💥UPSC 2026, 2027 UAP Mentorship November Batch

Innovations in Sciences, IT, Computers, Robotics and Nanotechnology

JNCASR develops Fast-Charging Sodium-Ion Battery

Why in the News?

Scientists at Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bengaluru have developed a super-fast charging Sodium-ion battery.

About Sodium-Ion Battery and Its Working:

  • What it is: Sodium-ion batteries are rechargeable batteries that use sodium (Na) ions to carry electric charge, instead of lithium.
  • How it works: During charging and discharging, sodium ions move between the anode (negative) and cathode (positive) — similar to how lithium-ion batteries function.
  • Innovation: A sodium-ion battery developed by JNCASR uses NASICON-type chemistry, a special material structure that ensures fast ion movement and stability.
  • Performance Boost: The team used nano-particles, added a carbon coating, and used aluminium doping to improve charging speed and battery life.
  • Fast Charging & Long Life: The battery can charge up to 80% in 6 minutes and last over 3,000 charge-discharge cycles.
  • Tested for Safety: The battery passed tests using electrochemical cycling and quantum simulations, proving it is safe and durable.

Advantages over Lithium-Ion Batteries:

  • Sodium is abundant and cheaper than lithium, and it can be extracted from seawater.
  • Sodium-ion batteries are safer, as they can be transported at zero voltage and used in high temperatures without risk of fire.
  • They are more eco-friendly, with less environmental damage during extraction compared to lithium.
  • Material costs are lower because they use aluminium instead of copper.
  • India can reduce its dependence on China, which controls much of the lithium battery supply chain.
  • These batteries are ideal for renewable energy applications, such as solar grids, electric vehicles, drones, and rural electrification in extreme climates.
[UPSC 2025] In the context of electric vehicles, consider the following elements:

I. Cobalt II. Graphite III. Lithium IV. Nickel

How many of the above usually make up battery cathodes?

(a) Only one (b) Only two (c) Only three * (d) All the four

 

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Industrial Sector Updates – Industrial Policy, Ease of Doing Business, etc.

Quality Council of India (QCI)

Why in the News?

The Minister of State for Commerce and Industry inaugurated the new unified headquarters of the Quality Council of India (QCI) at the World Trade Centre in New Delhi.

About Quality Council of India (QCI):

  • Establishment: QCI was set up in 1997 as an autonomous, non-profit body through a public-private partnership between the GoI and industry associations ASSOCHAM, CII, and FICCI.
  • Legal Status: It is registered under the Societies Registration Act, 1860.
  • Leadership: Ratan Tata was QCI’s first Chairman; the current chairman is appointed by Prime Minister.
  • Parent Department: QCI works under the Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry.
  • Role: Acts as India’s national accreditation body, offering independent assessments of products, services, and processes.
  • Mission: To improve quality standards in key areas like education, healthcare, environment, governance, and infrastructure.
  • Financial Model: It is a self-sustaining organisation, generating its own revenue without regular government funding.

Structure, Divisions, and Key Functions:

  • Governing Council: A 38-member council with equal representation from government, industry, and stakeholders oversees QCI.
  • Key Divisions: QCI operates through 5 major boards, each focusing on a different sector:
    1. National Accreditation Board for Testing and Calibration Laboratories
    2. National Accreditation Board for Hospitals and Healthcare Providers
    3. National Accreditation Board for Education and Training
    4. National Accreditation Board for Certification Bodies
    5. National Board for Quality Promotion
  • Core Activities:
    • Develops accreditation systems and quality frameworks.
    • Conducts third-party audits for schemes like Swachh Bharat Abhiyan and Pradhan Mantri Kaushal Vikas Yojana.
    • Runs the National Quality Campaign to build a culture of quality across sectors.
    • Helps boost India’s global competitiveness through quality certification and awareness initiatives.
[UPSC 2017] With reference to Quality Council of India (QCI), consider the following statements:

1. QCI was set up jointly by the Government of India and the Indian Industry.

2. Chairman of QCI is appointed by the Prime Minister on the recommendations of the industry to the Government.

Which of the above statements is/are correct?

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

 

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Indian Army Updates

17th Edition of Exercise Nomadic Elephant

Why in the News?

The 17th edition of the India–Mongolia Joint Military Exercise NOMADIC ELEPHANT is being held in Ulaanbaatar, Mongolia from May 31 to June 13, 2025.

About Exercise NOMADIC ELEPHANT:

  • About: It is a bilateral military exercise between the Indian Army and the Mongolian Armed Forces.
  • Launch Year: It was first conducted in 2004 in Mongolia, followed by the second edition in 2005 in Vairengte, Mizoram.
  • Frequency and Hosting: The exercise is held annually, with India and Mongolia alternating as hosts.
  • Recent Editions: The 15th edition was conducted in Ulaanbaatar in July 2023, and the 16th edition was held at Umroi, Meghalaya in July 2024.

Objectives and Focus:

  • Interoperability: The main goal is to improve joint operational coordination between the two-armed forces.
  • Terrain Focus: It trains troops for task force operations in semi-urban and mountainous regions under a UN peacekeeping mandate.
  • Counter-Terrorism Training: The exercise enhances capabilities in counter-terrorism and counter-insurgency operations.
  • Regional Cooperation: It helps build mutual trust, encourages regional peace, and supports strategic cooperation.
[UPSC 2008] ‘Hand-in-Hand 2007’, a joint anti-terrorism military training was held by the officers of the Indian Army and officers of the Army of which one of the following countries?

Options: (a) China (b) Japan (c) Russia (d) USA*

 

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Economic Indicators and Various Reports On It- GDP, FD, EODB, WIR etc

Govt. releases Provisional GDP Estimates

Why in the News?

The Ministry of Statistics and Programme Implementation (MoSPI) released two important data sets on May 30, 2025 — one for India’s GDP growth in Q4 (January–March) FY25, and another for the provisional estimates for the entire FY25 (2024–25).

How is Economic Growth measured?

  • Gross Domestic Product (GDP) measures economic growth by adding all expenditures in the economy — including private, government, and business spending. It shows demand-side performance.
  • Gross Value Added (GVA) measures the supply-side. It calculates how much value is added by each sector of the economy.
  • GDP and GVA are related:
    GDP = GVA + (Taxes) – (Subsidies)
  • MoSPI reports both in:
    • Nominal terms: Includes current prices.
    • Real terms: Adjusted for inflation to reflect true growth.

