💥UPSC 2026, 2027, 2028 UAP Mentorship (March Batch) + Access XFactor Notes & Microthemes PDF

Type: Prelims Only

  • Innovations in Biotechnology and Medical Sciences

    Indigenous Drug for Sickle Cell Disease developed

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Sickle Cell Disease (SCD), Anemia

    Mains level: NA

    sickle cell

    What is the news-

    • Based in Delhi, Akmus Drugs and Pharmaceutical Limited unveiled a groundbreaking drug for sickle cell disease on March 16.
    • This drug marks India’s first indigenous, room-temperature stable solution for sickle cell disease, available at a mere 1% of the global price.

    What is Sickle Cell Disease (SCD)?

     

    • Sickle Cell Disease (SCD) is a genetically inherited red blood cell disorder.
    • It causes red blood cells to become hard, sticky, and sickle-shaped due to abnormal hemoglobin.
    • This abnormality leads to complications such as pain, infections, acute chest syndrome, and stroke.
    • Different types of SCD include HbSS, HbSC, and HbS beta thalassemia, each varying in severity.
    • SCD is diagnosed through a simple blood test, often identified at birth through new-born screening.
    • Treatment focuses on managing complications with options like bone marrow or stem cell transplantation, gene therapies, and medications like hydroxyurea to reduce symptoms and prevent complications.
    • The recent approval of Casgevy, a groundbreaking gene therapy utilizing Crispr-Cas9 technology,  represents a monumental achievement SCD Treatment.

    About Akmus Sickle Cell Drug

    • The oral suspension of Hydroxyurea is the basic component of the drug.
    • Priced at less than ₹600, the drug is poised to revolutionize access to treatment for sickle cell disease patients nationwide.
    • It is tailored for patients across all age groups.
    • It offers convenience and precision in dosage administration through provided oral syringes.

    What makes it a revolutionary drug?

    • Room Temperature Stability: Unlike imported hydroxyurea solutions requiring storage at 2-8 degrees Celsius, Akmus Pharmaceuticals’ formulation ensures accessibility without stringent storage conditions.
    • Cost-Efficiency: With the global brand priced at approximately ₹77,000, Akmus’ solution underscores a paradigm shift towards affordable medication.

    Sickle Cell Disease Menace in India

     

    • Prevalence among STs: Sickle cell disease is a genetic disorder mostly prevalent in districts with high tribal populations. About one in 86 births among STs have sickle cell disease that affects haemoglobin in red blood cells, resulting in morbidity and mortality (as per WHO).
    • Health Priority: Recognizing sickle cell disease as a significant health challenge, India has identified it among the top 10 issues disproportionately affecting tribal communities.
    • National Mission:  The National Sickle Cell Anemia Elimination Mission launched in 2023, aims to eliminate sickle cell anemia from India by 2047.

     


    PYQ:

    Q. Consider the following statements in the context interventions being undertaken under Anaemia Mukt Bharat Strategy: (2023)

    1. It provides prophylactic calcium supplementation for pre-school children, adolescents and pregnant women.
    2. It runs a campaign for delayed cord clamping at the time of child-birth.
    3. It provides for periodic deworming to children and adolescents.
    4. It addresses non-nutritional causes of anaemia in endemic pockets with special focus on malaria, hemoglobinopathies and fluorosis.

    How many of the statements given above are correct?

    1. Only one
    2. Only two
    3. Only three
    4. All four

    Practice MCQ:

    Q. Regarding the prevalence of Sickle Cell Disease (SCD) in India, consider the following statements:

    1. Sickle cell disease is a hereditary disorder affecting affects haemoglobin in red blood cells.
    2. About one in 86 births among STs have sickle cell disease.
    3. India has identified it among the top 10 issues disproportionately affecting tribal communities.
    4. The National Sickle Cell Anemia Elimination Mission, aims to eliminate sickle cell anemia from India by 2030.

    How many of the given statements is/are correct?

    1. One
    2. Two
    3. Three
    4. Four
  • Modern Indian History-Events and Personalities

    Nana Jagannath Shankarseth: The ‘Architect of Mumbai’

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Nana Jagannath Shankarseth and his contributions

    Mains level: NA

    Why in the news-

    • The Maharashtra cabinet has resolved to request the Ministry of Railways to rename Mumbai Central station after Nana Jagannath Shankarseth, a revered social reformer, educationist, and philanthropist often hailed as the “architect” of Mumbai.

