💥UPSC 2027,2028 Mentorship (May Batch) + Access XFactor Notes & Microthemes PDF
Talk to mentor

Civilsdaily

Login

Type: Prelims Only

  • Coal and Mining Sector

    Tantalum Reserves found in Sutlej River

    Prelims Only | Economics | Mains Paper 3: Infrastructure: Energy, Ports, Roads, Airports, Railways Etc.

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Sutlej River, Tantalum

    Mains level: Read the attached story

    tantalum

    Central Idea

    • Researchers from IIT-Ropar have found the presence of tantalum in Punjab’s Soil in Sutlej River Basin.
    • Although the source of tantalum in Sutlej is not clear yet. It could be due to movement of tectonic plates in the Himalayan region that is likely to contain the rare metal.

    Sutlej River

     

    • Origin: Starts from Lake Rakshastal in Tibet, near Mount Kailash.
    • Length: About 1,500 kilometres (930 miles); Longest of the five rivers of Punjab.
    • Path: Flows through Tibet, India (Himachal Pradesh, Punjab), and Pakistan.
    • Tributaries: Major tributary includes the Beas River in India.
    • Indus River System: Part of this system, joins the Chenab River in Pakistan.
    • Economic Role: Crucial for irrigation, and hydroelectric power (e.g., Bhakra Nangal Dam).
    • International River: Governed by treaties like the Indus Water Treaty between India and Pakistan.

    About Tantalum

    • A Rare and Valuable Metal: Tantalum, with the atomic number 73, is a rare metal crucial in electronics and semiconductors. It is a dense, hard, gray metal, known for being one of the most resistant to corrosion.
    • Exceptional Corrosion Resistance: Tantalum’s resistance to corrosion comes from its ability to form a protective oxide layer when exposed to air. This layer holds up even in very acidic environments.
    • Flexible and Durable: Pure tantalum is ductile, meaning it can be stretched into thin wires without breaking. It resists chemical damage below 150°C but is vulnerable to hydrofluoric acid and certain other substances.

    Historical Background

    • Swedish Discovery: Tantalum was first identified by Swedish chemist Anders Gustaf Ekenberg in 1802 in Ytterby, Sweden. Initially, it was confused with niobium, a similar element.
    • Differentiating Tantalum and Niobium: In 1866, Swiss chemist Jean Charles Galissard de Marignac established that tantalum and niobium are distinct elements.
    • Behind the name: The metal is named after Tantalus, a character from Greek mythology, known for his eternal punishment of being unable to reach the water and fruit around him. The name reflects the metal’s property of being ‘tantalizingly’ insoluble in acids.

    Uses of Tantalum

    • Tantalum capacitors are key in electronics, known for their ability to store a lot of electricity in a small space with minimal leakage. They’re used in smartphones, laptops, and cameras.
    • High melting point makes tantalum a substitute for platinum in various industries, including chemical and nuclear plants, aerospace, and missile systems.
    • Its non-reactive nature makes it perfect for surgical tools and implants, like artificial joints.
    • Tantalum carbide, when mixed with graphite, forms one of the hardest materials, used to enhance the cutting edges of high-speed machine tools.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • RBI Notifications

    What RBI’s increase in Risk Weights mean to the borrower?

    Prelims Only | Economics | Mains Paper 3: Indian Economy

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Risk Weights

    Mains level: NA

    Central Idea

    • The Reserve Bank of India (RBI) recently raised risk weights for unsecured loans, including credit cards, consumer durable loans, and personal loans.
    • Risk weights for bank lending to non-banking finance companies (NBFCs) serving this segment were increased to 125% from the existing 100%.

    What are Risk Weights?

    • Capital Implication: Every rupee lent by a bank has an impact on its capital position.
    • Attribution to Risk: Risk weights are assigned to loans and assets based on their nature and associated risk.
    • Capital Coverage: Banks must ensure that their capital is sufficient to cover these risk-weighted assets.
    • Varying Risk Weights: Different asset classes have varying risk weights. For example, home loans may have risk weights ranging from 50% to 75%, while corporate loans are assigned 100% risk weight.

    How does it impact Borrowers?

    • Interest Rates: Lower risk weights result in lower interest rates for borrowers. This principle guides the pricing of loans.
    • Examples: Home loans generally have lower interest rates due to their lower risk weights, while personal loans and credit cards carry higher interest rates due to their risk profile.

