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Subject: Science and Technology

  • Annatto

    Why in the news?

    • As informed by the Council of Scientific and Industrial Research (CSIR), the CSIR–Central Food Technological Research Institute (CFTRI), Mysuru has undertaken four Grant-in-Aid projects related to the study and development of annatto.

    What is Annatto?

    • Annatto is a natural food colouring and flavouring agent.
    • Obtained from the seeds of the achiote tree (Bixa orellana).

    Origin & Botanical Facts

    • Scientific name: Bixa orellana
    • Native region: Tropical regions of the Americas
    • Plant type: Shrub/small tree
    • Usable part: Seed coating

    Key Chemical Constituents

    • Contains carotenoids (plant pigments)
      • Responsible for yellow-orange colour
    • Rich in:
      • Antioxidants
      • Tocotrienols (a form of Vitamin E)
      • Antimicrobial compounds

    Uses of Annatto

    Food Industry

    • Accounts for ~70% of natural food colours used globally
    With reference to ‘palm oil,’ consider the following statements: (2021)

    1. The palm oil tree is native to Southeast Asia. 

    2. Palm oil is a raw material for some industries producing lipstick and perfumes. 

    3. Palm oil can be used to produce biodiesel. 

    Which of the statements given above are correct? 

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

  • Kavach System – Automatic Train Protection (ATP)

    Why in the News?

    • The Union Railway Minister informed the Lok Sabha during the Winter Session of Parliament that the indigenously developed Kavach system has been fully commissioned on over 2,000 km of the Indian Rail network.
    • The rollout is progressing at a very fast pace across multiple railway zones.

    What is Kavach?

    • Kavach is an indigenous Automatic Train Protection (ATP) system.
    • It is designed to prevent train collisions, over-speeding, and signal passing at danger (SPAD).
    • It enhances operational safety through real-time monitoring and automatic intervention.

    Development and Agencies Involved

    • Developed by:
      • Research Design and Standards Organisation (RDSO) under Indian Railways
    • Industry partners:
      • Medha Servo Drives Pvt. Ltd.
      • HBL Power Systems Ltd.
      • Kernex Microsystems

    Current Status (as of December 2025)

    • 7,129 km of Optical Fibre Cable laid
    • 860 telecom towers installed
    • 767 railway stations connected to data centres
    • Trackside equipment deployed along 3,413 km
    • 4,154 locomotives equipped with Kavach
    • Around 40,000 technicians and operators trained

    Impact

    • Consequential railway accidents reduced by nearly 90%
    • Accidents declined from 135 (2014) to about 11 currently
    • Demonstrates tangible improvement in railway safety outcomes
    Consider the following statements: (2025)

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

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

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

    Which of the statements given above are not correct?

    (a) I and II only 

    (b) II and III only 

    (c) I and III only 

    (d) I, II and III

  • DHRUV64 Microprocessor

    Why in the News?

    India has unveiled DHRUV64, its first fully indigenously developed microprocessor, marking a major milestone in semiconductor self reliance and Atmanirbhar Bharat.

    About DHRUV64

    • Fully indigenous microprocessor developed in India
     • Developed by the Centre for Development of Advanced Computing (C DAC)
     • Part of the Microprocessor Development Programme (MDP)

    Key Technical Features

    • 64 bit dual core processor
     • Clock speed of 1.0 GHz ( Very low compared to recent chips like Snapdragan clock speed more 4.0 GHz)
    • Uses superscalar execution allowing multiple instructions simultaneously
     • Supports out of order execution for improved performance
     • Integrated communication and control functions
     • Uses FCBGA packaging, enabling compact and system ready design

    Potential Applications

    • Strategic applications and commercial computing
     • 5G infrastructure
     • Automotive electronics
     • Consumer electronics
     • Industrial automation
     • Internet of Things (IoT) systems

    Significance for India

    • Reduces dependence on foreign microprocessors
     • Strengthens domestic semiconductor ecosystem
     • Enables startups, academia and industry to design and test indigenous systems
     • Supports low cost prototype development for new system architectures
     • Enhances technological sovereignty and national security

    When the alarm of your smart-phone rings… which one of the following terms best applies to the above scenario? (2018)

    (a) Border Gateway Protocol 

    (b) Internet of Things 

    (c) Internet Protocol 

    (d) Virtual Private Network

  • Ekam AI and Project SAMBHAV

    Why in the News?

    During Vijay Diwas celebrations, the Indian Army showcased indigenous defence technologies including Ekam AI and Project SAMBHAV, highlighting progress in defence indigenisation and secure digital capabilities.