Why are these Estimates called “Provisional”?

  • GDP estimates are revised in stages:
    • January: First Advance Estimates (FAE)
    • February: Second Advance Estimates (SAE)
    • May: Provisional Estimates (PE)
  • Final figures come later:
    • First Revised Estimate: After 1 year
    • Final Estimate: After 2 years
  • FY25’s final numbers will come in 2026 and 2027.

Key Takeaways from FY25 Data

  • India’s Economy Size:
    • India’s economy is now worth ₹330.7 lakh crore or $3.87 trillion.
    • GDP grew by 9.8%, which is slower than in previous years.
  • Real GDP Growth:
    • After removing inflation, real GDP grew by 6.5%.
    • This is slower than the 9.2% growth seen last year (as mentioned in the Provisional Estimates). (Disputed: India’s real GDP growth rate was 8.2% in FY 2023-24 as per Economic Survey.)
  • Sector Performance:
    • Agriculture grew well at 4.6%.
    • Manufacturing grew only 4.5%, which is a concern.
    • Construction was strong with 9.4% growth.
    • Services grew by 7.2%.
  • Manufacturing Worry:
    • Manufacturing is growing slower than agriculture.
    • This is affecting urban jobs, especially for youth.
  • Best Growth in Jan–Mar 2025 (Q4):
    • GDP growth was 7.4% in Q4 — the highest for the year.
    • Construction grew fastest at 10.8%.
    • Agriculture and Services also did well.
  • Spending Trends:
    • People spent more — household spending rose 7.2%.
    • Investment in assets grew 7.1%, slower than last year.

 

[UPSC 2015] With reference to Indian economy, consider the following statements:

(1) The rate of growth of Real Gross Domestic product has steadily increased in the last decade. (2) The Gross Domestic product at market prices (in rupees) has steadily increased in the last decade.

Which of the statements given above is/are correct?

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

 

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Primary and Secondary Education – RTE, Education Policy, SEQI, RMSA, Committee Reports, etc.

[30th May 2025] The Hindu Op-ed: Rewriting the script of Early Childhood Education

PYQ Relevance:

[UPSC 2020] National Education Policy 2020 is in conformity with the Sustainable Development Goal-4 (2030). It intends to restructure and reorient education system in India. Critically examine the statement.

Linkage: A key focus of the NEP 2020 is the strengthening and formalization of Early Childhood Care and Education (ECCE), recognizing its foundational importance. Therefore, critically examining the NEP 2020 directly relates to the concept of “rewriting the script” for education, including ECE.

 

Mentor’s Comment:  Lack of proper early childhood care and education (ECE) increases inequality, affecting children’s brain development, learning ability, and future income. Nobel Prize winner James Heckman’s research shows that investing in young children gives the best returns. This highlights the need for urgent systemic changes. Some states like Uttar Pradesh, Odisha, and Madhya Pradesh are already making progress with innovative ECE programmes. These small but focused steps in early childhood can help break the cycle of poverty and help India fully benefit from its young population by 2047.

Today’s editorial will talk about the early childhood care and education (ECE) . This content would help in GS Paper II ( Policy Making & Education).

_

Let’s learn!

Why in the News?

India’s silent but urgent employment crisis is rooted not just in the lack of jobs, but in the lottery of birth that disadvantages millions of children from the outset. So, smart spending on early childhood education and involving parents will support young children in learning better.

What is the lottery of birth? 

  • The “lottery of birth” refers to the idea that a child’s future is largely shaped by the circumstances into which they are born, such as: Family income, Geographic location, Caste, gender, or religion, Access to health, nutrition, and education.
  • These are factors beyond the child’s control but can determine their opportunities, development, and life outcomes.

What is the significance of the “lottery of birth” in shaping a child’s future in India? 

  • Determines Access to Basic Needs Early On: A child born into poverty often lacks access to adequate nutrition, healthcare, and early learning, which are essential for cognitive and physical development. Eg: A child born in a rural poor household may suffer from malnutrition and poor school readiness, limiting long-term potential.
  • Creates Early Learning and Earning Gaps: By age 5, differences in language, numeracy, and motivation are already visible, making it harder for disadvantaged children to catch up in school and later in life. Eg: Only 15% of pre-primary children could match basic objects, and 30% could identify larger and smaller numbers, indicating early learning gaps.
  • Perpetuates Intergenerational Poverty: Children born into poverty often remain trapped in low-opportunity environments, repeating the cycle into adulthood due to limited human capital development. Eg: Without quality early education, a poor child is far less likely to complete schooling or access skilled employment, thus continuing the poverty cycle.

Why is early childhood care and education (ECE) considered a high-return investment?

  • Highest Returns on Human Capital Investments: The Heckman Curve shows that investments in ECE yield the greatest returns compared to later stages of education or training. Eg: For every $1 spent on ECE, the return ranges between $7 to $12, through better education, health, and reduced crime.
  • Long-Term Economic and Social Benefits: Quality ECE leads to higher lifetime earnings, better employment, and improved life outcomes, helping individuals and economies thrive. Eg: Children with access to quality ECE are 4 times more likely to earn higher incomes and 3 times more likely to own a home as adults.
  • Bridges Early Learning Gaps and Boosts School Readiness: ECE helps close learning gaps caused by poverty, ensuring children enter school prepared, reducing dropouts and remedial education costs. Eg: States like Odisha are launching Shishu Vatikas to prepare 5–6-year-olds for formal schooling, improving readiness and future learning outcomes.

Who are the key stakeholders responsible for improving ECE outcomes in India?

  • Anganwadi workers and government pre-primary school teachers are frontline educators.
  • State governments are responsible for hiring dedicated ECE teachers and creating infrastructure.
  • Parents and caregivers play a crucial role in reinforcing learning at home.
  • Supervisors and training institutions ensure quality and pedagogy through monitoring and capacity building.
  • The Government of India provides funding and policy direction, though current spending is limited (₹1,263 per child annually).

Where are Indian states like Uttar Pradesh and Odisha making notable ECE interventions?

