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  • Indian Telecom Services Performance Indicator Report (Jan-Mar 2026)

    Why in News?

    TRAI released the Indian Telecom Services Performance Indicator Report for the quarter ending 31 March 2026, highlighting growth in telecom, internet, broadband, DTH, and broadcasting sectors.

    Telecom

    • Total telephone subscribers: 1,330.58 million (↑1.87% QoQ).
    • Tele-density:93.26%: Urban: 151.47% and Rural: 60.46%
    • Private operators’ market share: 92.32%.

    Internet & Broadband

    • Internet subscribers: 1,092.79 million (↑6.24% QoQ).
    • Broadband subscribers: 1,065.88 million.
    • Wireless internet: 1,046.26 million.
    • Wired internet: 46.54 million.
    • Internet penetration: 76.59 per 100 population.

    Wireless Services

    • Wireless (Mobile + FWA) subscribers: 1,282.33 million.
    • Wireless (Mobile) subscribers: 1,265.73 million.
    • 5G FWA subscribers: 16.61 million.
    • Average wireless data usage: 26.70 GB/subscriber/month.

    Revenue & Usage

    • Monthly Wireless ARPU: ₹196.04.
    • Minutes of Usage (MOU): 1,017 minutes/subscriber/month.
    • Adjusted Gross Revenue (AGR): ₹86,716 crore.

    Broadcasting

    • Private satellite TV channels: 917
    • Pay TV channels: 342
    • Private FM channels: 390 across 120 cities
    • Pay DTH subscribers: 49.05 million
    • Community Radio Stations: 564.

    Prelims Pointer

    • TRAI is a statutory body established under the Telecom Regulatory Authority of India Act, 1997.
    • It regulates telecom services, ensures consumer protection, promotes competition, and recommends licensing and spectrum policies.
    • Tele-density = Number of telephone connections per 100 population.

    [2019] With reference to communications technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?
    1. LTE is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G.
    2. LTE is data-only technology and VoLTE is voice-only technology.
    Select the correct answer using the code given below.

    [A] 1 only

    [B] 2 only

    [C] Both 1 and 2

    [D] Neither 1 nor 2

  • India’s Emerging Technology Ecosystem

    Why in the news?

    The Government highlighted India’s progress in AI, semiconductors, quantum technologies, supercomputing, cloud computing, blockchain, and biotechnology as key pillars of Viksit Bharat 2047.

    Digital India

    • Internet connections: 25.15 crore (2014) → 102.86 crore (2026).
    • Broadband: 6.1 crore → 99.56 crore.
    • 5G services cover 99.9% of districts.
    • Data cost reduced from ₹269/GB to ₹8-10/GB.

    Supercomputing

    • National Supercomputing Mission (2015): ₹4,500 crore.
    • 38 supercomputers with 47 petaflops capacity.
    • Indigenous PARAM Rudra series developed.

    Semiconductor Ecosystem

    • Semicon India Programme (2021): ₹76,000 crore.
    • ISM 2.0 (2026-27): ₹1,000 crore.
    • 12 projects worth ₹1.64 lakh crore approved.
    • DLI Scheme: 24 companies supported; 7 chips fabricated.

    National Quantum Mission

    • Approved in 2023 with ₹6,003.65 crore.
    • Focus: Quantum Computing, Communication, Sensing, Materials.
    • 1,000 km secure quantum communication network demonstrated.
    • India’s first Quantum Valley coming up in Amaravati.

    IndiaAI Mission

    • Approved in 2024 with ₹10,300+ crore.
    • 38,000+ GPUs common computing facility.
    • AI Kosh: 12,115 datasets and 306 AI models.
    • Around 89% of new startups use AI.

    Cloud Computing

    • MeghRaj: Government cloud platform.
    • 2,323 government departments using MeghRaj (2026).

    Blockchain

    • National Blockchain Framework (2021).
    • 3 crore+ property documents verified through blockchain.
    • Supports Vishvasya Blockchain Stack and Digital Rupee (e₹) pilots.

    Biotechnology

    • Sector size: USD 190 billion (2026).
    • 94 BioNEST incubators across 25 States/UTs.
    • Key initiatives: National Biopharma Mission, BioE3 Policy.

    Research & Skilling

    • ANRF (2024) operationalized.
    • RDI Scheme (2025): ₹1 lakh crore corpus.
    • FutureSkills PRIME: 27.53 lakh registrations.
    • Chips to Startup (C2S): Targets 85,000 semiconductor professionals.

    Global Technology Indicators

    • Global Innovation Index: Rank 81 (2015) → 38 (2025).
    • 2,100+ Global Capability Centres (GCCs) employing 2.36 million professionals.
    • India AI Impact Summit 2026: Declaration adopted by 92 countries.

