT) Act, 1994, including registration checks and surprise inspections.
    2. Criminal accountability: Filing of over 1,375 FIRs against illegal practitioners since 2014.
    3. Administrative coordination: Weekly reviews involving health, police, and district administrations.
    4. Tracking mechanisms: Continuous monitoring of ultrasound centres and pregnancy outcomes.

    How did district-level governance contribute?

    1. District surveillance: Identification of high-risk districts and targeted enforcement.
    2. Best-performing districts: Panchkula, Jhajjar, and Rewari crossed 940 SRB.
    3. Worst-performing districts: Palwal, Faridabad, and Panipat remained below the state average, indicating uneven progress.
    4. Outcome-based reviews: Regular district rankings created competitive accountability.

    What role did monitoring of medical practices play?

    1. Ultrasound regulation: Tight scrutiny of ultrasound centres and equipment movement.
    2. Pregnancy audits: Tracking of repeat abortions and abnormal sex ratios at facility levels.
    3. Professional deterrence: Suspension and prosecution of erring doctors.
    4. Sustained vigilance: Monitoring continued even during COVID-19 disruptions.

    Why is this shift considered structurally significant?

    1. Consistency over time: Improvement sustained across multiple years rather than isolated spikes.
    2. Behavioural correction: Reduced acceptance of sex-selective practices at the community level.
    3. Policy credibility: Demonstrates effectiveness of law when combined with administrative resolve.
    4. Replication potential: Offers a governance model for other demographically stressed states.

    Value Addition: Sex Ratio at Birth in India 

    1. National SRB: Approximately 933 females per 1,000 males.
    2. Regional variation: Northern and north-western states historically record lower SRB.
    3. Underlying causes: Son preference, declining fertility, and access to diagnostic technology
    4. Policy instruments: Beti Bachao Beti Padhao, PCPNDT Act, and conditional cash transfer schemes.
    5. Trend: Gradual national improvement, but inter-state disparities persist.

    Conclusion

    Haryana’s improvement in sex ratio at birth underscores that deep-rooted gender bias is not irreversible when governance moves beyond symbolic welfare to sustained enforcement and accountability. The experience demonstrates that demographic correction requires a long-term, law-driven, and institutionally coordinated approach, reinforcing that gender justice must be ensured at the earliest stage of life for social transformation to be durable.

    PYQ Relevance

    [UPSC 2021] “Though women in post-Independent India have excelled in various fields, the social attitude towards women and feminist movement has been patriarchal.” Apart from women education and women empowerment schemes, what interventions can help change this milieu?

    Linkage: Persistent patriarchal attitudes, reflected in practices like female foeticide and skewed sex ratios at birth, show that women’s progress has not translated into social acceptance. Haryana’s SRB turnaround demonstrates that strict legal enforcement, behavioural regulation, and institutional accountability are critical interventions.

  • 1000 Years of Survival of Somnath Temple 

    Why in the News?

    The Prime Minister of India highlighted the thousand year survival of the Somnath Temple, marking 1,000 years since the 1026 CE attack by Mahmud of Ghazni.

    Somnath Temple

    • One of the 12 sacred Jyotirlingas of Lord Shiva
    • Revered across Hindu tradition
    • Known as the Eternal Shrine due to repeated destruction and reconstruction

    Location

    • Prabhas Patan, near Veraval, Saurashtra region of Gujarat
    • Located on the Arabian Sea coast
    • At the Triveni Sangam of Kapila, Hiran, and Saraswati rivers

    Historical Significance

    Ancient Origins

    • Mentioned in Shiva Purana
    • Evidence of worship since antiquity
    • Multiple reconstructions in pre medieval times

    1026 CE Event

    • Temple attacked and plundered by Mahmud of Ghazni
    • Considered a major historical rupture in Indian history

    Medieval Period

    • Rebuilt by rulers such as Kumarapala of the Chaulukya dynasty
    • Reconstructed under Chudasama kings
    • Destroyed again during Sultanate invasions

    Symbol of Resilience

    • Historical records indicate the temple was destroyed six times
    • Rebuilt after every destruction
    • Became a symbol of civilisational continuity and faith

    Architectural Features

    • Built in Chaulukya or Solanki style
    • Prominent shikhara and richly carved stone walls
    • Garbhagriha houses the Jyotirlinga
    • Famous inscription stating no landmass lies between Somnath and the South Pole, symbolising cosmic alignment

    Modern Reconstruction

    Post Independence Revival

    • Reconstruction initiated in 1947
    • Led by Vallabhbhai Patel as a civilisational responsibility
    • Designed by architect Prabhashankar Sompura using traditional methods

    Inauguration

    • Inaugurated on 11 May 1951
    • By Rajendra Prasad
    • Despite the political debates of the period

    Present Management

    • Managed by the Somnath Trust
    • Trust is chaired by the Prime Minister of India
    [2022] The Prime Minister recently inaugurated the new Circuit House near Somnath Temple at Veraval. Which of the following statements are correct regarding Somnath Temple? 

