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Type: Prelims Only

  • DRDO Successfully Tests Pinaka Long Range Guided Rocket

    Why in News?

    The Defence Research and Development Organisation (DRDO) successfully conducted a flight test of the Pinaka Long Range Guided Rocket (LRGR) from the Integrated Test Range (ITR), Chandipur, Odisha. The test validated its user defined minimum strike range of 60 km and demonstrated high precision strike capability.

    Key Highlights

    • Successfully validated the minimum strike range of 60 km.
    • The rocket executed all planned in flight manoeuvres and accurately hit the designated target.
    • It followed the predicted trajectory with high precision.
    • Launched from an in service Pinaka launcher, demonstrating compatibility with multiple Pinaka rocket variants.
    • This enhances operational flexibility for the Indian Army.

    Development

    • Designed by the Armament Research and Development Establishment (ARDE), Pune.
    • Developed in collaboration with the High Energy Materials Research Laboratory (HEMRL), Pune.
    • Supported by the Defence Research and Development Laboratory (DRDL), Hyderabad and Research Centre Imarat (RCI), Hyderabad.
    • Flight trial coordinated by the Integrated Test Range (ITR) and Proof and Experimental Establishment (PXE), Chandipur.

    About Pinaka Rocket System

    • Pinaka is an indigenously developed Multi Barrel Rocket Launcher (MBRL).
    • Developed by DRDO for the Indian Army.
    • Named after Lord Shiva’s bow, Pinaka.
    • Provides rapid, high volume artillery fire against enemy positions.
    • Mounted on a high mobility vehicle.
    • Can fire 12 rockets in about 44 seconds.
    • Suitable for: Area suppression, Counter battery fire, Destruction of troop concentrations, and Neutralising enemy logistics and command centres

    Pinaka Variants

    • Pinaka Mk I: Range of about 37 to 40 km.
    • Guided Pinaka: Precision guided rocket with a range of about 75 km.
    • Pinaka Enhanced Range (ER): Range of about 90 km.
    • Pinaka Long Range Guided Rocket (LRGR): Maximum range of about 120 km, while the latest test validated a user defined strike range of 60 km.

    [2023] Consider the following statements
    1. Ballistic missiles are jet-propelled at subsonic speeds throughout their fights, while cruise missiles are rocket-powered only in the initial phase of fight.
    2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled 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

  • Mission Drishti Loses Communication After Solar Storm

    Why in News?

    Mission Drishti, developed by Bengaluru based GalaxEye, lost communication after a geomagnetic solar storm affected the satellite during the Launch and Early Orbit Phase (LEOP).

    Key Highlights

    • Launched on 3 May 2026 aboard SpaceX Falcon 9 from Vandenberg, California.
    • World’s first OptoSAR satellite, combining optical imaging and Synthetic Aperture Radar (SAR).
    • India’s largest privately developed Earth observation satellite.
    • Radiation from the solar storm likely affected a critical onboard system, causing communication loss.
    • Recovery efforts are ongoing, but chances of recovery are currently low.

    What is OptoSAR?

    • Integrates optical cameras with Synthetic Aperture Radar (SAR).
    • Provides high-resolution imaging in all weather conditions, including through clouds and at night.
    • Useful for disaster management, agriculture, defence, mapping, and environmental monitoring.

    Significance

    • Validated several indigenous satellite technologies and mission operations.
    • Strengthens India’s private space ecosystem.
    • Lessons from the mission will improve future spacecraft reliability.
    • GalaxEye plans to launch two next-generation OptoSAR satellites within the next 24 months.

    [2022] If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth?:
    1. GPS and navigation systems could fail.
    2. Tsunamis could occur at equatorial regions.
    3. Power grids could be damaged.
    4. Intense auroras could occur over much of the Earth.
    5. Forest fires could take place over much of the planet.
    6. Orbits of the satellites could be disturbed
    7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted.
    Select the correct answer using the code given below;

    [A] 1, 2, 4 and 5 only

    [B] 2, 3, 5, 6 and 7 only

    [C] 1, 3, 4, 6 and 7 only

    [D] 1, 2, 3, 4, 5, 6 and

  • IoT Based Smart Health Tracker for Himalayan Yaks

    Why in News?

    Scientists have developed an Internet of Things (IoT) based smart system to monitor the health, movement, and stress of high altitude yaks in the Himalayan region.

    Key Highlights

    • Developed by scientists from ICAR National Research Centre on Yak (NRC-Y), Dirang (Arunachal Pradesh) and Assam Don Bosco University.
    • The device is attached to a collar worn by the yak.
    • Features:
      • Geo-fencing to track movement.
      • Real time health monitoring.
      • Early prediction of stress and illness.
    • Helps monitor livestock in remote border areas where physical surveillance is difficult.