    [2022] Which one of the following is the context in which the term “qubit” is mentioned?

    [A] Cloud Services

    [B] Quantum Computing

    [C] Visible Light Communication Technologies

    [D] Wireless Communication Technologies

  • DAE Inaugurates VDPP and 24 kA Prototype Sodium Cell

    Why in News?

    The Department of Atomic Energy (DAE) inaugurated the Versatile Deuterated Compounds Production Plant (VDPP) and commissioned the 24 kA Prototype Sodium Cell at the Heavy Water Board Facilities (HWBF), Vadodara, strengthening India’s indigenous capabilities in strategic nuclear materials.

    Versatile Deuterated Compounds Production Plant (VDPP)

    • Established for indigenous production of high-purity deuterated compounds and solvents.
    • Supports:
      • Advanced scientific research
      • Strategic applications
      • Frontier technologies
    • Reduces dependence on imports of specialized deuterated materials.

    What are Deuterated Compounds?

    • Compounds in which hydrogen (¹H) is replaced by deuterium (²H or D), a stable isotope of hydrogen containing one proton and one neutron.
    • Used in Nuclear technology, NMR spectroscopy, Pharmaceutical research, and Chemical and biological studies

    24 kA Prototype Sodium Cell

    • India’s first indigenous industrial-scale prototype for producing nuclear-grade sodium.
    • Nuclear-grade sodium serves as the coolant in Fast Breeder Reactors (FBRs).
    • Represents a major step toward self-reliance in strategic nuclear materials.

    Significance

    • Strengthens India’s Fast Breeder Reactor Programme.
    • Supports the second stage of India’s three-stage nuclear power programme.
    • Promotes AtmaNirbhar Bharat in critical nuclear technologies.
    • Enhances long-term energy security and technological self-reliance.

  • India’s Space Odyssey: Prelims Quick Revision

    Why in News?

    The Government highlighted India’s achievements under Space Vision 2047, focusing on self-reliance, commercialization, and human spaceflight.

    Major Missions

    • Chandrayaan-3 (2023): First soft landing near Moon’s south pole; confirmed sulphur.
    • Chandrayaan-4 (2027): Lunar sample return mission.
    • LUPEX (2027-28): ISRO-JAXA mission to explore lunar polar ice.
    • Mangalyaan: First country to reach Mars on maiden attempt.
    • Aditya-L1: India’s first solar observatory at Sun-Earth L1.
    • Venus Orbiter Mission: Planned for 2028.
    • Gaganyaan: India’s first human spaceflight programme.
    • Bharatiya Antariksh Station (BAS): First module by 2028.

    Space Technology

    • SpaDeX (2025): India became 4th nation to achieve autonomous space docking.
    • NavIC: Indigenous navigation system covering India and 1,500 km beyond.
    • VIKRAM3201: First indigenous 32-bit space microprocessor.
    • RLV-TD: Developing reusable launch vehicle technology.

    Space Economy

    • Space startups: 1 (2014) → 400+ (2026).
    • Space economy: $8 billion, targeted to reach $40-45 billion by 2030.
    • Major reforms: IN-SPACe, NSIL, Indian Space Policy 2023, Liberalised FDI.

    Launch Infrastructure

    • Operational launch vehicles: PSLV, GSLV, LVM3.
    • NGLV under development (30-ton LEO capacity).
    • Second spaceport: Kulasekarapattinam, Tamil Nadu.
    • Third launch pad approved at Sriharikota.

    International Cooperation

    • NISAR: ISRO-NASA
    • TRISHNA: ISRO-CNES
    • LUPEX: ISRO-JAXA
    • Human spaceflight cooperation with ESA and Russia.

    Space Applications

    • Disaster management, Telemedicine, PM e-VIDYA, India-WRIS, Potential Fishing Zone advisories, and Satellite Aided Search and Rescue (SASAR).

  • Fast X-ray Transients (FXTs)

    Why in the news?

    Astronomers from the Indian Institute of Astrophysics have traced the likely origin of a rare Fast X-ray Transient (FXT) event, EP241107a, detected by the Einstein Probe in November 2024.

    Key Findings

    • FXTs are energetic, non-repeating flashes of X-rays lasting from a few minutes to several hours.
    • They are a recently discovered class of transient cosmic events whose origin has remained uncertain.
    • Researchers identified a radio counterpart of FXT EP241107a using the Karl G. Jansky Very Large Array.
    • Follow-up observations were conducted using:
      • Himalayan Chandra Telescope
      • GROWTH India Telescope
      • Upgraded Giant Metrewave Radio Telescope

    Likely Origin

    • The event was probably caused by: Collapse of a massive star leading to a supernova and gamma-ray burst (GRB), or Merger of two neutron stars.
    • Researchers concluded that EP241107a is most likely an “orphan afterglow”:
      • A gamma-ray-burst-like explosion whose gamma rays were not directly detected.
      • Represents a lower-energy member of the GRB population.