    1. Somnath Temple is one of the Jyotirlinga shrines. 

    2. A description of Somnath Temple was given by Al-Biruni

    3. Pran Pratishtha of Somnath Temple (installation of the present-day temple) was done by President S. Radhakrishnan. 

    Select the correct answer using the code given below: 

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

  • India Inaugurates Global Standard Environmental and Solar Calibration Facilities  

    Why in the News?

    India has inaugurated the world’s second National Environmental Standard Laboratory and the world’s fifth National Primary Standard Facility for Solar Cell Calibration at CSIR National Physical Laboratory, New Delhi.

    National Environmental Standard Laboratory NESL

    • An apex national facility for testing, calibration and certification of air pollution monitoring instruments
    • Designed specifically for Indian climatic and environmental conditions

    Location

    • CSIR National Physical Laboratory, New Delhi

    Institutions Involved

    • Council of Scientific and Industrial Research
    • CSIR National Physical Laboratory

    Objectives

    • Establish India specific environmental measurement standards
    • Improve accuracy and reliability of air quality data
    • Support implementation of National Clean Air Programme

    Key Features

    • Calibration under Indian conditions such as temperature, humidity and dust load
    • Provides traceable and standardised pollution data
    • Supports regulators, startups, MSMEs and domestic manufacturers
    • Only UK and India currently have such national level facilities

    Significance

    • Strengthens pollution governance
    • Reduces dependence on foreign calibration labs
    • Improves credibility of air quality monitoring across India

    National Primary Standard Facility for Solar Cell Calibration

    • A high precision metrology facility for calibration of solar cells
    • Ensures globally comparable photovoltaic measurements

    Location

    • CSIR National Physical Laboratory, New Delhi

    Key Features

    • Uses Laser based Differential Spectral Responsivity system
    • Achieves world leading uncertainty of 0.35 percent (k=2)
    • Developed in collaboration with Physikalisch-Technische Bundesanstalt
    • Only the fifth such facility worldwide

    Importance

    • Supports solar manufacturing and R and D
    • Enhances trust in Indian photovoltaic performance data
    • Boosts renewable energy transition and exports

     Significance

    • Positions India as a global leader in environmental and energy metrology
    • Strengthens Make in India and Atmanirbhar Bharat
    • Supports climate action, clean energy goals and evidence based policymaking

    Prelims Pointers

    • NESL is linked to air pollution monitoring
    • Solar calibration facility ensures international PV measurement standards
    • CSIR NPL is India’s national metrology institute
    • Only five countries globally have national primary solar calibration facilities
    [2014] With reference to technology for solar power production, consider the following statements: 

    1. ‘Photovoltaics’ is a technology that generates electricity by direct conversion of light into electricity, while ‘Solar Thermal’ is a technology that utilizes the Sun’s rays to generate heat which is further used in electricity generation process. 

    2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC). 

    3. India has manufacturing base for Solar Thermal technology, but not for photovoltaics. 

    Which of the statements given above is/are correct? 

    (a) 1 only (b) 2 and 3 only (c) 1, 2 and 3 only (d) None of the above

  • Greenland Sovereignty and US Interest 

    Why in the News?

    Greenland, an autonomous territory of Denmark, has rejected renewed remarks by Donald Trump on taking over the island. Greenland’s Prime Minister Jens-Frederik Nielsen stated that citizens should not fear an imminent American annexation, while European powers reaffirmed support for Greenland’s sovereignty.

    Political Status of Greenland

    • World’s largest island
    • Population around 57,000
    • Autonomous territory within the Kingdom of Denmark
    • Controls internal affairs, while defence and foreign policy remain with Denmark
    • Not an independent NATO member, but covered under Denmark’s NATO membership

    Strategic Importance of Greenland

    • Located between Europe and North America
    • Critical for US ballistic missile defence systems
    • Part of the Arctic region, gaining importance due to climate change
    • Rich in critical minerals and rare earth elements
    • Important for reducing dependence on Chinese mineral supply chains

    International Law Angle

    • Territorial sovereignty is a core principle of international law
    • Annexation of another territory without consent violates UN principles
    • NATO is based on collective defence, not internal coercion

    Prelims Pointers

    • Greenland is not an independent country
    • Defence of Greenland is linked to Denmark’s NATO membership
    • Arctic geopolitics is driven by security, minerals, and climate change
    • Public opinion in Greenland strongly opposes US annexation
    [2014] Consider the following countries: 

    1. Denmark 

    2. Japan 

    3. Russian Federation 

    4. United Kingdom 

    5. United States of America 

    Which of the above are the members of the ‘Arctic Council’? 

    (a) 1, 2 and 3 only (b) 2, 3 and 4 only (c) 1, 4 and 5 only (d) 1, 3 and 5 only

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