  • Uttar Pradesh: Hiring of ECE Educators and Teacher Training: Uttar Pradesh is recruiting nearly 11,000 Early Childhood Care and Education (ECE) educators for Balavatikas across districts. The state also held a six-day residential training for 50 master trainers from 13 districts to improve ECE pedagogy. Eg: These trained master trainers will cascade the training to other educators, ensuring quality instruction in early years.
  • Odisha: Launch of Shishu Vatikas and Jaduipedi Kits: Odisha is setting up Shishu Vatikas in all government schools to prepare children aged 5–6 for formal schooling. The state also introduced Jaduipedi Kitsplay-based learning materials to enhance school readiness. Eg: These initiatives are aligned with NEP 2020 and help improve early learning outcomes through structured activities.

How can parental involvement improve the effectiveness of early learning initiatives?

  • Strengthens Learning Continuity at Home: When parents engage in their child’s early education, it reinforces what is taught at ECE centres, ensuring consistent learning both at home and school. Eg: Providing simple worksheets or storybooks for home use helps children practice and retain concepts better.
  • Improves Child Motivation and Confidence: Active parental involvement boosts a child’s sense of security, motivation, and self-esteem, making them more eager to learn. Eg: In Madhya Pradesh, programmes like Bal Choupal involve parents in play-based activities, which positively impact children’s classroom participation.
  • Bridges Knowledge Gaps through Technology: Digital tools like WhatsApp groups or EdTech apps help parents access learning tips, track progress, and support their child’s development, especially where formal education resources are limited. Eg: Parents receiving weekly learning activities via smartphones are better equipped to support foundational skills like language and numeracy.

What are the steps taken by the Indian government?

  • Integration of ECE in National Education Policy (NEP) 2020: The NEP 2020 recognizes early childhood education as a critical foundation and proposes a new 5+3+3+4 curriculum structure, where the first five years focus on foundational learning (ages 3–8). Eg: Introduction of the “Foundational Literacy and Numeracy” mission (NIPUN Bharat) to ensure basic learning outcomes by Grade 3.
  • Expansion and Strengthening of Anganwadi Centres: The government has focused on upgrading 14 lakh Anganwadi centres across India to serve as key delivery points for ECE, nutrition, and health services. Eg: POSHAN Abhiyaan supports capacity-building of Anganwadi workers and provides teaching-learning material to improve preschool education quality.

Way forward: 

  • ​​Increase Investment and Improve Infrastructure in ECE: The government should significantly raise funding per child for early childhood education to ensure adequate instructional time, trained teachers, and quality learning materials. Strengthening infrastructure, including more Anganwadi centres and pre-primary schools with dedicated educators, will help bridge existing gaps and improve learning outcomes.
  • Enhance Parental Engagement and Community Participation: Empower parents with awareness, guidance, and digital tools to participate in their children’s early learning. Community-based programs like Bal Choupal should be expanded nationwide, and EdTech solutions leveraged to provide continuous support, creating a strong home-school learning ecosystem.

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New Species of Plants and Animals Discovered

Pedicularis rajeshiana: New plant species from Himalayas

rajesh

Why in the News?

A new plant species named Pedicularis rajeshiana has been discovered in the western Himalayas of India.

About Pedicularis rajeshiana:

  • Discovery: It is a newly discovered plant species found at Rohtang Pass, Himachal Pradesh, at an altitude of 4,390 metres.
  • Research Publication: The discovery was made by a scientist from the Botanical Survey of India (BSI), Dehradun, and published in the journal Phytotaxa.
  • Plant Family: It belongs to the Orobanchaceae family and is part of the Lousewort group of plants.
  • Plant Type: It is a hemiparasitic plant, meaning it draws some nutrients from nearby plants but also performs photosynthesis.
  • Habitat: Grows on shaded, rocky mountain slopes, making it rare and possibly endangered due to its specific environment.
  • Diversity: With this addition, India now has 83 Pedicularis species, including 36 in the western Himalayas.

Key Features of the Plant:

  • Unique Floral Structure:
    • Flowers have a deeply cut lower lip and stamens at three different levels — a very rare combination.
    • Some flowers show a twin galea (double hood), never observed before in this genus, possibly an evolutionary trait to enhance pollination.
  • Microscopic Details: Pollen grains have a croton-like texture and a distinct shape, confirmed through microscope studies.
  • Distinctiveness: Compared to related species like P. porrecta and P. heydei, this plant is smaller, with fewer flowers and leaflets.
[UPSC 2018] Why is a plant called Prosopis juliflora often mentioned in news?

Options: (a) Its extract is widely used in cosmetics. (b) It tends to reduce the biodiversity in the area in which it grows. * (c) Its extract is used in the synthesis of pesticides. (d) (None of the above.

 

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Capital Markets: Challenges and Developments

Initial Public Offering (IPO)

Why in the News?

OpenAI has announced its readiness for a future Initial Public Offering (IPO).

Laws Governing IPOs in India:

  • SEBI Act, 1992: Empowers SEBI to regulate capital markets and IPO processes.
  • Companies Act, 2013: Governs company formation, prospectus rules, and disclosure norms.
  • SEBI (ICDR) Regulations, 2018: Specifies detailed rules on IPO eligibility, pricing, disclosure, and allotment.
  • Securities Contracts (Regulation) Act, 1956:  Regulates the listing and trading of securities on stock exchanges.
  • SEBI (LODR) Regulations, 2015: Mandates continuous disclosure requirements and corporate governance standards for listed companies.

What is an IPO?

  • Definition: An IPO is when a private company offers its shares to the public for the first time.
  • Objective: It marks the company’s move to become a publicly listed company on a stock exchange.
  • End Goal: Through an IPO, companies raise money from investors, and the public gets a chance to become shareholders.

How is an IPO Listed in India?

  • Regulatory Filing: A company must file an offer document with SEBI (Securities and Exchange Board of India).
  • Offer Document Includes:
    • Details of the company and promoters.
    • Financial history and business goals.
    • The reason for raising capital and IPO structure.
  • SEBI Approval: After review, SEBI gives permission for the listing process to begin.

IPO Eligibility & Pricing:

  • Eligibility Criteria (SEBI Rules):
    • Minimum Rs 3 crore in tangible assets in the last 3 years.
    • Minimum Rs 1 crore in net worth each year for 3 years.
    • Rs 15 crore average pre-tax profit in at least 3 out of the last 5 years.
  • Who sets the Price:
    • The company and its merchant banker decide the price based on valuation.
    • Factors include assets, profits, and future growth.
    • SEBI does NOT fix IPO prices.

Who can invest in an IPO?