    About Nana Jagannath Shankarseth (1803-1865)

    • Born on February 10, 1803, in Murbad, Thane, into the affluent Murkute family.
    • His father, Shankar Murkute, earned the nickname “Shankar Sheth” due to his success in the jewellery and diamond trade.
    • He contributed in terms of both ideas and money to multiple sectors, to lay a strong foundation for the Bombay City.
    • He was greatly inspired by the legendary merchant and philanthropist Sir Jamsetjee Jeejeebhoy.

    Contribution of Nana Jagannath Shankarseth

    • Founded the Bombay Association in 1852, the first political organization in Mumbai, fostering a platform for civic engagement and political discourse.
    • Played a pivotal role as one of the founding members of the Great Indian Peninsula Railway in 1853, contributing to India’s infrastructural development.
    • Recognized the importance of education in societal progress and opened the first school for girls in Mumbai in 1849, pioneering educational reform.
    • Co-founded the School Society and the Native School of Bombay, laying the foundation for educational institutions that nurtured future leaders such as Dadabhai Naoroji and Gopal Krishna Gokhale.
    • Established the Bombay Native Education Society in 1822, the first of its kind in Western India, to promote education among the masses.
    • Collaborated with Sir George Birdwood and Dr Bhau Daji in major reconstruction efforts in Mumbai starting in 1857, transforming the city’s urban landscape.
    • Became the first Indian to be nominated to the Bombay Legislative Council in 1861, advocating for policies that improved public welfare and urban amenities.
    • Honored with a marble statue at the Asiatic Society of Mumbai a year after his death in 1865, commemorating his contributions to society.

     


     

    Try this PYQ from CSE Prelims 2012:

    Q.The most effective contribution made by Dadabhai Naoroji to the cause of Indian National Movement was that he-

    1. exposed the economic exploitation of India by the British
    2. interpreted the ancient Indian texts and restored the self-confidence of Indians
    3. stressed the need for eradication of all the social evils before anything else

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

     

    Practice MCQ:

    Q. Consider the following events:

    He founded the Bombay Association in 1852, the first political organization in Mumbai, fostering a platform for civic engagement and political discourse. Recognizing the importance of education in societal progress, he opened the first school for girls in Mumbai in 1849, pioneering educational reform. He became the first Indian to be nominated to the Bombay Legislative Council in 1861, advocating for policies that improved public welfare and urban amenities.

    The above description is mentioned about which of the following personality?

    a) Gopal Krishna Gokhale

    b) Maharshi Vitthal Ramji Shinde

    c) Nana Jagannath Shankarseth

    d) Dhondo Keshav Karve

     

     

  • Defence Sector – DPP, Missions, Schemes, Security Forces, etc.

    AH-64E Apache Attack Helicopters Fleet inducted to the Army

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: AH-64E Apache Attack Helicopters

    Mains level: Read the attached story

    Why in the news-

    • The Indian Army Aviation Corps inaugurated its first unit of AH-64E Apache Attack Helicopters into its fleet at Jodhpur Air Base.

    AH-64E Apache Attack Helicopters

    • The AH-64E Apache also known as ‘Apache Guardian’ is widely recognized as the world’s most advanced multi-role combat helicopter.
    • It originates from the United States and is manufactured by Boeing.
    • In February 2020, India sealed a deal with Boeing for the acquisition of six AH-64E for the Army, with an additional six helicopters contracted subsequently.
    • Several countries have acquired the AH-64E, including India, Egypt, Greece, Indonesia, Israel, Japan, South Korea, Kuwait, Netherlands, Qatar, Saudi Arabia, Singapore, UAE, and the UK.
    Indigenous Push

    • Tata Boeing Aerospace Limited (TBAL), a joint venture between Boeing and Tata Advanced Systems Ltd. (TASL), was established in 2016 to manufacture fuselages for the AH-64 Apache.
    • TBAL’s Hyderabad facility has been delivering AH-64 Apache fuselages since 2018.
    • The advanced manufacturing facility will eventually become the sole producer of AH-64 fuselages in the world, with 90% of parts sourced from Indian suppliers.

    Combat Features

    • Engineered with an open systems architecture to integrate cutting-edge communications, navigation, sensor, and weapon systems.
    • Boasts enhanced thrust and lift capabilities, joint digital interoperability, improved survivability, and cognitive decision aiding.
    • Incorporates a new integrated infrared laser for simplified target designation and upgraded infrared imagery blending infrared with night vision capabilities.