    RBI Decision: Concerns about Consumer Loans

    • Rising Share: Unsecured loans have seen rapid growth, constituting 10% of the banking system’s portfolio.
    • Fastest-Growing Segment: This segment has been the fastest-growing in recent years.
    • Unsecured Nature: Loans like consumer durable loans lack income-generating assets, making it challenging to ascertain borrowers’ true repayment capacity.
    • Granular Nature: While small-ticket in nature, the significant growth in this segment has raised regulatory concerns.

    https://www.thehindubusinessline.com/blexplainer/bl-explainer-what-rbis-increase-in-risk-weights-mean-to-the-borrower/article67554070.ece

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Health Sector – UHC, National Health Policy, Family Planning, Health Insurance, etc.

    Mosquitofish: India’s Battle against Invasive Species

    Prelims Only | Governance | Mains Paper 2: Health & Education

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Mosquitofish

    Mains level: Read the attached story

    Mosquitofish

    Central Idea

    • In recent months, Indian states such as Andhra Pradesh, Odisha, and Punjab have introduced mosquitofish to combat mosquito infestations.
    • However, the unintended ecological consequences of introducing this invasive species have raised concerns.

    Backgrounder: Vector Borne Diseases

    • Global Mosquito-Borne Disease Prevalence: Mosquito-borne diseases affect over 150 countries and 500 million people worldwide.
    • India’s Burden: India alone reports approximately 40 million cases of mosquito-borne diseases annually.

    What is Mosquitofish?

    • Introduction in the 1960s: In the 1960s, biological control methods were adopted to combat mosquitoes, including the introduction of mosquitofish (Gambusia species).
    • Environmental Alternatives: These methods were considered environmentally friendly alternatives to chemical pesticides, which posed health and environmental risks.
    • Global Proliferation: Mosquitofish, originally from the U.S., have now become widespread globally, adapting to various environments with adverse ecological impacts.

    Mosquitofish in India

    • Historical Introduction: In 1928, Gambusia was introduced in India during British rule, mainly for malaria control.
    • Multiple Authorities Involved: Various governmental and private organizations, including the Indian Council of Medical Research (ICMR), National Institute of Malaria Research (NIMR), municipal corporations, and health departments, introduced mosquitofish across India.

    Ecological Impact

    • Invasive Alien Species: Mosquitofish are considered among the hundred most detrimental invasive alien species.
    • Negative Effects: They prey on native fauna, leading to the extinction of native fish, amphibians, and freshwater communities.
    • Examples from Other Countries: Australia and New Zealand have reported similar ecological harm due to introduced mosquitofish.
    • WHO’s Stand: The World Health Organization stopped recommending Gambusia for mosquito control since 1982.

    Current Situation and Recommendations

    • Enforcement Measures: Stringent enforcement measures are essential to prevent further introduction of mosquitofish and mitigate past introductions’ consequences.
    • Alternative Solutions: Collaboration between mosquito biologists, entomologists, invasion ecologists, and fish taxonomists is suggested to identify native fish species capable of controlling mosquito larvae.
    • Local Solutions: Local alternatives should be favored over invasive species to preserve indigenous aquatic biodiversity and native species’ well-being.
    • National Centre for Vector Borne Diseases Control (NCVBDC): The NCVBDC should remove its recommendation for the use of Gambusia and Poecilia (guppy) fishes for mosquito control.

    Conclusion

    • India faces a pressing ecological challenge with the unintended consequences of mosquitofish introduction.
    • To safeguard the environment and native species, stringent enforcement and local solutions should replace invasive species in mosquito control efforts.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • International Space Agencies – Missions and Discoveries

    NASA’s AWE Mission: Linking Earth’s and Space Weather

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Atmospheric Waves Experiment (AWE)

    Mains level: NA

    AWE Mission

    Central Idea

    • NASA is set to launch the Atmospheric Waves Experiment (AWE) to investigate how Earth’s weather influences Space weather.

    What is AWE Mission?

    • As part of NASA’s Heliophysics Explorers Program, the AWE mission aims to shed light on the interactions between Earth’s weather and Space weather.
    • Mounted on the International Space Station (ISS), AWE will observe Earth’s airglow bands from an exceptional viewpoint.
    • AWE will analyze airglow in the mesopause region (about 85-87 km above Earth) to understand AGW behavior and its influence on Space weather.
    • The mission includes the Advanced Mesospheric Temperature Mapper (ATMT) to precisely map temperature variations in the mesopause, revealing airglow dynamics.