  • Eligibility: Anyone 18 years or older with a brokerage account can apply.
  • Investor Categories:
    1. Qualified Institutional Buyers (QIBs): Mutual funds, banks, insurance firms, FPIs, etc.
    2. Retail Investors: Individuals investing up to Rs 2 lakh.
    3. High Net Worth Individuals (HNIs): Investing more than Rs 2 lakh.
[UPSC 2025] Consider the following statements:

I. India accounts for a very large portion of all equity option contracts traded globally, thus exhibiting a great boom.

II. India’s stock market has grown rapidly in the recent past, even overtaking Hong Kong’s at some point in time.

III. There is no regulatory body either to warn small investors about the risks of options trading or to act on unregistered financial advisors in this regard.

Which of the statements given above are correct?

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

 

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Modern Indian History-Events and Personalities

Birth Anniversary of Veer Savarkar

Why in the News?

The Prime Minister paid tributes to Veer Savarkar on his birth anniversary on May 28th.

About Veer Savarkar: Life, Contributions, and Legacy

Details
Who was Veer Savarkar? Born on May 28, 1883, in Bhagur, Maharashtra,
• Founded the Abhinav Bharat Society (1904) with his brother Ganesh Damodar Savarkar for armed resistance.
• Led India House in London (1906) and the Free India Society.
• Arrested in 1910, sentenced to life imprisonment in Cellular Jail (Kala Pani, Andaman & Nicobar Islands).
• Became President of the Hindu Mahasabha (1937-1943).
• Died on February 26, 1966, after fasting till death.
His Contributions • Advocated armed revolution against British rule.
• Coined Hindutva (1923), defining Indian identity beyond religion.
Opposed Partition, emphasizing Hindu political unity.
• Championed military nationalism over passive resistance.
• Writings and ideology influenced Indian nationalist movements.
Literary Works The First War of Indian Independence (1909):  Reinterpreted the 1857 Revolt as a nationalist struggle.
Hindutva: Who is a Hindu? (1923): Laid the ideological foundation of Hindutva.
My Transportation for Life (1950): Memoirs of his imprisonment in Cellular Jail.
Six Glorious Epochs of Indian History: Advocated Hindu resistance against foreign invaders.
Controversies Gandhi Assassination Case (1948): Arrested but acquitted due to lack of evidence.
Mercy Petitions (1911-1924): Wrote clemency petitions for early release from prison, debated as tactical or compromising.
Opposition to Quit India Movement (1942): Rejected Gandhi’s call, favoured military strength over civil disobedience.
Hindutva Ideology: Critics claim it fostered religious divisions, while supporters see it as reviving Hindu identity.

 

[UPSC 2008] During the Indian Freedom Struggle, who of the following raised an army called ‘Free Indian Legion’?

Options: (a) Lala Hardayal (b) Rashbehari Bose (c) Subhas Chandra Bose * (d) V.D. Savarkar

 

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Wildlife Conservation Efforts

Culling of Vermins

Why in the News?

The Kerala Cabinet is exploring the legal possibility of introducing a bill to permit scientific and regulated culling of wild animals, particularly feral boars.

What are Vermins?

  • Definition: Vermins are animals considered harmful or nuisance-causing because they damage crops, threaten livestock, or pose risks to human life and property.
  • Examples: Common vermins include rats, mice, common crows, and fruit bats.
  • Legal Effect: When an animal is classified as vermin, it loses legal protection and becomes exempt from conservation safeguards.

Provisions Related to Vermin in Wildlife Protection Act (WPA), 1972:

  • Schedule V: Lists animals classified as vermin, which can be hunted freely.
  • Section 62: Allows the central government to declare any wild animal (except those in Schedule I and Part II of Schedule II) as vermin for a specified area and time period.
  • Protection Status: Once declared vermin, the animal is treated as a Schedule V species, losing protection.
  • Exclusions: Animals in Schedules I and II (e.g., tigers, elephants) enjoy the highest protection and cannot be declared vermin.
  • Section 11: Chief Wildlife Wardens can allow trapping, capture, or killing of animals like wild boars in cases of public safety or property damage.
  • Wildlife Protection (Amendment) Act, 2022:
    • Reduction of Schedules: From six to four, with Schedule V has been removed.
    • Direct Declaration Power: It allows the Centre to directly declare any species (except those in Schedule I) as vermin, enabling broader culling without the older categorisation system.

How are Vermins Declared?

  • State Initiation: The state sends a formal request to the Ministry of Environment, Forest and Climate Change (MoEFCC).
  • Declaration: If justified, the Centre issues a notification, declaring the species vermin for a specific region and time frame.
  • Temporary Status: This declaration is not permanent and applies only to the area and time mentioned.
  • Examples:
    • Wild boar in Uttarakhand
    • Nilgai (blue bull) in Bihar
    • Rhesus monkeys in Himachal Pradesh
[UPSC 2024] Consider the following statements:

Statement-I: The Indian Flying Fox is placed under the “vermin” category in the Wild Life (Protection) Act, 1972.

Statement-II: The Indian Flying Fox feeds on the blood of other animals. Which one of the following is correct in respect of the above statements?

Options: (a) Both statement I and Statement II are correct and statement II explains statement I (b) Both Statement-I and Statement-II are correct, but Statement-II does not explain 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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Defence Sector – DPP, Missions, Schemes, Security Forces, etc.

AMCA Project

Why in the News?

The defence minister has cleared the execution model for the Advanced Medium Combat Aircraft (AMCA) project, where Hindustan Aeronautics Limited (HAL) must now compete with private companies for the production contract under a new industry partnership model.

amca

About the AMCA Project:

  • Overview: The Advanced Medium Combat Aircraft (AMCA) is India’s fifth-generation stealth fighter being developed by ADA under DRDO.
  • Approval: The project received Cabinet Committee on Security (CCS) approval in March 2024, with a budget of ₹15,000 crore.
  • Timeline: The first prototype is expected by 2028–29, production by 2032–33, and induction by 2034.
  • Key Features:
    • Stealth design, internal weapons bay, and diverterless supersonic intake.
    • Payload: 1,500 kg internal and 5,500 kg external.
    • Fuel: Internal capacity of 6,500 kg.
  • Development Phases:
    1. AMCA Mk1 will use the GE F-414 engine.
    2. AMCA Mk2 will have a co-developed engine with France’s Safran.
  • Strategic Importance: AMCA will help India counter threats from regional powers like China, which already deploy J-20 and J-35 fighters.