    Strategic Significance of the Induction

    • Enhancing Combat Capability: The induction of Apache helicopters marks a significant advancement for the Army Aviation Corps, providing formidable firepower and maneuverability in combat scenarios.
    • Complementing Indigenous Capabilities: The Apaches will complement the indigenous Light Combat helicopter (LCH), strengthening the Army’s aerial combat capabilities.
    • Replacing the ageing arsenal: The Apache fleet is set to will replace the Russian Mi-35 attack helicopters in service.

    Try this PYQ from CSE Prelims 2018:

    Q.What is “Terminal High Altitude Area Defense (THAAD)”, sometimes seen in the news?

    (a) An Israeli radar system

    (b) India’s indigenous anti-missile programme

    (c) An American anti-missile system

    (d) A defence collaboration between Japan and South Korea

    Practice MCQ:

    What is “AH-64E Apache Guardian “, sometimes seen in the news?

    (a) Multi-role Helicopter

    (b) Radar

    (c) Anti-Tank Missile

    (d) Air-Defence System

     

  • RBI Notifications

    RBI may move some NBFCs to Top Layer this year

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: NBFCs and their operations, Scale-Based Regulation of NBFCs

    Mains level: NA

    In the news

    • Nearly two years after introducing a revised regulatory framework for non-banking finance companies (NBFCs), the Reserve Bank of India is set to review the categorisation of NBFCs in 2024.
    • Currently, 16 NBFCs are placed in the upper layer.

    What are Non-Banking Financial Companies (NBFCs)?

    • A NBFC is a company registered under the Companies Act, 1956.
    • It engaged in the business of loans and advances, acquisition of shares/stocks/bonds/debentures/securities issued by Government or local authority or other marketable securities of a like nature, leasing, hire-purchase, insurance business, and chit business.
    • It does NOT include any institution whose principal business is that of agriculture activity, industrial activity, purchase or sale of any goods (other than securities) or providing any services and sale/purchase/construction of immovable property.

    How are NBFCs different from Bank?

    • NBFCs lends and make investments and hence their activities are akin to that of banks.
    • However, there are a few differences as given below:
    1. Commercial Banks are regulated under Banking Regulation Act, 1949.
    2. NBFC CANNOT accept demand deposits.
    3. NBFCs DO NOT form part of the payment and settlement system and cannot issue cheques drawn on itself.
    4. Deposit insurance facility of Deposit Insurance and Credit Guarantee Corporation is NOT available to depositors of NBFCs, unlike in case of banks.

    Different types/categories of NBFCs registered with RBI

    NBFCs are categorized:

    1. in terms of the type of liabilities into Deposit and Non-Deposit accepting NBFCs,
    2. non deposit taking NBFCs by their size into systemically important and other non-deposit holding companies (NBFC-NDSI and NBFC-ND) and
    3. by the kind of activity they conduct.

    Within this broad categorization the different types of NBFCs are as follows:

    Definition
    Asset Finance Company (AFC) A financial institution primarily engaged in financing physical assets used in productive/economic activities, such as automobiles, tractors, machinery, and industrial equipment.
    Investment Company (IC) A company whose principal business involves acquiring securities.
    Loan Company (LC) A financial institution primarily engaged in providing finance through loans, advances, or other means for activities other than its own.

    Does not include Asset Finance Companies.

    Infrastructure Finance Company (IFC) A non-banking finance company that deploys at least 75% of its total assets in infrastructure loans, with a minimum Net Owned Funds of ₹300 crore, a minimum credit rating of ‘A’ or equivalent, and a CRAR of 15%.
    Systemically Important NBFCs NBFCs with an asset size of ₹500 crore or more, as per the last audited balance sheet.

    Considered significant due to their potential impact on the overall financial stability of the economy.

     

    Scale-Based Regulation of NBFCs

    • Scale-based regulations came into effect in October 2021 and were implemented a year later by RBI.
    • There are four layers namely the base layer, middle layer, upper layer and top layer.
    • As on September 30, 2023, NBFCs in the base, middle and upper layers constituted 6 per cent, 71 per cent and 23 per cent of the total assets of NBFCs respectively.
    • Presently, no NBFC is listed in the top layer.