    Fast X-ray Transients (FXTs)

    • Sudden flashes of low-energy X-rays.
    • Non-repeating and short-lived.
    • Fade rapidly after detection.
    • Associated with highly energetic cosmic explosions.

    Proposed Sources

    • Core-collapse supernovae.
    • Binary neutron star mergers.
    • Magnetars (highly magnetized neutron stars).
    • Tidal disruption events involving white dwarfs and black holes.
    • Gamma-ray bursts (GRBs).

    Gamma-Ray Bursts (GRBs)

    • Most energetic explosions known in the Universe.
    • Emit intense gamma radiation for a few milliseconds to several minutes.
    • Associated with the collapse of massive stars (Long GRBs) and Neutron star mergers (Short GRBs).
    • Followed by multi-wavelength “afterglows” in X-ray, optical, and radio bands.

    Neutron Star

    • Extremely dense remnant of a massive star after a supernova.
    • Mass ≈ 1.4-2 solar masses compressed into a sphere about 20 km across.
    • Composed mainly of neutrons.

    [2023] Consider the following pairs: Objects in space : Description
    1. Cepheids : Giant clouds of dust and gas in space
    2. Nebulae : Stars which brighten and dim periodically
    3. Pulsars : Neutron stars that are formed when massive stars run out of fuel and collapse
    How many of the above pairs are correctly matched ?

    [A] Only one

    [B] Only two

    [C] All three

    [D] None

  • India’s First Commercial-Scale Coal-to-Ammonium Nitrate Project

    Why in the news?

    The Prime Minister will lay the foundation stone of India’s first commercial-scale Coal-to-Ammonium Nitrate Project at Lakhanpur, Jharsuguda district, Odisha. The project, worth ₹25,016 crore, is a major step towards energy security, import substitution, and industrial self-reliance.

    Coal Gasification

    • A process that converts coal into Synthesis Gas (Syngas), mainly consisting of carbon monoxide (CO) and hydrogen (H₂).
    • Syngas can be used to produce Methanol, Urea, Ammonia, Ammonium Nitrate, Synthetic Natural Gas (SNG), Other chemical feedstocks

    Lakhanpur Project

    • India’s first commercial-scale Coal-to-Ammonium Nitrate facility.
    • Developed by Bharat Coal Gasification and Chemicals Limited, a joint venture of Bharat Heavy Electricals Limited and Coal India Limited.
    • Located on about 350 acres under Mahanadi Coalfields Limited land.
    • Capacity: 2,000 tonnes/day of Ammonium Nitrate.
    • Uses indigenous coal gasification technology developed by BHEL.
    • Receives ₹1,350 crore support under the Coal Ministry’s incentive scheme.

    Significance

    • Reduces dependence on imported natural gas, ammonia, methanol, and chemicals.
    • Supports Aatmanirbhar Bharat and domestic manufacturing.
    • Enhances value addition to India’s vast coal reserves (>400 billion tonnes).
    • Expected to boost downstream chemical and fertilizer industries.

    [2025] Consider the following substances:
    I. Ethanol
    II. Nitroglycerine
    III. Urea
    Coal gasification technology can be used in the production of how many of them?

    [A] Only one

    [B] Only two

    [C] All the three

    [D] None

  • International Sickle Cell Day 2026

    Why in the news?

    The President of India, Droupadi Murmu, commemorated International Sickle Cell Day at Omkareshwar and highlighted the achievements of the National Sickle Cell Anaemia Elimination Mission (NSCAEM).

    National Sickle Cell Anaemia Elimination Mission (2023)

    • Launched to eliminate Sickle Cell Disease (SCD) as a public health problem by 2047.
    • Targets screening of 7 crore people (0-40 years age group) in affected tribal and high-prevalence areas.
    • One of the world’s largest genetic disease screening programmes.
    • So far: Around 2.5 lakh patients identified. Over 20 lakh carriers detected.

    Sickle Cell Disease (SCD)

    • A hereditary genetic blood disorder caused by mutation in the haemoglobin gene.
    • Red blood cells become sickle-shaped, reducing oxygen supply.
    • Leads to anaemia, pain episodes, infections, organ damage, and reduced life expectancy.
    • Inherited in an autosomal recessive pattern.

    High-Risk Areas in India

    • Predominantly affects tribal populations across Madhya Pradesh, Maharashtra, Chhattisgarh, Odisha, Gujarat, Jharkhand, and Rajasthan

    Madhya Pradesh Initiatives

    • Sickle Mitra Initiative: Trains volunteers, NCC cadets, and civil society members for awareness and patient support.
    • Swasth Nari, Sashakt Parivar Abhiyan (2025): Screened over 4 lakh women for SCD.