What are 5th Generation Fighter Aircrafts?

  • Definition: Fifth-generation fighters are the most advanced combat aircraft in service today.
  • Examples: Include the F-22 and F-35 (USA), Su-57 (Russia), and J-20 (China).
  • Core Features:
    • Stealth technology to avoid radar detection.
    • Beyond-visual-range (BVR) combat capabilities.
    • AI-based systems and automated battle management.
  • Roles: These jets can perform air combat, surveillance, and ground attacks with precision and multi-role capability.

What does “Generation” mean in Fighter Aircrafts?

  • Classification: Fighter jets are grouped by technological advances that can’t be added through upgrades.
  • Evolution:
    • 1st–3rd Gen: Basic jets with limited speed and weaponry.
    • 4th Gen: Improved radar, manoeuvrability, and precision weapons (e.g., Rafale, Su-30MKI).
    • 5th Gen: Introduces stealth, super-cruise, sensor fusion, and electronic warfare.
  • Comparative Use: While not a perfect measure, “generation” helps compare air force capabilities across countries.

 

[UPSC 2025] With reference to India’s defence, consider the following pairs:

Aircraft type: Description

I. Dornier-228: Maritime patrol aircraft

II. IL-76: Supersonic combat aircraft

III. C-17 Globemaster III: Military transport aircraft

How many of the pairs given above are correctly matched?

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

 

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Places in news: Mt. Khangchendzonga

Why in the News?

Sikkim’s CM has asked the Centre to ban climbing on Mt. Khangchendzonga, even from the Nepal side, as the mountain is sacred to the Sikkimese and seen as a guardian deity.

About Mt. Khangchendzonga:

  • Location: Mt. Khangchendzonga is the third-highest mountain in the world at 8,586 metres, located on the India-Nepal border in the eastern Himalayas.
  • Major Glaciers and Rivers: It is surrounded by Zemu, Talung, Yalung, and Kanchenjunga glaciers and bordered by rivers like Tamur, Lhonak, and Teesta.
  • Etymology: Known as the “Five Treasuries of the Great Snow”, due to its five towering peaks, all above 8,000 metres.
  • Geological Age: The mountain rocks are between 445 million to 1 billion years old, from the Neoproterozoic to Ordovician periods.
  • Ecological Zone: Located within Khangchendzonga National Park, a UNESCO World Heritage Site, rich in altitude diversity and rare species.
  • Wildlife and Ecosystems: Home to snow leopards, red pandas, musk deer, and Asiatic black bears, along with over 220 glacial-fed water bodies.
  • Hydrological Importance: It is the highest point in the Brahmaputra basin, contributing water to both the Ganges and Kosi River systems.
  • Climate: Receives heavy monsoon snowfall and lighter winter snow.

Religious and Cultural Significance:

  • Spiritual Status: The mountain is sacred in Sikkim and Nepal, embedded in local mythology and Buddhist traditions.
  • Symbolism of the Name: The “5 Treasuries” are believed to hold salt, gold, turquoise, sacred texts, grain, medicine, and other treasures.
  • Guardian Deity: It is considered the home of Dzoe-Nga, the chief protector deity of Sikkim, known as Pho-lha.
  • Mythological Roots: Local guardian deities were blessed by Guru Padmasambhava, the patron saint of Sikkim.
  • Climbing Ban: The Sikkim government banned climbing on the mountain in 1998 and 2001 under the Sacred Places of Worship Act, 1991, to preserve its sanctity.
[UPSC 2024] Consider the following pairs:

Peak: Mountains

1. Namcha Barwa — Garhwal Himalaya

2. Nanda Devi — Kumaon Himalaya

3. Nokrek — Sikkim Himalaya

Which of the pairs given above is/are correctly matched?

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

 

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Innovations in Biotechnology and Medical Sciences

TR1 Cells: The Hidden Warriors in Malaria Immunity

Why in the News?

Scientists at Stanford University discovered that TR1 cells play a dominant role in fighting malaria reinfections.

Understanding the Body’s Immune Response:

  • What is the Immune System? It’s the body’s defence system that protects us from infections like malaria.
  • First Defence: The skin and body surfaces block germs from entering.
  • Innate Immunity: If germs get in, the innate immune system reacts fast, like an emergency response team.
  • Adaptive Immunity: Then, the adaptive immune system kicks in, targeting germs specifically and remembering them for future protection.
  • B-Cells and T-Cells:
    • B-cells make antibodies to fight germs.
    • T-cells attack infected cells and guide other immune cells.
  • Helper T-Cells: A type called CD4+ T-cells helps organise the defence. Earlier, scientists thought TH1 cells were key in malaria, but a new study shows TR1 cells are more important, especially in repeat infections.

What are TR1 Cells?

  • Role of TR1 Cells: These are special T-cells that help control the immune system and prevent overreaction.
  • Major Response in Malaria: Though small in number, during malaria, TR1 cells become the main helper cells.
  • Study in Uganda: In young children with repeated malaria, TR1 cells grew in number and improved the body’s ability to fight malaria without severe illness.
  • Memory and Immunity: TR1 cells remember the malaria parasite and return stronger with each infection.
  • Types of TR1 Cells:
    • Naïve TR1 – not yet active.
    • Effector TR1 – fighting infection.
    • Memory TR1 – remembering past infections.
  • Epigenetic Role: TR1 cells may respond by switching genes on or off, not by changing the genes themselves.

Key Findings of the Study:

  • Research Team: Scientists from Stanford University studied people in Uganda over many months and years.
  • Tracking Infections: They followed individuals through multiple malaria infections to see how immune cells behaved.
  • Gene Scanning: A special technique was used to read the genes of each immune cell — like scanning a barcode.
  • Findings: TR1 cells were accurate, long-lasting, and clearly connected to malaria (not other infections).
  • Why it matters: This discovery can help in making better malaria vaccines, boosting long-term protection, and even improving treatments for other serious diseases.
[UPSC 2025] With reference to monoclonal antibodies, consider the following:

I. They are man-made proteins. II. They stimulate the patient’s immune system to fight the specific disease. III. They are produced using animal cells only.

Which of the statements given above are correct?