    Here’s a breakdown of the key aspects of the SBR:

    1. Base Layer (NBFC-BL)
    • The Base Layer primarily comprises non-deposit-taking NBFCs with assets below Rs 1,000 crore.
    • It encompasses NBFC Peer to Peer (P2P), NBFC-Account Aggregator (AA), Non-Operative Financial Holding Company (NOFHC), and NBFCs without public funds and customer interface.
    1. Middle Layer (NBFC-ML)
    • The Middle Layer includes deposit-taking NBFCs and non-deposit-taking NBFCs with assets exceeding Rs 1,000 crore.
    • It encompasses NBFCs involved in specific activities such as Standalone Primary Dealers (SPDs), Infrastructure Debt Fund – NBFCs (IDF-NBFCs), Core Investment Companies (CICs), Housing Finance Companies (HFCs), and Infrastructure Finance Companies (NBFC-IFCs).

    III. Upper Layer (NBFC-UL)

    • The Upper Layer comprises NBFCs identified by RBI as requiring enhanced regulatory requirements based on specific parameters and scoring methodology.
    • The top 10 eligible NBFCs in terms of asset size will always be placed in the Upper Layer, irrespective of other factors.
    1. Top Layer (NBFC-TL)
    • NBFCs in the Upper Layer may be transferred to the Top Layer if RBI perceives a significant increase in potential systemic risk.
    • Currently, the Top Layer remains vacant but serves as a precautionary measure for heightened risk situations.

     

    With inputs from: https://rbi.org.in/scripts/PublicationsView.aspx?Id=21580


    Practice MCQ:

    Q. With reference to the Scale-Based Regulation of Non-Banking Financial Companies (NBFCs), consider the following statements:

    1. Higher the layer, least is the regulatory intervention required by the RBI.
    2. Currently, no NBFC is listed in the top layer.

    Which of the given statements is/are correct?

    a) Only 1

    b) Only 2

    c) Both 1 and 2

    d) Neither 1 nor 2


    Try this PYQ from CSE 2020:

    1. If you withdraw ` 1,00,000 in cash from your Demand Deposit Account at your bank, the immediate effect on aggregate money supply in the economy will be:

    (a) to reduce it by ` 1,00,000

    (b) to increase it by ` 1,00,000

    (c) to increase it by more than ` 1,00,000

    (d) to leave it unchanged

     

    Post your answers here.
  • Social Media: Prospect and Challenges

    Centre bans 18 OTT Platforms for Inappropriate Content

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Laws governing OTT Ban

    Mains level: Read the attached story

    In the news

    • The Information & Broadcasting Ministry has blocked 18 OTT platforms on the charge of publishing obscene and vulgar content.

    How were these platforms banned?

    • The contents listed on the OTT platforms was found to be prima facie violation of:
    1. Section 67 and 67A of the Information Technology Act, 2000;
    2. Section 292 of the Indian Penal Code; and
    3. Section 4 of the Indecent Representation of Women (Prohibition) Act, 1986.
    • These platforms were violative of the responsibility to not propagate obscenity, vulgarity and abuse under the guise of ‘creative expression’.

    How are OTT Platforms regulated in India?

    • Regulatory Framework: The Information Technology (Guidelines for Intermediaries and Digital Media Ethics Code) Rules, 2021 introduce a Code of Ethics applicable to digital media entities and OTT platforms.
    • Key Provisions: These guidelines encompass content categorization, parental controls, adherence to journalistic norms, and the establishment of a grievance redressal mechanism to address concerns.

    [A] Content Regulations

    • Age-Based Classification: OTT platforms like Netflix and Amazon Prime are mandated to classify their content into five age-based categories: U (universal), 7+, 13+, 16+, and A (adult).
    • Parental Locks: Effective parental locks must be implemented for content classified as 13+, ensuring that parents can control access to age-inappropriate material.
    • Age Verification: Robust age verification systems are required for accessing adult content, enhancing parental oversight and safeguarding minors from exposure to inappropriate material.

    [B] Grievance Redressal Mechanism

    • Three-Tier System: A comprehensive grievance redressal mechanism consisting of three tiers has been established:
      1. Level-I: Publishers are encouraged to engage in self-regulation to address grievances and concerns internally.
      2. Level-II: A self-regulating body, headed by a retired judge from the Supreme Court or High Court or an eminent independent figure, will oversee complaints and ensure impartial resolution.
      3. Level-III: The Ministry of Information and Broadcasting will formulate an oversight mechanism and establish an inter-departmental committee tasked with addressing grievances. This body possesses the authority to censor and block content when necessary.

