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Type: Prelims Only

  • In news: Mangal Pandey (1827-1857)

    Why in the News?

    The Prime Minister paid tribute to the great freedom fighter Mangal Pandey on his birth anniversary.

    Who was Mangal Pandey?

    • Birth: Born on 19 July 1827 in Nagwa village, Ballia district, Uttar Pradesh.
    • Military Service: Joined the British East India Company’s army in 1849 as a sepoy in the 34th Bengal Native Infantry at Barrackpore.
    • Trigger of Revolt: Opposed the use of Enfield rifle cartridges greased with cow and pig fat, offensive to religious beliefs.
    • Rebellion: On 29 March 1857, attacked British officers and encouraged sepoys to rise in revolt.
    • Punishment: Arrested, tried, and executed by hanging on 8 April 1857.
    • Legacy: Regarded as the “Hero of the First War of Indian Independence” and a symbol of resistance.

    Back2Basics: 1857 War of Independence

    • Overview: The First War of Indian Independence or the Great Rebellion of 1857.
    • Sepoy Composition: Indians made up over 87% of the British Indian Army but faced severe discrimination.
    • Root Causes:
      • Military Discontent: Unequal pay, poor promotion prospects, denial of allowances.
      • Religious Insensitivity: Use of animal fat-greased cartridges insulted Hindu and Muslim beliefs.
      • Economic Hardship: Heavy land taxes, decline in traditional crafts, and rising unemployment.
      • Political Grievances: Annexation of Indian states and enforcement of oppressive laws.
    • Outbreak:
      • Barrackpore: Mangal Pandey’s defiance on 29 March 1857 marked the beginning.
      • Meerut: On 10 May 1857, sepoys rebelled after refusing cartridges and were imprisoned.
      • Delhi: Rebels marched to Delhi and declared Bahadur Shah II as Emperor.
    • Spread of Revolt: Uprising expanded to Kanpur, Lucknow, Jhansi, Bihar, Bareilly, Faizabad, and beyond.
    • Mass Participation: Involved sepoys, peasants, landlords, and regional rulers.

    Suppression and Its Aftermath:

    • Brutal Suppression: Rebellion was crushed by 1859; Delhi was recaptured in September 1857.
    • Administrative Shift: British East India Company was dissolved; India came under direct British Crown rule, initiating the British Raj.
    • Military Reorganization: Indian representation in the army was reduced and reorganized to prevent future revolts.
    • Increased Repression: Racial discrimination and harsh policies intensified post-revolt.

     

    [UPSC 2006] Who was the Governor-general of India during the Sepoy Mutiny?

    Options: (a) Lord Canning* (b) Lord Dalhousie (c) Lord Hardinge (d) Lord Lytton

     

  • Gujarat’s Tribal Genome Sequencing Project

    Why in the News?

    Gujarat has launched India’s first Tribal Genome Sequencing Project to map tribal genetic data, contributing to the national Genome India Project (GIP).

    About the Gujarat Tribal Genome Project:

    • Launch & Duration: Announced in Gujarat’s 2025–26 budget; spans 5 years under Gujarat Biotechnology Research Centre (GBRC).
    • Target Population: Focuses on genome sequencing of tribal communities forming ~15% of Gujarat’s population (~1 crore).
    • Objective: Addresses under-representation in Genome India Project (GIP), which had only ~100 tribal samples from Gujarat.
    • Sample Size: Involves 4,158 individuals, including 378 trio families, to create a 2,000-sample reference genome panel.
    • Data Collection: Includes blood, stool, genealogical, physiological, and lifestyle information.

    Key Features:

    • Precision Medicine Applications
      • Early Detection: Enables screening for sickle cell anaemia, G6PD deficiency, BRCA-linked cancers.
      • Gene-Trait Mapping: Explores genetic links to traits like agility and archery.
    • Genomic Sampling Protocol
      • Filtering: Uses SNP genotyping to remove closely related samples.
      • Sequencing: Conducts Whole Genome Sequencing (WGS) on 2,000 diverse samples via Illumina NovaSeq 6000.
      • Data Security: Employs double encryption for privacy and anonymity.