    Space Weather Explained

    • Space weather, much like Earth’s weather, is influenced by solar activities like flares and emissions, and it impacts the surrounding cosmic environment.
    • Variations in Space weather can disrupt essential services on Earth, including satellite communications, GPS systems, and power grids.
    • Interestingly, Earth’s own weather conditions also significantly affect Space weather, creating a complex interplay between our planet and the cosmos.

    How do Atmospheric Gravity Waves (AGWs) impact space weather?

    • Nature’s Oscillations: AGWs are similar to ripples caused by a stone thrown into a pond. They are vertical waves generated by sudden atmospheric changes or extreme weather, causing air to move up and down.
    • Various Sources: AGWs originate from events like thunderstorms and hurricanes, and they travel from the lower atmosphere to Space, influencing Space weather.
    • Thriving in Stability: AGWs are most prominent in stable atmospheric conditions, where they create wave-like patterns due to temperature differences in rising air.
    • Vital Atmospheric Profiling: To fully understand AGWs and their impact on terrestrial and Space weather, detailed data on the atmosphere’s vertical profile is essential.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Global Geological And Climatic Events

    Understanding Eclipses: Why they don’t happen every Month

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Eclipses

    Mains level: Read the attached story

    Eclipse

    Central Idea

    • While Eclipses are intriguing, one might wonder why eclipses do not occur with every new and full moon.

    What are Eclipses?

    • Eclipses are astronomical events that occur when the sun, moon, and Earth align in specific ways.
    • There are two primary types of eclipses: solar and lunar.
    • A solar eclipse happens when the moon comes between the sun and Earth during a new moon, blocking out the sun’s light.
    • Conversely, a lunar eclipse occurs when the Earth is positioned between the sun and the moon during a full moon, casting a shadow on the moon.

    Visit this page to read more about Eclipses:

    What are Eclipses?

    Why is there no eclipse every full and new moon?

    Ans. Moon’s Unique Orbit

    • Moon’s Path: The moon orbits around Earth, completing one orbit roughly every month.
    • Ecliptic Plane: In an ideal scenario, if the moon’s orbit matched Earth’s orbital plane, called the ecliptic, we would witness a solar eclipse during every new moon and a lunar eclipse during every full moon.
    • Moon’s Inclination: However, the moon’s orbit is inclined at an angle of about 5 degrees to Earth’s orbital plane, causing irregular eclipse patterns.

    Role of Lunar Nodes

    • Lunar Nodes: The moon’s orbit intersects Earth’s orbital plane at specific points known as nodes, categorized as ascending or descending nodes depending on the moon’s orbital direction.
    • Eclipse Occurrence: Eclipses happen when a full or new moon closely aligns with one of these nodes, ensuring the sun, moon, and Earth are in alignment.

    Eclipse Pairs and Seasons

    • Eclipse Pairs: Solar and lunar eclipses typically occur in pairs, with one following the other within a two-week period.
    • Eclipse Seasons: Eclipse seasons, lasting around 34 to 35 days, usually feature two eclipses – one solar and one lunar. Occasionally, three eclipses may occur in a single season.
    • Frequency: Contrary to common perception, there are more eclipses than expected, with the 21st century witnessing 224 solar eclipses and 230 lunar eclipses.

    Understanding the Lunar Nodes and Eclipses

    • Eclipse Seasons: Eclipse seasons take place approximately every 173 days when the lunar nodes precisely align with the Earth and the sun.
    • Moon’s Progression: The moon’s phases shift about 30 degrees along the zodiac every month concerning the nodes.
    • Future Eclipses: After a pair of eclipses, the next pair usually occurs nearly 6 calendar months later.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • Foreign Policy Watch: India-United States

    Exercise ‘Vajra Prahar 2023’ Commences in Meghalaya

    Prelims Only | International Relations | Mains Paper 2: Bilateral, Regional and Global Groupings and agreements involving India

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Exercise Vajra Prahar

    Mains level: NA

    Central Idea

    • Recently, the 14th edition of the Vajra Prahar 2023 exercise, a joint venture between India and the USA Special Forces, concluded in Bakloh, Himachal Pradesh. Here are the key highlights:

    Exercise Vajra Prahar

    • Vajra Prahar is an annual exercise alternately hosted by the Special Forces of India and the United States.
    • These Special Forces units are dedicated to covert operations, counterterrorism, and other specialized military tasks.
    • It is crucial for addressing the security challenges both nations face in the current global context.
    • It has reinforced the friendship and defence cooperation between the Special Forces of India and the USA.