    [C] Selective Banning of OTT Communication Services

    • Parliamentary Notice: Concerns about the influence and impact of OTT communication services prompted a notice from a Parliamentary Standing Committee to the Department of Telecom (DoT).
    • Scope of Discussion: This discussion focuses exclusively on OTT communication services such as WhatsApp, Signal, Meta (formerly Facebook), Google Meet, and Zoom, excluding content-based OTTs like Netflix or Amazon Prime.
    • Regulatory Authority: Content regulation within OTT communication services falls under the jurisdiction of the Ministry of Information and Broadcasting (MIB), emphasizing the government’s commitment to ensuring responsible communication practices.
  • Health Sector – UHC, National Health Policy, Family Planning, Health Insurance, etc.

    Lyme Disease reported in Ernakulam

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Lyme Disease and its causative borrelia bacteria

    Mains level: NA

    In the news

    • A suspected case of Lyme disease caused by the bite of a tick carrying borrelia bacteria has been reported from Koovapady in Ernakulam district.

    What is Lyme Disease?

    • According to the Centers for Disease Control and Prevention (CDC), Lyme is transmitted to humans through the bite of infected blacklegged ticks.
    • Typical symptoms include fever, headache, fatigue, and a characteristic skin rash called erythema migrans.
    • If left untreated, infection can spread to joints, the heart, and the nervous system.

    Symptoms of Lyme Disease

    Symptoms of Lyme disease depend on the stage of the condition.

    (1) Stage 1

    • The early symptoms of Lyme disease begin to appear within 3 to 30 days after a tick bite.
    • In this stage, the disease has a limited set of symptoms that includes rash, fever, headache, muscle aches etc. and hence is called early localised disease.

    (2) Stage 2

    • Stage 2 is often more serious and widespread. It is called early disseminated disease.
    • Symptoms include more rashes on other parts of the body, neck pain or stiffness, muscle weakness on one or both sides of the face etc.

    (3) Stage 3

    • In the United States, the most common condition of this stage is arthritis in large joints, particularly the knees.
    • Pain, swelling or stiffness may last for a long time. Or the symptoms may come and go.
    • Stage 3 symptoms usually begin 2 to 12 months after a tick bite.

     


    Try this PYQ from CSE Prelims 2016:

    Which of the following statements is/are correct? 

    Viruses can infect

    1. bacteria
    2. fungi
    3. plants

    Select the correct answer using the code given below. 

    (a) 1 and 2 only

    (b) 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

     

    Post your answers here.
  • Monsoon Updates

    Atmospheric Research Testbed in Central India (ART-CI)

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Monsoon Core Zone (MCZ) , Monsoon Trough, ART-CI

    Mains level: NA

    Why in the news-

    • The Ministry of Earth Sciences has commissioned Atmospheric Research Testbed-Central India (ART-CI) near Bhopal.

    About Atmospheric Research Testbed

    • ART-CI stands as an innovative testbed facility, pioneering the exploration of monsoon convection and land-atmosphere interactions, marking a significant advancement in climate research.
    • The Indian Institute of Tropical Meteorology (IITM), Pune leads ART-CI, operating under the Ministry of Earth Sciences (MoES).

    Mission Objectives

    • ART-CI primarily targets the monsoon trough area, encompassing the Monsoon Core Zone (MCZ), a critical component of the regional climate system.
    • Understanding this zone is paramount for precise weather forecasts and accurate climate modelling within India.

    Monsoon Core Zone (MCZ)

     

    • MCZ is a region in India stretching from Gujarat to West Bengal in the east.
    • India Meteorological Department demarcates it as an agricultural region where cropping is mostly rainfed.
    • It is the region within the monsoon trough area that plays a central role in the dynamics of the Indian monsoon system.
    • It is characterized by intense convective activity, significant rainfall, and crucial atmospheric interactions that influence the overall behavior of the monsoon.
    • The MCZ typically experiences a concentration of atmospheric processes that drive the onset, progression, and withdrawal of the monsoon rains across the Indian subcontinent.