    Significance

    • Improves yak health and productivity.
    • Supports the livelihoods of Himalayan pastoral communities (Brokpas).
    • Reduces livestock loss and enables timely veterinary intervention.
    • Demonstrates the use of IoT in precision livestock farming.

    Prelims Facts

    • Scientific name: Bos grunniens
    • Known as the “Ship of the Himalayas.”
    • Found above 8,000 feet.
    • India has about 58,000 yaks (20th Livestock Census), with nearly half in Ladakh; others are found in Arunachal Pradesh, Sikkim, Himachal Pradesh, and Uttarakhand.

    [2018] When the alarm of your smartphone rings in the morning, you wake up and tap it to stop the alarm which causes your geyser to be switched on automatically. The smart mirror in your bathroom shows the day’s weather and also indicates the level of water in your overhead tank. After you take some groceries from your refrigerator for making breakfast, it recognises the shortage of stock in it and places an order for the supply of fresh grocery items. When you step’ out of your house and lock the door, all lights, fans, geysers and AC machines get switched off automatically. On your way to office, your car warns you about traffic congestion ahead and suggests an alternative route, and if you are late for a meeting, it sends a message to your office accordingly. In the context of emerging communication technologies, which one of the following terms best applies to the above scenario?

    [A] Border Gateway Protocol

    [B] Internet of Things

    [C] Internet Protocol

    [D] Virtual Private Network

  • Index of Services Production (ISP)

    Why in News?

    The Ministry of Statistics and Programme Implementation (MoSPI) released the report of the Technical Advisory Committee (TAC) on compiling the Index of Services Production (ISP) with base year 2024-25. The trial ISP series will be released on 14 July 2026.

    Key Highlights

    • ISP will be India’s first monthly indicator to measure short-term performance of the services sector.
    • Services contribute about 53% of India’s Gross Value Added (GVA).
    • It will complement the Index of Industrial Production (IIP).

    Data Sources

    • GST aggregated data for market-based services.
    • Administrative data from Railways, Aviation, Banking and Insurance.
    • ASISSE data for Health and Education.

    Technical Features

    • Base Year: 2024-25
    • Index Type: Laspeyres Volume Index
    • Classification: 2-digit NIC 2025
    • Weights: Gross Value Added (GVA)
    • Release: Monthly, within 60 days of the reference month.

    Significance

    • Provides a high-frequency indicator for the services sector.
    • Improves economic policymaking and monitoring.
    • Enhances India’s statistical system using GST-based data.

    [2020] With reference to the international trade of India at present, which of the following statements is/are correct?

    1. India’s merchandise exports are less than its merchandise imports.
    2.India’s imports of iron and steel, chemicals, fertilisers and machinery have decreased in recent years.
    3.India’s exports of services are more than its imports of services.
    4.India suffers from an overall trade/current account deficit.
    Select the correct answer using the code given below:
    a) 1 and 2 only
    b) 2 and 4 only
    c) 3 only
    d) 1, 3 and 4 only

  • India and Costa Rica Hold First JETCO Meeting

    Why in News?

    India and Costa Rica held the first Joint Economic and Trade Committee (JETCO) meeting virtually on 6 to 7 July 2026 to deepen bilateral trade and investment ties.

    Key Highlights

    • Bilateral merchandise trade reached USD 391 million in 2025-26.
    • Both sides reviewed trade, investment, and regulatory frameworks.
    • Cooperation areas include:
      • Standards and certification
      • Food safety
      • Pharmaceutical regulation
      • Export certification
    • India highlighted opportunities in pharmaceuticals, digital technologies, manufacturing, and innovation.
    • Costa Rica shared its experience in Central American regional trade integration.

    What is JETCO?

    • A bilateral mechanism established under the MoU on Economic Cooperation.
    • It reviews trade and investment, resolves trade issues, and promotes business, regulatory, and institutional cooperation.

    Significance

    • Strengthens India’s engagement with Latin America.
    • Facilitates trade by reducing non-tariff barriers.
    • Expands opportunities in high-value sectors and innovation.

    Prelims Facts

    • Capital: San José
    • Currency: Costa Rican Colón
    • Region: Central America
    • No standing army since 1948.

    [2023] Which one of the following countries has been suffering from decades of civil strife and food shortages and was in news in the recent past for its very severe famine?

    [A] Angola

    [B] Costa Rica

    [C] Ecuador

    [D] Somalia

  • INS Mahendragiri (Project 17A Stealth Frigate)

    Why in News?

    The Indian Navy will commission INS Mahendragiri (F38), the sixth Project 17A indigenous stealth frigate, at Visakhapatnam on 11 July 2026.