    Objectives

    • The 21-day joint exercise aimed to enhance skills in Airborne Operations, Special Operations, and Counter Terrorism under the United Nations Charter.
    • It was divided into two stages:
      1. The initial stage focused on combat conditioning and tactical special mission training.
      2. The second stage involved a 48-hour validation exercise to assess the training received in the first phase.

    Other Joint Exercises between India and the USA

    • Yudh Abhyas: Annual army exercise focusing on enhancing military cooperation and understanding.
    • Malabar Exercise: Naval exercise, also including Japan and Australia, focusing on complex maritime operations.
    • Cope India: Air force exercise aimed at improving interoperability and mutual understanding between air forces.
    • Tiger Triumph: Tri-service amphibious exercise focusing on humanitarian assistance and disaster relief.
    • Red Flag: Advanced aerial combat training exercise involving the U.S. Air Force and international participants, including India.
    • Spartan Shield: Army exercise aimed at building operational capacity in counter-insurgency and counter-terrorism.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

  • International Space Agencies – Missions and Discoveries

    Gamma-Ray Burst in faraway Galaxy disturbed Earth’s Ionosphere

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Gamma-ray bursts (GRBs)

    Mains level: NA

    Central Idea

    • A Star’s Explosive End: About two billion years ago, far beyond our Milky Way galaxy, a huge star exploded into a supernova. This explosion sent out a massive burst of gamma rays, the most powerful type of energy wave in the electromagnetic spectrum.
    • Gamma-Ray Bursts: These bursts are short-lived but incredibly intense, often associated with the most dramatic events in the universe, like the death of massive stars.

    Why discuss this?

    • These gamma rays travelled across space for billions of years, finally reaching Earth in 2022.
    • When they arrived, they caused a significant disturbance in Earth’s ionosphere, a layer of electrically charged gases high in our atmosphere.

    What are Gamma-Ray Bursts?

    • What Are They? Gamma-ray bursts (GRBs) are incredibly intense flashes of gamma rays, which are the most energetic form of light in the electromagnetic spectrum. These bursts are the most powerful explosions observed in the universe.
    • How They Occur: They usually happen when massive stars collapse into neutron stars or black holes, or during the merger of neutron stars. These cosmic catastrophes release a tremendous amount of energy.
    • Duration and Energy: GRBs can last from a few milliseconds to several hours, but they typically last a few seconds. The amount of energy released in this short time can be more than the Sun will emit in its entire 10-billion-year lifetime.
    • Afterglow: Following the initial burst, GRBs are often followed by an ‘afterglow’ emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, and radio).

    Earthly Consequences and Research

    • Lasting Effects: The gamma rays disturbed the ionosphere for several hours and even set off lightning detectors in India.
    • Scientific Importance: Although this burst didn’t harm life on Earth, it showed how sensitive our ionosphere is to space events.
    • A Rare Event: Such a powerful gamma-ray burst is expected to hit Earth only once every 10,000 years.

    Looking Ahead: Protecting Earth from Cosmic Threats

    • Preparing for Future Events: Scientists are studying the potential risks of a similar event happening closer to Earth, within our own Milky Way.
    • Low Risk: However, the chance of such a dangerous event happening is very low.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

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

    Langlands Program: Making Complex Math Connections Easier to Understand

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Langlands Program

    Mains level: Not Much

    Central Idea

    • Robert Langlands, a mathematician famous for his “Langlands Program,” has shifted his focus to Turkish literature in his later years.
    • This program is about finding deep links between two areas of math: number theory (the study of numbers) and harmonic analysis (a type of math that breaks down functions or signals into simpler parts).

    Langlands Program: A Journey to Connect Different Math Areas

    • Beginning: In 1967, Robert Langlands, a young mathematician at Princeton, started this journey with a letter to another mathematician, Andre Weil, sharing some groundbreaking ideas.
    • Complex Ideas: The program is full of complicated ideas that are hard for even experts to fully understand.
    • Goal: It aims to connect number theory and harmonic analysis, two areas of math that don’t seem related at first.