Options: (a) I and II only (b) II and III only (c) I and III only (d) All the three *

 

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Minimum Support Prices for Agricultural Produce

Cabinet approves hike in MSP for Kharif Crops

Why in the News?

The Cabinet Committee on Economic Affairs chaired by Prime Minister has approved the increase in the Minimum Support Price (MSP) for 14 kharif crops for 2025-26.

What is the Minimum Support Price (MSP)?

  • MSP in India originated in response to food shortages in the 1960s, notably during the Bihar famine of 1966–1967.
  • Agricultural Price Commission (APC) was established in 1965 to implement price policies like procurement at pre-decided prices and MSP.
  • Over time, the APC evolved into the Commission for Agricultural Costs and Prices (CACP) in 1985, with broader terms of reference.
  • Announcement: The government bases its announcement on the recommendations given by the Commission for Agricultural Costs & Prices (CACP).

Steps involved in Fixing MSPs:

  • CACP sends its recommendations to the Government of India.
  • The reports are shared with state governments and concerned central ministries for comments.
  • After reviewing all inputs, the Cabinet Committee on Economic Affairs (CCEA) takes the final decision on MSPs.
  • Once approved, CACP publishes all its reports online, ensuring transparency and explaining the rationale behind its recommendations.

How is MSP fixed?

  • Formulae for Calculation:
    • A2: Costs incurred by the farmer in production of a particular crop. It includes several inputs such as expenditure on seeds, fertilisers, pesticides, leased-in land, hired labour, machinery and fuel
    • A2+FL: Costs incurred by the farmer and the value of family labour
    • C2: A comprehensive cost, which is A2+FL cost plus imputed rental value of owned land plus interest on fixed capital, rent paid for leased-in land
  • National Commission of Farmers also known as the Swaminathan Commission (2004) recommended that the MSP should at least be 50 per cent more than the weighted average Cost of Production (CoP), which it refers to as the C2 cost.
  • The government maintains that the MSP was fixed at a level of at least 1.5 times of the all-India weighted average CoP, but it calculates this cost as 1.5 times of A2+FL.
  • Crops covered are: CACP currently recommends MSPs for 23 key crops:
    • 7 Cereals: Paddy, Wheat, Maize, Sorghum (Jowar), Pearl Millet (Bajra), Barley, and Ragi
    • 5 Pulses: Gram (Chana), Tur (Arhar), Moong, Urad, and Lentil (Masur)
    • 7 Oilseeds: Groundnut, Rapeseed-Mustard, Soybean, Sesame, Sunflower, Safflower, and Nigerseed
    • 4 Commercial Crops: Copra, Cotton, Raw Jute and Sugarcane (Fair and Remunerative Price (FRP) is announced by CACP.)
[UPSC 2020] Consider the following statements:

1. In the case of all cereals, pulses and oil-seeds, the procurement at Minimum Support Price (MSP) is unlimited in any State/UT of India.

2. In the case of cereals and pulses, the MSP is fixed in any State/UT at a level to which the market price will never rise.

Which of the statements given above is/are correct?

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

 

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Judicial Appointments Conundrum Post-NJAC Verdict

Supreme Court Collegium recommends transfer of HC CJs

Why in the News?

The Supreme Court Collegium has recommended the transfer of 4 Chief Justices from the High Courts of Madras, Rajasthan, Tripura, and Jharkhand.

About the Collegium System:

  • Definition: It is used in India for the appointment and transfer of judges to the Supreme Court and High Courts.
  • Non-Constitutional Origin: It is not mentioned in the Constitution or any law passed by Parliament. It developed through Supreme Court judgments to protect judicial independence.
  • Judicial Primacy: The system ensures that senior judges, not the government, have the main say in judicial appointments.
  • Evolution: It arose in response to executive interference during the 1970s, when the government tried to influence and supersede senior judges:
  • First Judges Case (1981)S.P. Gupta v. Union of India:
    • Held that the Chief Justice’s opinion was only consultative.
    • Gave the executive primary control over appointments and transfers.
  • Second Judges Case (1993)Advocates-on-Record Association v. Union of India:
    • Overruled the First Judges Case.
    • Declared that “consultation” with the CJI means “concurrence”, making the CJI’s view binding.
    • Introduced the Collegium system, involving the CJI and two senior-most judges.
    • Affirmed that judicial independence requires judicial primacy in appointments.
  • Third Judges Case (1998)Re: Presidential Reference:
    • Expanded the Collegium to include the CJI and four senior-most Supreme Court judges.
    • Emphasised institutional decision-making, not personal preferences of individual judges.

How does the Collegium System works?

  • For Supreme Court Judges:
    • The Collegium includes the CJI and four senior-most SC judges.
    • It recommends names for appointments to the SC and appointments/transfers of High Court judges and Chief Justices.
    • The Law Ministry processes these names and sends them to the Prime Minister, who advises the President for final approval.
  • For Appointing the Chief Justice of India:
    • The sitting CJI recommends the senior-most SC judge.
    • This practice has been followed since the 1970s supersession controversy.
  • For High Court Judges:
    • Recommendations start from the Chief Justice of the High Court, who consults two senior colleagues.
    • The proposal goes to the state government, then to the Supreme Court Collegium (CJI and two senior-most SC judges), and finally to the President.
  • For Transfers of Judges:
    • Article 222 of the Constitution allows transfer of High Court judges.
    • The Collegium recommends transfers, often for administrative needs or public interest.
    • Consent is not needed, but the CJI must consult the Chief Justice of the concerned High Court and other senior judges.
    • No High Court can have an Acting Chief Justice for more than a month, so transfers and new appointments are usually done together.

Tap to know more about the Appointment and Removal of HC Judges.

[UPSC 2012] What is the provision to safeguard the autonomy of the Supreme Court of India?

1. While appointing the Supreme Court Judges, the President of India has to consult the Chief Justice of India. 2. The Supreme Court Judges can be removed by the Chief Justice of India only. 3. The salaries of the Judges are charged on the Consolidated Fund of India to which the legislature does not have to vote. 4. All appointments of officers and staff of the Supreme Court of India are made by the Government only after consulting the Chief Justice of India. Which of the statements given above is/are correct?

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

 

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Monsoon Updates

Bow Echo Storms

Why in the News?

New Delhi recently faced a severe thunderstorm with winds up to 100 kmph, forming a bow echo — a crescent-shaped pattern seen on weather radar.