    Features and Capabilities

    • ART-CI’s development unfolds incrementally as part of the Atmosphere & Climate Research-Modelling Observing Systems & Services (ACROSS) umbrella scheme.
    • The facility will feature an extensive array of remote-sensing and in-situ instruments.
    • These tools would help monitoring of various atmospheric parameters like convection, cloud cover, precipitation, soil moisture, radiation levels, and microphysics.
  • Air Pollution

    Global Methane Tracker, 2024

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Global Methane Tracker, 2024

    Mains level: NA

    Why in the news-

    • Methane emissions from fuel use in 2023 reached nearly record levels, totalling 120 million tonnes (Mt), as per the International Energy Agency’s (IEA) Global Methane Tracker 2024.

    What is Global Methane Tracker (GMT)?

    • The IEA’s Methane Tracker is an online database that tracks oil and gas-related methane sources globally.
    • It provides estimates of emissions across various sectors, including oil, natural gas, coal, and bioenergy, with the energy sector contributing nearly 40% of human-related methane emissions
    • It provides current estimates of methane emissions and highlights potential reductions achievable through existing technologies.

    GMT 2024: Key Findings 

    • Elevated Emissions: Satellite data revealed a more than 50% increase in large methane emissions in 2023 compared to the previous year.
    • Top Emitters: The United States and Russia emerged as the largest emitters of methane from oil and gas operations, contributing significantly to global emissions.
    • Fossil Fuel Leaks: Over 5 Mt of methane emissions were attributed to major fossil fuel leaks globally, including a significant blowout incident in Kazakhstan lasting over 200 days.
    • Cost of Emission Cut: Reducing methane emissions from fossil fuels by 75% by 2030 would require about $170 billion in spending – less than 5% of the income generated by the fossil fuel industry in 2023.

    About Methane Pollution

    • Methane, is an organic compound composed of carbon and four hydrogen atoms (CH4).
    • Second-biggest anthropogenic contributor to global warming after carbon dioxide, 80 times more potent.
    • Global Warming Potential (GWP) measures warming caused by substances relative to carbon dioxide over a century.
    • Methane GWP100: 28, nitrous oxide 265, sulphur hexafluoride 23,500.
    • Short-lived climate pollutant, breaks down in a few years, unlike carbon dioxide.
    • Sources: Cattle farming, landfills, wastewater treatment, rice cultivation, industrial processes.
    • Energy, agriculture, and waste sectors are primary emitters, responsible for 30% of global warming.
    • Livestock emissions, including manure and gastroenteric releases, account for 32% of human-caused emissions.

    Global steps to curb Methane Emissions 

    • Paris Agreement Goal: To limit warming to 1.5°C, methane emissions from fossil fuels must be reduced by 75% by 2030, necessitating substantial efforts and investments.
    • Global Methane Pledge: Launched at UN COP26 climate conference in Glasgow. Over 90 countries signed, led by the United States and the European Union (India not signed up).
    • First Global Stocktake (GST):  Released at COP28, called for countries to accelerate and substantially reduce non-carbon-dioxide emissions globally, including methane, by 2030. But it stopped short of providing a quantifiable target.

     

    Try this PYQ from CSE Prelims 2016:

    Q.In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index?

    1. Carbon dioxide
    2. Carbon monoxide
    3. Nitrogen dioxide
    4. Sulphur dioxide
    5. Methane

    Select the correct answer using the codes given below:

    (a) 1, 2 and 3 only

    (b) 2, 3 and 4 only

    (c) 1, 4 and 5 only

    (d) 1, 2, 3, 4 and 5

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

    Celebrating Pi Day: A Tribute to Mathematics

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Pi, Sulbha Sutra

    Mains level: NA

    In the news

    • March 14, or 3/14, is celebrated globally as Pi Day, paying homage to the mathematical constant Pi (π).

    About Pi Day

    • Initiated by: Physicist Larry Shaw of the Exploratorium museum in San Francisco started the tradition in 1988, which has since gained international recognition.
    • UNESCO Designation: In 2019, UNESCO designated Pi Day as the International Day of Mathematics, highlighting its significance in promoting mathematical awareness.

    What is Pi?

    • Mathematical Constant: Pi (π) represents the ratio of a circle’s circumference to its diameter, with a value of approximately 3.14.
    • Irrational Number: Pi is an irrational number, with a decimal representation that neither terminates nor repeats.
    • Ancient Approximations: Ancient civilizations, including Babylonians and Egyptians, approximated Pi using geometric methods, laying the foundation for its calculation.
    • Symbol of Beauty: Pi’s infinite and non-repeating decimal digits evoke a sense of wonder and appreciation for the intricacies of mathematics.