    About Ekam AI

    • Fully indigenous and secure Artificial Intelligence platform
     • Designed for sensitive and classified environments
     • No dependence on foreign software or external cloud systems

    Key Features of Ekam AI

    • Data analysis, document management and decision support
     • User friendly AI accessible across all personnel levels
     • No requirement of specialised technical expertise
     • Ensures data security and digital sovereignty

    Significance of Ekam AI

    • Strengthens national data sovereignty
     • Reduces strategic dependence on foreign AI platforms
     • Builds trusted national digital infrastructure

    About Project SAMBHAV

    • Portable satellite based communication system
     • Developed by the Indian Army
     • Provides mobile connectivity in remote, border and disaster affected areas

    Key Features of Project SAMBHAV

    • Rapid deployment capability
     • Functions in network denied areas
     • Supports military operations and civilian disaster response

    Significance of Project SAMBHAV

    • Enhances communication resilience
     • Strengthens national disaster management infrastructure
     • Demonstrates dual use defence technology

    What is Vijay Diwas

    • Observed annually on 16 December
     • Commemorates India’s victory in the 1971 India Pakistan War
     • Led to the liberation of Bangladesh

    Consider the following statements: (2023)

    1. Ballistic missiles are jet-propelled at sub-sonic speeds throughout their fights, while cruise missiles are rocket-powered only in the initial phase of flight. 

    2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fu-elled intercontinental ballistic missile. 

    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

  • Gestational Diabetes Mellitus (GDM) 

    Why in the News?

    • A large multi-city study highlights the high prevalence of early GDM in Indian women
     • Early GDM linked with higher future diabetes risk

    What is GDM?

    • Gestational Diabetes Mellitus is glucose intolerance first diagnosed during pregnancy
     • Affects about 14 percent of pregnancies worldwide

    Types of GDM

    • Early GDM (EGDM): Diagnosed before 20 weeks of pregnancy
     • Late GDM (LGDM): Diagnosed between 24 to 28 weeks

    STRiDE Study

    • Conducted at 7 antenatal clinics
     • Sample size: over 3000 pregnant women
     • Locations: Chennai, Hyderabad, Puducherry
     • Published in Diabetes Research and Clinical Practice

    Key Findings

    • Early GDM prevalence: 21.5 percent
     • Late GDM prevalence: 19.5 percent
     • Early GDM affects about 1 in 5 pregnant women

    A company marketing food product advertises that its items do not contain trans-fats. What does this campaign signify to the customers? (2011)

    1. The food products are not made out of hydrogenated oils. 

    2. The food products are not made out of animal fats/oils. 

    3. The oils used are not likely to damage the cardiovascular health of the consumers. 

    Select the correct answer using the code given below: 

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

  • BlueBird 6 Satellite and LVM 3

    Why in the News?

    The Indian Space Research Organisation ISRO is scheduled to launch the BlueBird 6 satellite, developed by US based AST SpaceMobile, on 21 December 2025 using India’s heavy lift rocket LVM 3.

    About BlueBird 6 Satellite

    • Developer: AST SpaceMobile USA
     • Purpose: Provides direct to device internet connectivity, enabling normal mobile phones to access broadband without dependence on ground based cell towers
     • Weight: Around 6.5 tonnes, making it among the heaviest commercial satellites launched by ISRO
     • Orbit: Low Earth Orbit LEO
     • Technology: Equipped with one of the largest phased array antennas ever deployed in space, covering nearly 2,400 square feet
     • Capable of direct communication with standard smartphones
     • Significance: Enhances global mobile broadband connectivity, particularly in remote and rural regions
     • Strategic importance: Strengthens Indo US space cooperation and expands commercial space launch collaboration
     • Future impact: Helps bridge the digital divide by providing internet access in regions without cellular infrastructure

    About LVM 3

    • Full name: Launch Vehicle Mark 3
     • Also called GSLV Mk III or Bahubali
     • India’s heavy lift launch vehicle developed by ISRO
     • Designed for large satellite launches and human spaceflight missions

    With reference to India’s satellite launch vehicles, Consider the following statements: (2018)

    1. PSLVs launch the satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites. 

    2. Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth. 

    3. GSLV Mk III is a four-stage launch vehicle with the first and third stages using solid rocket motors, and the second and fourth stages using liquid rocket engines. 

    Which of the statements given above is/ are correct? 

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

  • Pyrite

    Why in the News?

    Scientists have discovered the oldest known evidence of fire making by prehistoric humans in England. The findings include heated clay, heat shattered flint handaxes and pieces of iron pyrite, which can generate sparks when struck against flint.

    About Pyrite

    • Pyrite is a brass yellow mineral with a bright metallic lustre.
       • Chemical composition: Iron sulfide (FeS₂).
       • It is the most common sulfide mineral found on Earth.
       • The name is derived from the Greek word pyr meaning fire, as pyrite emits sparks when struck by metal or flint.
       • Nodules of pyrite found in prehistoric burial mounds suggest its early use in fire making.
       • Commonly known as “Fool’s Gold” due to its superficial resemblance to gold.

    Distinguishing Pyrite from Gold

    • Pyrite is much lighter than gold.
       • It is harder than gold and cannot be scratched with a fingernail or a pocket knife.
       • Gold is soft, malleable and can be easily scratched.

    Occurrence

    • Found worldwide in diverse geological settings.
       • Occurs in sedimentary deposits, hydrothermal veins and as a constituent of metamorphic rocks.