About Bow Echo:

  • What is it: A bow echo is a storm pattern on radar that looks like a curved bow, similar to an archer’s bow.
  • Storm Type: It forms inside a mesoscale convective system (MCS) — a large group of organised thunderstorms.
  • Origin of Term: The term was first used by Ted Fujita, who also created the Fujita scale for tornadoes.
  • How It Forms:
    • Heavy rain causes cool air to sink and spread out near the ground.
    • This cool air forms a gust front, which pushes warm, moist air upward, creating new storms.
    • A rear inflow jet — strong mid-level winds — pushes the storm forward, bending it into a bow shape.
    • Bookend vortices may form at both ends of the bow, and the northern end can sometimes generate tornadoes.

Size, Impact, and Dangers:

  • Size and Duration: Bow echoes usually span 20 to 200 km and last 3 to 6 hours.
  • Wind Strength: They often produce straight-line winds over 100 km/h, like those seen in Delhi’s recent storm.
  • Derechos: In severe cases, bow echoes can grow into derechos, which are long-lasting and widespread windstorms.
  • Impacts:
    • Damaging Winds: Knock down trees, power lines, and damage buildings.
    • Brief Tornadoes: May form at the storm’s edges, especially at the northern end.
    • Microbursts and Downbursts: Intense short-lived wind blasts within the storm that cause local destruction.
[UPSC 2013] During a thunderstorm, the thunder in the skies is produced by the-

1. Meeting of cumulonimbus clouds in the sky 2. Lightning that separates the nimbus clouds 3. Violent upward movement of air and water particles.

Select the correct answer using the codes given below.

Options: (a) 1 only (b) 2 and 3 (c) 1 and 3 (d) None of the above produces the thunder*

 

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Monsoon Updates

What is Madden-Julian Oscillation (MJO)?

Why in the News?

Mumbai got heavy monsoon rains two weeks early because of a strong Madden-Julian Oscillation (MJO) — a weather pattern that boosts rainfall in the region.

About the Madden-Julian Oscillation (MJO):

  • Definition: The MJO is a moving weather system of clouds, wind, rain, and pressure that travels eastward around the tropics.
  • Cycle Time: It takes 30 to 60 days to complete a full loop around the globe.
  • Discovery: It was discovered in the 1970s by Roland Madden and Paul Julian.
  • Two Phases:
    1. The enhanced convective phase brings heavy rain, storms, and clouds.
    2. The suppressed convective phase brings dry, clear weather.
  • Global Pattern: These phases move together — when one area gets rain, another gets dry weather.
  • MJO vs ENSO: Unlike El Niño, which lasts for months, the MJO changes every few weeks and affects short-term weather patterns.
  • Wider Impact: It influences monsoons, cyclones, jet streams, and weather in both tropical and non-tropical regions.
  • Phases: Scientists divide its movement into 8 phases, each showing where rain or dry weather will occur.

MJO and the Early Monsoon of 2025:

  • Early Monsoon Trigger: The early arrival of the monsoon in May 2025 was largely due to a very active MJO.
  • IMD Observation: The India Meteorological Department noted that the MJO was in Phase 4 with high amplitude, which strongly affects Indian rainfall.
  • Rapid Monsoon Progress: It helped push extra moisture and clouds from the Indian Ocean, making the monsoon move from Kerala to Maharashtra in just two days.
  • Other Contributing Factors:
    • A strong cross-equatorial flow brought warm, moist air from the south.
    • A low-pressure system in the Arabian Sea brought pre-monsoon rains to Mumbai.
  • Record Rainfall: This resulted in Mumbai’s wettest May in over 100 years.
  • Why It Matters: The event showed how a tropical system like the MJO can suddenly change monsoon timing and rainfall patterns in India.
[UPSC 2017] With reference to ‘Indian Ocean Dipole (IOD)’ sometimes mentioned in the news while forecasting Indian monsoon, which of the following statements is/are correct?

1. IOD phenomenon is characterized by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean.

2. An IOD phenomenon can influence an El Nino’s impact on the monsoon.

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

 

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Trade Sector Updates – Falling Exports, TIES, MEIS, Foreign Trade Policy, etc.

Centre restores RoDTEP Scheme

Why in the News?

To boost India’s export strength, the government has restored Remission of Duties and Taxes on Exported Products (RoDTEP) Scheme benefits for eligible exports starting June 1, 2025.

Details of the Latest Update:

  • RoDTEP benefits have now been restored for Advance Authorization (AA) holders, Export-Oriented Units (EOUs), and Special Economic Zones (SEZs).
  • These categories were previously excluded from February 5, 2025, but are now eligible again from June 1, 2025.
  • The move ensures a level playing field for all exporters and encourages broad-based export growth.

About the RoDTEP Scheme:

  • Launch: It started on January 1, 2021, as part of the Foreign Trade Policy 2015–20.
  • Objective: It helps exporters get refunds for hidden taxes and duties that are not refunded under other schemes.
    • Examples of Hidden Taxes: These include taxes like electricity duty, mandi tax, and fuel charges during transport.
  • Why it was introduced: RoDTEP replaced the earlier Merchandise Export Incentive Schemes (MIES) after India lost a case at the World Trade Organisation (WTO).
  • Global Compliance: The scheme is WTO-compliant, following the rule that exported goods should not carry domestic taxes.
  • Administered by: It is managed by the Department of Revenue under the Ministry of Finance.

Eligibility under RoDTEP:

  • Who can apply: All Indian exporters — whether manufacturers or merchant exporters — are eligible.
  • Eligible exports: Exports from SEZs, EOUs, and e-commerce platforms are also covered.
  • Not Eligible: Re-exported goods are not eligible for benefits.
  • Sector Focus: The scheme gives priority to labour-intensive sectors that earlier benefitted from MEIS.

How the refund works:

  • Rebate Calculation: The refund is given as a percentage of the export value (Free on Board value).
  • Mode of Refund: The benefit comes in the form of e-scrips, which are stored in a digital ledger by the Central Board of Indirect Taxes and Customs (CBIC).
  • Usage of E-Scrips: These e-scrips can be used to pay basic customs duty or be transferred to other importers.
[UPSC 2020] With reference to the international trade of India at present, which of the following statements is/are correct?