    Do you know?

    • Baudhayana (800 BC – 740 BC) is said to be the original Mathematician behind the Pythagoras theorem and Calculation of Pi (3.142).
    •  Pythagoras theorem was indeed known much before Pythagoras, and it was Indians who discovered it at least 1000 years before Pythagoras was born!
    • The credit for authoring the earliest Sulbha Sutras goes to him.
    • Aryabhatta, another great Indian mathematician, worked out the accurate value of π to 3.1416. in 499AD.

     

    Evolution of Pi Calculation

    • Archimedes’ Method: Greek polymath Archimedes devised a method to approximate Pi using inscribed and circumscribed polygons, pioneering early calculations.
    • Newton’s Contribution: Isaac Newton revolutionized Pi calculation using calculus, significantly simplifying the process and enabling rapid advancements.
    • Modern Computing: With the aid of modern computers, mathematicians have calculated Pi to trillions of decimal places, facilitating precise scientific calculations.

    Practical Significance of Pi

    • Architectural and Engineering Applications: Pi plays a crucial role in designing structures, shaping engineering solutions, and facilitating accurate measurements.
    • Understanding the Universe: Pi’s significance extends to diverse fields, from space exploration to molecular biology, underscoring its universal applicability.
    • Intrinsic Value: Despite its vast decimal expansion, Pi holds intrinsic value as a symbol of mathematical beauty and infinity, inspiring exploration and discovery.
  • Uniform Civil Code: Triple Talaq debate, Polygamy issue, etc.

    President approves Uttarakhand’s UCC Bill

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Governor's Legislative Powers

    Mains level: NA

    In the news

    • Under Article 201 of the Indian Constitution, the President gave assent to the ‘Uniform Civil Code Uttarakhand 2024’ Bill passed by the Uttarakhand Legislative Assembly, on March 11 2024.

    What is the Uniform Civil Code?

    • The UCC is mentioned in Article 44 of the Constitution as part of the Directive Principles of State Policy, that the state should work to establish a uniform civil code for all citizens across India.
      • However, the Constitution’s framers left it to the government’s discretion to implement the UCC.
    • Goa is the only state in India with a UCC, following the Portuguese Civil Code of 1867.

    What are the SC Observations?

    • The Supreme Court has emphasized the importance of Governors promptly acting on Bills sent to them for assent after passage by Legislative Assemblies.
    • Bills should be returned “as soon as possible” to prevent undue delay, with significant constitutional intent behind this directive.

    Governor’s Power over State Bills

     

    [I] Article 200:

    • Article 200 delineates the process for State Legislative Assembly-passed Bills to be presented to the Governor for assent.
    • The Governor holds the authority to either assent, withhold assent, or reserve the Bill for consideration by the President.
    • Additionally, the Governor possesses the prerogative to return the Bill to the House or Houses with a message requesting reconsideration.

     

    [II] Article 201:

    • Article 201 stipulates the procedures concerning Bills reserved for the President’s consideration.
    • It allows the President to either assent to or withhold assent from the Bill.
    • If necessary, the President can direct the Governor to return the Bill to the State Legislature for reconsideration.

     

    Governor’s Discretion 

    The Governor holds several options upon receiving a Bill:

    • Granting Assent.
    • Requesting the Assembly to reconsider specific provisions or the entire Bill.
    • Obligatory reservation for the President’s consideration, especially in cases posing a threat to the state high court or contravening constitutional provisions, DPSP, national interest, or Article 31A regarding compulsory property acquisition.
    • Although within the Governor’s authority, withholding assent is seldom practiced due to its contentious nature.

    Committee Recommendations:

     

    (1) Sarkaria Commission (1987):

    • It recommended that Governors exercise discretion in reserving Bills for Presidential consideration only in rare cases of unconstitutionality.
    • Bills should otherwise be processed as per ministerial advice, with a maximum six-month period for Presidential disposition.

     

    (2) Punchhi Commission (2010):

    • It proposed a six-month timeframe for Governors to decide on Bills presented for assent, emphasizing timely decision-making.

    Try this PYQ from CSE Prelims 2016:

    Q.Consider the following statements:

    1. The Chief Secretary in a State is appointed by the Governor of that State.
    2. The Chief Secretary in a State has a fixed tenure.

    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