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Type: Prelims Only

  • 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).

  • Rakhigarhi Skeletons Undergo DNA Analysis & Facial Reconstruction

    Why in News?

    The Archaeological Survey of India (ASI) has sent nearly 5,000-year-old skeletons excavated from Rakhigarhi, Haryana, for DNA analysis and facial reconstruction to gain insights into the people of the Harappan Civilization.

    Key Highlights

    • Five skeletons recovered:
      • 3 females and 2 males (preliminary assessment).
      • Estimated age: 30-40 years.
    • Scientific Institutions Involved:
      • Anthropological Survey of India (AnSI), Kolkata: Anthropological study and facial reconstruction.
      • Birbal Sahni Institute of Palaeosciences (BSIP), Lucknow: Ancient DNA analysis.
    • Objectives of the Study:
      • Determine ancestry and genetic profile.
      • Identify cause of death and possible diseases.
      • Reconstruct facial features and physical appearance.
      • Estimate height, lifestyle, and social status.
      • Reconstruct the palaeo-environment of the Harappan period.
    • Three additional disturbed burials with fragmentary remains were also discovered at Mound No. 7, the site’s ancient cemetery.

    About Rakhigarhi

    • Located in Hisar district, Haryana.
    • Largest known site of the Indus Valley (Harappan) Civilization.
    • Flourished during 2600-1900 BCE (Mature Harappan Phase).
    • Known for Planned urban settlement, Drainage system, Granaries, Cemetery remains, and Craft production

    Ancient DNA (aDNA)

    • DNA extracted from ancient bones, teeth, or other biological remains.
    • Used to study Human migration, Evolution, Population genetics, Ancient diseases

    [2021] Which one of the following ancient towns is well-known for its elaborate system of water harvesting and management by building a series of dams and channelizing water into connected reservoirs?

    [A] Dholavira

    [B] Kalibangan

    [C] Rakhigarhi

    [D] Ropar

  • Abhigyan App and NAFIS

    Why in the news?

    The Union Home Minister, Amit Shah, launched Abhigyan, a mobile application developed by the National Crime Records Bureau that enables police personnel to identify suspects through portable fingerprint scanning linked to the national fingerprint database.

    Abhigyan App

    • Enables police officers to capture fingerprints using portable scanners and smartphones.
    • Connected to the National Automated Fingerprint Identification System (NAFIS).
    • Can match fingerprints with national records in about 35 seconds.
    • Features:
      • Real-time identification
      • Mobile access to criminal records
      • Two-factor authentication
      • Field-level policing support

    National Automated Fingerprint Identification System (NAFIS)

    • Launched in 2022 by NCRB.
    • A centralized biometric database of Criminal suspects, Arrested persons, Convicts, and Prison inmates
    • Contains over 1.3 crore fingerprint records.
    • Facilitates nationwide sharing and matching of fingerprint data.

    Legal Basis

    • Based on the Criminal Procedure (Identification) Act, 2022.
    • Authorizes collection of biometric measurements including Fingerprints, Palm prints, Iris and retina scans, Photographs, and Biological samples

    Significance

    • Faster identification of repeat offenders and absconders.
    • Strengthens inter-state criminal tracking.
    • Supports crime investigation and law enforcement.
    • Raises concerns regarding Privacy, Data protection, and Scope of biometric collection from individuals not formally accused.

    Criminal Procedure (Identification) Act, 2022

    • Replaced the Identification of Prisoners Act, 1920.
    • Expands the categories of persons whose biometric data can be collected.
    • NCRB is designated as the central repository of records.
    • Data may generally be retained for 75 years, subject to prescribed conditions.

    [2018] In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?
    1. Iris scanning
    2. Retinal scanning
    3. Voice recognition
    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

  • Right to Walk on Footpaths Declared a Fundamental Right

    Why in the news?

    The Supreme Court, in a landmark judgment authored by Justice P. S. Narasimha, held that the right to walk safely on demarcated and well-maintained footpaths is a Fundamental Right, which takes precedence over the privilege of motorized vehicles.

    Right to Walk as a Fundamental Right

    • Derived from Article 19(1)(d): Right to move freely throughout the territory of India.
    • Also linked with:
      • Article 21: Right to life and personal liberty.
      • Article 19(1)(a): Freedom of expression.
      • Article 19(1)(b): Right to assemble peacefully.
      • Article 19(1)(c): Right to form associations.

    Court’s Observations

    • Walking is the most basic form of human movement and is intrinsically connected to life and dignity.
    • Public spaces cannot become monopolies of motorized vehicles.
    • If a road exists, authorities have an enforceable duty to provide and maintain footpaths.
    • Pedestrian rights must override the convenience of motorized traffic.

    Directions to Government

    • Create a statutory framework recognizing the right to walk.
    • Establish a dedicated regulatory body for:
      • Planning pedestrian infrastructure.
      • Enforcement and monitoring.
      • Providing remedies for violations.
    • Judgment sent to Ministries of:
      • Housing & Urban Affairs
      • Rural Development
      • Road Transport & Highways

    Case Background

    • The ruling arose from the death of a five-year-old child who was run over by a truck while walking to school with his father.
    • The Court awarded compensation exceeding ₹11 lakh.

    [2018] Right to Privacy is protected as an intrinsic part of Right to Life and Personal Liberty. Which of the following in the Constitution of India correctly and appropriately imply the above statement?

    (a) Article 14 and the provisions under the 42nd Amendment to the Constitution.

    (b) Article 17 and the Directive Principles of State Policy in Part IV.

    (c) Article 21 and the freedoms guaranteed in Part III.

    (d) Article 24 and the provisions under the 44th Amendment to the Constitution.

  • 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

  • RBI Temporarily Lifts Interest Rate Ceiling on FCNR(B) & NRE Deposits

    Why in the news?

    The RBI has temporarily removed the interest rate ceiling on fresh FCNR(B) deposits (3-5 years) and NRE deposits (3 years and above) from 17 June 2026 to 30 September 2026 to attract foreign currency inflows, support the rupee, and ease external financing conditions.

    FCNR(B) Deposits

    • Foreign Currency Non-Resident (Bank) Deposits allow NRIs to maintain fixed deposits in designated foreign currencies.
    • Principal and interest are protected from exchange-rate risk.
    • RBI has removed the interest rate cap on fresh and renewed deposits of 3-5 year tenor.
    • Banks have already increased FCNR(B) deposit rates to around 7%.

    NRE Deposits

    • Non-Resident External (NRE) Accounts are rupee-denominated accounts maintained by NRIs.
    • Both principal and interest are fully repatriable.
    • Interest rate ceiling on fresh and renewed deposits of 3 years and above has been removed temporarily.
    • Transfers from NRO to NRE accounts will not qualify for this relaxation.

    RBI’s Objective

    • Attract larger NRI deposits and foreign currency inflows.
    • Strengthen foreign exchange reserves.
    • Support rupee stability.
    • Reduce overseas borrowing costs for banks and public sector entities.
    • Complement RBI’s concessional forex swap facility announced on 5 June 2026.

    Expected Impact

    • Analysts estimate $30-50 billion of inflows by Q3 FY27.
    • Similar FCNR(B) scheme in 2013 attracted nearly $25 billion.
    • Increased foreign currency liquidity may ease external sector pressures.

    [2021] Consider the following:
    1. Foreign currency convertible bonds
    2. Foreign institutional investment with certain conditions
    3. Global depository receipts
    4. Non-resident external deposits
    Which of the above can be included in Foreign Direct Investments?

    [A] 1, 2 and 3

    [B] 3 only

    [C] 2 and 4

    [D] 1 and 4

  • 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