1.  India’s merchandise exports are less than its merchandise imports.

2. India’s imports of iron and steel, chemicals, fertilizers and machinery have decreased in recent years.

3. India’s exports of services are more than its imports of services.

4. India suffers from an overall trade/current account deficit.

Select the correct answer using the code given below:

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

 

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GI(Geographical Indicator) Tags

Kumbakonam Vetrilai Betel Leaf gets GI Tag

Why in the News?

The Kumbakonam Vetrilai (betel leaf or paan leaf) has received the Geographical Indication (GI) tag from the Government of India.

About Kumbakonam Vetrilai

  • Cultivation: It is grown in the Thanjavur region, especially in Kumbakonam, Thiruvaiyaru, Papanasam, Thiruvidaimarudur, and Rajagiri.
  • Characteristics: The leaf is heart-shaped, dark to light green, with a strong aroma and pungent taste, thanks to the fertile Cauvery basin soil.
  • Cultural Importance: It is a main ingredient in paan, a popular post-meal chew in South Asia.
  • Harvest: The first-year yield, called maaruvethalai, produces the largest and longest-lasting leaves (6–7 days shelf life); Farmers hand-pick leaves, working from early morning until late night due to the labour-heavy process.

Back2Basics: Geographical Indication (GI) Tag

  • A GI is a sign used on products that have a specific geographical origin and possess qualities or a reputation that are due to that origin.
  • Nodal Agency: Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry
  • India, as a member of the World Trade Organization (WTO), enacted the Geographical Indications of Goods (Registration and Protection) Act, 1999 w.e.f. September 2003.
  • GIs have been defined under Article 22 (1) of the WTO Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS) Agreement.
  • The tag stands valid for 10 years and can be renewed.

 

[UPSC 2015] Which of the following has/have been accorded ‘Geographical Indication’ status?

(1) Banaras Brocades and Sarees (2) Rajasthani Daal-Bati-Churma (3) Tirupathi Laddu

Select the correct answer using the code given below.

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

 

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Wildlife Conservation Efforts

Conservation of Dugongs

Why in the News?

May 28 is celebrated every year as World Dugong Day.

Conservation of Dugongs

About Dugongs:

  • Species Info: Dugong dugon, also known as sea cows, are herbivorous marine mammals closely related to manatees but live only in saltwater.
  • Habitat: They live in shallow coastal waters and are mainly found in the Andaman and Nicobar Islands, Gulf of Mannar, Palk Bay, and Gulf of Kutch.
  • Diet and Role: Dugongs feed on seagrass species like Cymodocea, Halophila, Thalassia, and Halodule. As they graze, they stir up the seabed, earning the nickname “farmers of the sea.”
  • Lifespan and Behaviour: They can live up to 70 years and are usually solitary or seen in mother-calf pairs.
  • Reproduction: Females mature at 9–10 years and give birth every 3–5 years, resulting in a slow population growth of about 5% per year.
  • Conservation Concern: India’s dugong population has dropped to an estimated 200 individuals, with shrinking range and numbers.

Conservation Efforts in India:

  • IUCN Status: Dugongs are listed as ‘Vulnerable’ globally and ‘Regionally Endangered’ in India.
  • Legal Protection: They are protected under Schedule I of the Wild Life (Protection) Act, 1972.
  • Global Agreements: India joined the Convention on Migratory Species in 1983 and signed the Dugong Conservation MoU in 2008.
  • Dugong Reserve: In 2022, India established its first Dugong Conservation Reserve in Palk Bay, Tamil Nadu, covering 448.3 sq. km.
[UPSC 2015] With reference to ‘dugong’ a mammal found in India, which of the following statements is/are correct?

1. It is a herbivorous marine animal. 2. It is found along the entire coast of India. 3. It is given legal protection under Schedule I of the Wildlife (Protection) Act 1972.

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

 

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Global Geological And Climatic Events

What is Magnetic Flip-Flop?

Why in the News?

In 2024, a soundtrack was released inspired by the Laschamps event, a magnetic flip-flop that occurred 41,000 years ago when Earth’s magnetic field weakened to just 5% and the poles briefly reversed.

What is Magnetic Flip-Flop?

  • Definition: A magnetic flip-flop is when Earth’s magnetic poles reverse, with the north and south poles switching places.
  • Magnetic Field Source: Earth’s magnetic field is generated by the movement of molten iron in the outer core, acting like a giant magnet.
  • Reversal Types:
    • A long-term change is called a geomagnetic reversal.
    • A short-lived, temporary switch is a geomagnetic excursion.
  • Field Behavior: During a reversal, the magnetic field weakens significantly and the direction of field lines flips.
  • Occurrence: These events are irregular and unpredictable.

Recent Magnetic Reversals and Excursions:

  • Last Major Reversal: The Brunhes–Matuyama reversal occurred about 780,000 years ago.
  • Known Excursions:
    • Norwegian-Greenland Sea event (~64,500 years ago)
    • Laschamps excursion (~41,000 years ago), when field strength dropped to 5% of today’s level
    • Mono Lake excursion (~34,500 years ago)
  • Indian Evidence: Excursions found in Uttarakhand (Bagwalipokar), dated to 15,500–14,700 years and 8,000–2,850 years ago.
  • Pole Movement: Since 1831, the north magnetic pole has shifted 1,100 km toward Siberia and now moves at 35 km/year, while the south pole is more stable.

Implications of Magnetic Flip-Flop:

  • Radiation Exposure: A weaker magnetic field during flip-flop allows more cosmic radiation, affecting:
    • Satellites and astronauts
    • Navigation and communication systems
    • Power grids and electronics
  • Protective Shield: Earth’s atmosphere still protects against harmful radiation even when the magnetic field is weak.
  • Climate & Ozone Effects: Events like Laschamps may have altered the ozone layer and climate, but no confirmed link to mass extinctions.
  • South Atlantic Anomaly: A current weak-field region affecting spacecraft over South America and South Africa.
  • Monitoring Tools: Scientists use satellites, ice cores, volcanic rocks, and geomagnetic observatories to track field changes.
  • Global Guidance: The World Magnetic Model, updated every 5 years, supports navigation systems worldwide.
  • Prediction Outlook: Though timing of future reversals is uncertain, computer models and cosmic data are improving forecasts.
[UPSC 2017] Consider the following statements:

1. The Earth’s magnetic field has reversed every few hundred thousand years.

2. When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide.

3. When living organisms originated, they modified the early atmosphere of the Earth.

Which of the statements given above is/are correct?

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

 

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