    The Purpose of the Program

    • Abel’s Discovery: In 1824, Niels Henrik Abel showed that it’s impossible to find a one-size-fits-all solution for certain math equations (polynomial equations) beyond a certain complexity.
    • Galois’s Approach: Evariste Galois, who didn’t know about Abel’s work, suggested looking at patterns (symmetries) in the solutions of these equations instead of trying to solve them directly.
    • Galois Groups: These are groups that show the patterns in the solutions of these equations and are key to the Langlands Program.
    • Linking Ideas: The program tries to connect these Galois groups with something called automorphic functions, which would allow using calculus (a branch of math) to explore these equations, connecting harmonic analysis and number theory.

    Automorphic Functions: Connecting Different Areas of Math

    • Example of Automorphic Function: Think of functions that have a repeating pattern, like the way sine functions in trigonometry work.
    • Special Symmetry: Automorphic functions have a unique property where they remain the same even after certain transformations, showing a special kind of symmetry.
    • Role in Langlands Program: The program’s goal is to link these special functions with Galois groups, leading to new ways of understanding and solving math problems.

    Impact of the Program

    • Solving an Old Puzzle: In 1994, Andrew Wiles and Richard Taylor used ideas from the Langlands Program to solve Fermat’s Last Theorem, a famous and old math problem.
    • Creating New Functions: This program helps in making new types of automorphic functions, which could help solve other complex math problems, like the Ramanujan conjectures.
    • Geometric Langlands: This is a branch of the Langlands Program that looks at connections between different fields like algebraic geometry, representation theory, and even physics.
    • Math and Physics Connection: Recent studies suggest that this program might help in understanding things in physics, like the study of electromagnetic waves.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

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

    Freemartins in Animal Husbandry

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

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Freemartinism

    Mains level: NA

    Central Idea

    • In the realm of animal husbandry, a phenomenon known as Freemartinism sheds light on the extraordinary diversity found in cattle.

    Freemartinism: A Unique Phenomenon

    • Freemartins are sterile female cattle born exhibiting characteristics of both sexes.
    • This phenomenon arises when a male and a female twin develop within the same uterus, occurring in approximately 90% of twin pregnancies in cattle.
    • The exchange of blood between the male and female foetuses during gestation plays a pivotal role in Freemartinism.
    • Freemartinism is primarily attributed to the sharing of cells carrying the Y chromosome from the male twin with the female twin.
    • Y chromosome triggers the development of male reproductive organs in the male foetus, while the female foetus, influenced by male hormones, undergoes incomplete development of its reproductive system.
    • Freemartins possess underdeveloped or non-functional reproductive tracts, rendering them incapable of reproduction.

    Agricultural Significance

    • In agricultural settings, identifying freemartins is crucial to enhance reproductive efficiency in cattle breeding.
    • Farmers often utilize physical and behavioural traits to identify freemartins, subsequently removing them from the breeding herd.
    • This culling strategy helps improve the overall breeding program by ensuring that non-reproductive cattle do not contribute to the herd.

    Get an IAS/IPS ranker as your 1: 1 personal mentor

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

    Who was Lachit Borphukan?

    Prelims Only | History | Mains Paper 1: Arts & Culture

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Lachit Borphukan

    Mains level: NA

    Lachit Borphukan

    Central Idea

    • An animation film on an iconic Ahom general Lachit Borphukan has been selected for the International Film Festival of India (IFFI) 2023 to be held in Goa.

    Lachit Borphukan

    • Lachit Borphukan was a legendary military commander from the northeastern region of India, specifically from the state of Assam. Here are some facts related to him:
    Description
    Timeline 1622-1672
    Dynasty Ahom Dynasty
    Mughal Threat Faced the Mughal Empire’s expansion into Assam
    Battle of Saraighat Led Ahom forces to victory against the Mughals in 1671

    Defended Assam against the Aurangzeb’s forces led by Ram Singh
    Leadership Known for strategic brilliance and guerrilla tactics
    Legacy Revered as a symbol of Assamese pride and resistance
    INS Lachit Indian Navy’s guided-missile destroyer named in honor
    Lachit Divas Celebrated annually on November 24th in Assam

     

    https://www.thehindu.com/news/national/other-states/assam-ips-officer-directed-animation-film-chosen-for-iffi-2023/article67550668.ece

     

    Get an IAS/IPS ranker as your 1: 1 personal mentor