    Note: Project 17A is a ₹45,000-crore Indian Navy initiative to build seven advanced Nilgiri-class stealth frigates.

    Key Highlights

    • Named after the Mahendragiri Hills in the Eastern Ghats.
    • Designed by the Indian Navy’s Warship Design Bureau (WDB).
    • Built by Mazagon Dock Shipbuilders Limited (MDL), Mumbai.
    • Features over 75% indigenous content, supporting Aatmanirbhar Bharat.
    • Powered by Combined Diesel or Gas (CODOG) propulsion for high speed and long endurance.

    Features

    • Advanced stealth design with reduced radar signature.
    • Equipped with:
      • Surface-to-Surface Missiles (SSM)
      • Surface-to-Air Missiles (SAM)
      • Electronic Warfare (EW) systems
      • Anti-Submarine Warfare (ASW) systems
      • Integrated Combat Management System (CMS)
    • High degree of automation and enhanced survivability.

    Operational Roles

    • Anti-air warfare, Anti-surface warfare, Anti-submarine warfare, Maritime security, Humanitarian Assistance and Disaster Relief (HADR), Search and Rescue (SAR), and Indo-Pacific presence missions

    Significance

    • Strengthens India’s indigenous warship-building capability.
    • Enhances the Indian Navy’s blue-water combat capability.
    • Boosts the domestic defence ecosystem, including MSMEs.
    • Reinforces India’s role as the Preferred Security Partner in the Indian Ocean Region.

    [2026] Which of the following statements with regard to stealth technology is/are correct ?
    1. Stealth objects have a very small radar cross-section and are coated with Radar Absorbing Material.
    2. Stealth objects can be detected using specific frequencies.
    3. Stealth objects are coated with metamaterials to increase the scattering of electromagnetic radiation.
    Select the answer using the code given below :

    [A] 1 only

    [B] 2 and 3 only

    [C] 1 and 2 only

    [D] 1, 2 and 3

  • India’s Steel Sector Records Growth in Q1 FY 2026

    Why in News?

    India’s steel sector recorded steady growth in Q1 FY 2026-27 with higher production, strong demand, and continued policy support.

    Key Highlights

    • Crude steel production: 42.1 Mt (+3.0% YoY)
    • Finished steel production: 41.0 Mt (+5.9% YoY)
    • Finished steel consumption: 41.6 Mt (+8.3% YoY)
    • Installed steel capacity: 221.9 MTPA (Target: 300 MTPA by 2030 under National Steel Policy 2017)
    • India remained a net importer of finished steel despite export growth.

    Major Developments

    • DGTR launched an anti-dumping probe into hot-rolled steel imports from China, Japan, and Russia.
    • Ministry of Steel promoted AI, automation, predictive maintenance, digital mining, and smart manufacturing.
    • SAIL supplied 5,700 tonnes of special steel for three Indian Navy ships.
    • JSW Group began construction of a 2 MTPA integrated steel plant in Kadapa, Andhra Pradesh.

    Green Steel

    • SAIL Rourkela launched India’s first CO₂ Dashboard for digital carbon monitoring.
    • Plantation drives and decarbonisation initiatives continued under Van Mahotsav 2026.

    [2023]Consider the following heavy industries:
    1. Fertilizer plants
    2. Oil refineries
    3. Steel plants
    Green hydrogen is expected to play a significant role in decarbonizing how many of the above industries?

    [A] Only one

    [B] Only two

    [C] All three

    [D] None

  • Oldest Quasars Ever Discovered by Euclid Telescope

    Why in News?

    The European Space Agency’s (ESA) Euclid Space Telescope has discovered 31 ancient quasars, including the oldest ever observed, dating back to when the Universe was about 670 million years old.

    Key Highlights

    • Quasars are the extremely bright cores of distant galaxies powered by supermassive black holes.
    • The newly discovered quasars belong to the Epoch of Reionisation, when the first stars and galaxies formed.
    • Euclid has doubled the number of known ancient quasars within two years.
    • The findings deepen the mystery of how supermassive black holes grew to billions of solar masses so soon after the Big Bang.
    • The James Webb Space Telescope (JWST) will further study these quasars to understand the early Universe.

    Significance

    • Helps trace the reionisation of the Universe.
    • Improves understanding of the formation of early galaxies and black holes.
    • Challenges existing models of cosmic evolution.

    UPSC Prelims Value Addition

    • Quasar: The highly luminous active galactic nucleus (AGN) of a distant galaxy, powered by matter falling into a supermassive black hole.
    • Epoch of Reionisation: The period (about 400 million to 1 billion years after the Big Bang) when the first stars and galaxies ionised neutral hydrogen, ending the Cosmic Dark Ages.