    [2023] Consider the following statements in the context of interventions being undertaken under Anaemia Mukt Bharat Strategy:
    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?

    [A] Only one

    [B] Only two

    [C] Only three

    [D] All four

  • Advancing Electrolyte Engineering for Durable and Affordable Aqueous Batteries

    Why in the news?

    Scientists at the Institute of Nano Science and Technology (INST), Mohali, under the Department of Science and Technology (DST), have developed a novel electrolyte additive (BDIM) that significantly improves the performance and lifespan of Aqueous Zinc-Ion Batteries (AZIBs).

    Key Highlights

    • AZIBs are emerging as safer, cheaper, and more sustainable alternatives to lithium-ion batteries.
    • Major challenges:
      • Zinc dendrite formation
      • Hydrogen Evolution Reaction (HER)
      • Corrosion of zinc anode
      • Poor cycling stability
    • Researchers developed BDIM (1,3-bis(1,3-dicarboxypropyl)-1H-imidazole-3-ium chloride) as an electrolyte additive.
    • BDIM selectively adsorbs on the zinc surface and occupies the Inner Helmholtz Plane (IHP).
    • It displaces water molecules, thereby:
      • Suppressing hydrogen evolution
      • Reducing corrosion
      • Preventing dendrite growth
      • Enhancing battery life and safety
    • Researchers used: Ultramicroelectrode (UME) and Fast-Scan Cyclic Voltammetry (FSCV)
      to study zinc deposition mechanisms.

    Significance

    • Extends battery lifespan without costly material redesign.
    • Improves safety and reliability of rechargeable batteries.
    • Supports large-scale renewable energy and grid-storage applications.
    • Can reduce maintenance costs of energy-storage infrastructure.

    Prelims Facts

    • AZIB Electrolyte: Water-based, making it non-flammable and safer than lithium-ion batteries.
    • Inner Helmholtz Plane (IHP): Region near the electrode surface where electrochemical reactions occur.
    • Hydrogen Evolution Reaction (HER): Undesirable side reaction that reduces battery efficiency.

  • Qadian-Beas Railway Line Project Revived

    Why in the news?

    The Government of India has revived the Qadian-Beas New Railway Line Project in Punjab after nearly a century. The project was originally approved during 1928-29 by the North-Western Railway but remained incomplete.

    Key Highlights

    • Length: 39.68 km broad-gauge railway line.
    • Cost: Approximately ₹1,400 crore.
    • Implementing Agency: Northern Railway.
    • Route: Qadian (Gurdaspur) – Dhapai – Ghuman – Butala – Sathiala – Beas (Amritsar).
    • Revived under the Socially Desirable Rail Connectivity Programme.

    Infrastructure Features

    • 2 crossing stations (Ghuman and Butala).
    • 11 major bridges and 121 minor bridges.
    • 54 Road Under Bridges (RUBs).
    • Modern signalling and telecommunication systems.
    • Deployment of Kavach, India’s indigenous train collision avoidance system.

    Significance

    • Connectivity: Brings several areas of Punjab’s Majha region onto the railway network. Improves mobility and accessibility for residents.
    • Strategic Importance: Provides an alternative corridor to the Amritsar-Pathankot railway section during emergencies. Enhances resilience of railway operations in northern India.
    • Economic Benefits
      • Better market access for farmers.
      • Faster transportation of agricultural produce.
      • Boost to trade, commerce, and small-scale industries.
      • Employment generation during construction and operation.
    • Tourism: Improves access to major religious destinations including Qadian, Dera Baba Jaimal Singh, Sri Darbar Sahib, Dera Baba Nanak, and Gurdwara Achal Sahib

  • Indigenous Air Cushion Vehicle (ACV) Inducted into Indian Coast Guard

    Why in News?

    The Indian Coast Guard (ICG) inducted the first of six indigenously built Air Cushion Vehicles (ACVs), or hovercraft, at Goa on 18 June 2026. The vessels are being constructed by Chowgule & Company Private Limited under a Ministry of Defence contract.

    Key Highlights

    • First ACV inducted into ICG service in Goa.
    • Part of a contract for six indigenous hovercraft.
    • Contract signed between the Ministry of Defence and Chowgule & Company Pvt. Ltd. on 24 October 2024.
    • Supports the vision of Aatmanirbhar Bharat.
    • Enhances India’s indigenous maritime manufacturing capability.

    What is an Air Cushion Vehicle (ACV)?

    • A hovercraft that travels on a cushion of pressurised air.
    • Can operate over Water, Mudflats, Marshes, Sandbanks, Shallow and coastal areas
    • Combines features of both marine vessels and aircraft.