    Uses of Pyrite

    • Source of iron and sulfur.
       • Used in the manufacture of sulfuric acid.
       • Used to produce iron sulfate.
       • Iron sulfate applications include nutritional supplements, ink, lawn conditioner, water treatment and flocculation, and moss control.
       • Iron sulfate derived from pyrite is used in the treatment of iron deficiency anemia.
       • Some varieties contain microscopic gold and can be mined as a gold ore.

    Prelims Pointer

    • Pyrite’s ability to produce sparks made it an important material for early human fire technology.
    Ilmenite and rutile, abundantly available in certain coastal tracts of India, are rich sources of which one of the following? (2023)

    (a) Aluminium 

    (b) Copper 

    (c) Iron 

    (d) Titanium

  • Agentic AI  

    Why in the News?

    Microsoft Chairman and CEO Satya Nadella recently noted that India is witnessing strong momentum in the adoption and deployment of artificial intelligence, particularly agentic AI applications.

    About Agentic AI

    Agentic AI is an advanced form of artificial intelligence that emphasises autonomous decision-making and action. It is designed to act independently in a goal driven manner with minimal human intervention.

    Core Concept

    • Based on AI agents that simulate human-like decision making
     • Capable of setting goals, planning steps, and executing tasks on its own
     • Goes beyond traditional AI systems that mainly respond to prompts or analyse data

    Prelims Pointers

    • Agentic AI emphasizes autonomy and goal orientation
    • Uses large language models as its reasoning engine
    • Key stages include perception, reasoning, planning, action, and reflection
    • Represents an evolution beyond prompt based AI systems
    With the present state of development, Artificial Intelligence can effectively do which of the following? (2020)

    (1) Bring down electricity consumption in industrial units

    (2) Create meaningful short stories and songs

    (3) Disease diagnosis

    (4) Text-to-Speech Conversion

    (5) Wireless transmission of electrical energy

    Select the correct answer using the code given below:

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

  • Diving Support Craft A20

    Why in the news?

    The Indian Navy is set to commission Diving Support Craft (DSC) A20 at Kochi under the Southern Naval Command, marking a key milestone in indigenous naval capability.

    About Diving Support Craft A20

    • First vessel of the indigenously designed and constructed Diving Support Craft class
     • Lead ship in a series of five DSCs
     • Built by M s Titagarh Rail Systems Limited, Kolkata
     • Designed for a wide range of diving and underwater missions in coastal waters

    Prelims Pointers

    • DSC A20 is an indigenously built naval auxiliary vessel
    • Builder: Titagarh Rail Systems Limited
    • Hull type: Catamaran
    • Command: Southern Naval Command
    • Focus areas include diving operations, underwater missions, and salvage support
    Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently? (2016)

    (a) Amphibious warfare ship 

    (b) Nuclear-powered submarine 

    (c) Torpedo launch and recovery vessel 

    (d) Nuclear-powered aircraft carrier

  • NSIL and ISRO Technology Transfer 

    Why in the News?

    NewSpace India Limited (NSIL) has so far signed 70 Technology Transfer Agreements (TTAs) to license technologies developed by ISRO to Indian industries.

    About NSIL

    • Commercial arm of the Department of Space (DoS), incorporated under the Companies Act 2013.
    • Mandated to:
      • Commercialise ISRO technologies.
      • Enable industry participation in space missions.
      • Act as the actual licensor of ISRO technologies.

    Technology Transfer Mechanism

    Types of Agreements

    1. Technology Transfer Agreements (TTAs) – Define rights, obligations, and usage of transferred technology.
    2. Non-Disclosure Agreements (NDAs) – Contain explicit confidentiality clauses protecting commercially sensitive information.

    Role of IN-SPACe

    • Acts as a facilitator for Non-Governmental Entities (NGEs).
    • NSIL remains the licensing authority.

    Oversight for Fairness

    • A dedicated Technology Transfer Committee reviews all proposals.
    • Ensures transfers are transparent, equitable, and accountable.

    Transparency and RTI Compliance

    • NSIL is a public authority under RTI Act, 2005.
    • Suo motu disclosure under Section 4:
      • Lists technologies available for transfer.
      • Guidelines and procedures for NGEs.
      • Periodically updated information on technology transfers.

    What Information is Public?

    • Names and details of industries receiving ISRO technologies
       (furnished under RTI and available via ISRO/DoS websites such as URSC, IN-SPACe, NSIL).
    • Media publications also highlight certain transfers.

    Information Exempt from Disclosure

    Under Section 8(1)(d) of the RTI Act, NSIL does not disclose:

    • Commercial terms.
    • Payment details.
    • Copies of agreements.
       These are considered commercially sensitive or strategic.
    With reference to the Indian Regional Navigation Satellite System (IRNSS), Consider the following statements : (2018)

    1. IRNSS has three satellites in geostationary and four satellites in geosynchronous orbits. 

    2. IRNSS covers entire India and about 5500 sq. km beyond its borders. 

    3. India will have its own satellite navigation system with full global coverage by the middle of 2019. 

    Which of the statements given above is/are correct ? 

    (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) None