    [2017] The terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news in the context of:

    (a) Observation and understanding of the Universe

    (b) Study of the solar and the lunar eclipses

    (c) Placing satellites in the orbit of the Earth

    (d) Origin and evolution of living organisms on the Earth

  • Vikram-1 to Carry Six Payloads in Maiden Orbital Mission

    Why in News?

    Skyroot Aerospace announced that its Vikram-1, India’s first privately developed orbital-class launch vehicle, will carry six payloads during its maiden mission, Mission Aagaman, expected between July 12 and August 4, 2026.

    Key Highlights

    • Vikram-1 is India’s first privately built orbital-class rocket.
    • It will carry six payloads, including technology demonstrations and cultural artefacts.
    • Technology payloads include:
      • SOLARAS nano-satellite (Grahaa Space)
      • SCOPE (Skyroot Aerospace)
      • Embrace robotic arm (Cosmoserve Space) for space debris capture technology
      • One international payload from Dcubed GmbH (Germany).
    • Cultural payloads:
      • Cosmic Bloom: Diamond jewellery mounted on an aluminium plate.
      • Microart: An 18K gold rocket featuring micro-sculptures of Sir C.V. Raman, Dr. Vikram Sarabhai, and Dr. A.P.J. Abdul Kalam.

    Significance

    • Marks a major milestone for India’s private space sector.
    • Demonstrates indigenous launch capability for commercial and technology missions.
    • Supports innovation in satellite technologies and space debris removal.

    Orbital-class Launch Vehicle

    • A rocket capable of placing satellites into Earth’s orbit, unlike sub-orbital rockets that follow a ballistic trajectory without completing an orbit.

    [2026] Consider the following statements with regard to involvement of private entities in India’s space programme :
    1. The Indian National Space Promotion and Authorisation Centre (IN-SPACe) is an autonomous agency formed to facilitate participation of private entities.
    2. Agnikul Cosmos launched the world’s first flight using 3D-printed rocket engine.
    3. Skyroot Aerospace has developed liquid fuel for GSLV.
    Which of the statements given above is/are correct?

    [A] 1 only

    [B] 2 and 3 only

    [C] 1 and 2 only

    [D] 1, 2 and 3

  • El Niño to Dent India’s Wind & Hydropower Output

    Why in the News?

    The Centre for Research on Energy and Clean Air (CREA) projects an 18 TWh clean-power shortfall for India by June 2027, driven by El Niño-linked weakness in wind and hydropower output and rising cooling demand. The finding exposes a gap between the record renewable capacity India has installed and the storage needed to actually deliver that capacity as power, forcing the shortfall to be filled by coal.

    What has changed in India’s exposure to this El Niño cycle?

    1. Monsoon deficit: June rainfall closed with an all-India deficit of about 40%, the fifth-lowest June since 1901, with the cumulative shortfall at 20% below normal by July 6.
    2. IMD forecast: The India Meteorological Department has forecast below-normal southwest monsoon rainfall at 90% of the long-period average, with a 60% chance of a deficient season.
    3. Generation gap: CREA projects a median shortfall of 17.7 TWh and a severe-case shortfall of 24 TWh, against India’s total 2025-26 generation of about 1,846 billion units.
    4. Emissions cost: A coal-led response to the gap would release an estimated 17 million tonnes of additional carbon dioxide.

    Is this a capacity shortfall or a utilisation shortfall?

    1. Record capacity base: Non-fossil installed capacity reached 283.46 GW by March 31, including 150.26 GW of solar and 56.09 GW of wind.
    2. Record additions: India added 44.6 GW of solar and 6 GW of wind capacity in 2025-26 alone.
    3. Curtailment: Grid operators curtailed about 2.1 TWh of solar and wind generation last year to keep coal plants running.
    4. Storage gap: CREA estimates roughly 10 GWh of battery storage could have averted this curtailment.

    Why does the response default to coal rather than storage?

    1. Coal’s continuing weight: Coal remains about 42% of installed capacity even as coal generation fell 3.69% over the year.
    2. New coal pipeline: India is adding around 130 GW of new coal capacity to buffer peak demand, such as the 270.82 GW peak recorded on May 21.
    3. Policy diagnosis: CREA director Nandikesh Sivalingam states India must move faster on batteries and grid upgrades to meet future demand surges.
    4. Dispatch logic: Coal capacity can be dispatched on demand without storage investment, making it the default buffer despite its emissions cost.

    Conclusion

    India’s projected clean-power shortfall is a storage and grid-integration deficit, not a generation deficit. The 130 GW of new coal capacity being planned addresses the symptom of demand variability, not the missing battery and transmission investment needed to convert installed renewable capacity into reliable output. Without storage scaling alongside capacity addition, each future El Niño cycle will repeat the same coal fallback and its emissions cost.