    About the Genome India Project (GIP):

    • Launch: Initiated in January 2020 by the Department of Biotechnology (DBT).
    • Structure: Multi-institutional consortium involving top Indian research bodies.
    • Objectives
      • Diversity Mapping: Decode genetic variation across Indian population.
      • Reference Panel: Build Single Nucleotide Polymorphism (SNP) -based haplotype database for Indian genomes.
      • Biobank Creation: Establish DNA reserves for research and therapy development.
    • Key Achievements
      • Sequencing Scale: 10,074 genomes sequenced from 99 ethnic groups.
      • Data Storage: Securely stored at Indian Biological Data Centre (IBDC), Faridabad.
      • Insights: Revealed rare traits aiding affordable diagnostics and predictive tools.
    • Significance
      • Global Impact: Offers India-specific insights to global genomics research.
      • Healthcare Value: Enables evidence-based, genetically informed policy and diagnosis.
    [UPSC 2017] With reference to agriculture in India, how can the technique of ‘genome sequencing’, often seen in the news, be used in the immediate future?

    1. Genome sequencing can be used to identify genetic markers for disease resistance and drought tolerance in various crop plants

    2. This technique helps in reducing the time required to develop new varieties of crop plants

    3. It can be used to decipher the host-pathogen relationships in crops

    Select the correct answer using the code given below:

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

     

  • BioEmu AI tool for Protein Flexibility Modelling

    Why in the News?

    In a breakthrough, scientists have developed BioEmu—an AI tool that predicts the full range of protein shapes, offering faster and scalable insights into protein dynamics.

    BioEmu AI tool for Protein Flexibility Modelling

    What is BioEmu?

    • Overview: It is a deep learning tool that predicts the equilibrium ensemble of a protein — meaning all the different shapes a protein can naturally take.
    • It works like diffusion models, starting with random/noisy inputs and learning to rebuild protein shapes.
    • Training: It was trained on-
      • AlphaFold structures (millions of predicted proteins)
      • Molecular dynamics (MD) simulation data (200 ms)
      • 500,000 mutant sequences from lab experiments
    • Speed: Once trained, BioEmu can quickly create thousands of 3D protein structures on a single GPU in just minutes to hours.

    Key Features of BioEmu:

    • Flexibility Capture: Shows how proteins change shape, fold/unfold, or form hidden binding pockets.
    • Accuracy:
      • Detects 83% of large and 70–81% of small shape changes.
      • Predicts open/closed forms of enzymes like adenylate kinase.
    • Mutation Analysis: Helps see how mutations affect protein structure and stability.
    • Fast & Scalable: Much faster than traditional MD simulations; works on thousands of proteins using less computing power.
    • Snapshots Only: Gives static 3D shapes, not full motion timelines.
    • Limitations: Can’t handle membrane proteins, drug molecules, or multi-chain complexes.

    Why is BioEmu Important?

    • Improves Protein Modelling: Adds to what AlphaFold does by showing how proteins move, not just what they look like.
    • Helps Drug Discovery: Finds hidden drug binding sites — speeding up the search for new medicines.
    • More Accessible: Works on basic hardware, making advanced protein modelling available to more researchers.
    • Combines with Other Tools: Can be used with molecular dynamics for deeper study.
    • Future of Research: Encourages students and scientists to learn a mix of AI, biology, and physics.
    [UPSC 2020] Which of the following statements are correct regarding the general difference between plant and animal cells?

    1. Plant cells have cellulose cell walls whilst animal cells do not.

    2. Plant cells do not have plasma membrane unlike animal cells which do.

    3. Mature plant cell has one large vacuole vacuoles.

    Select the correct answer using the code given below:

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

     

  • International Moon Day

    Why in the News?

    Observed every year on July 20, the International Moon Day marks the historic first human landing on the Moon by the Apollo 11 mission in 1969.

    moon day

    About International Moon Day:

    • Date & Purpose: Observed annually on July 20 to mark the Apollo 11 Moon landing in 1969.
    • UN Recognition: Declared by the UN General Assembly in 2021 on the recommendation of COPUOS.
    • First Observance: Officially celebrated for the first time on July 20, 2022.
    • Activities: Includes sky-gazing, science outreach, and student competitions to promote space awareness.
    • Date Controversy: While the lunar module landed on July 20, Neil Armstrong stepped onto the Moon at 2:56 UTC on July 21—yet July 20 remains the official date.

    Significance:

    • Historic Milestone: Celebrates Apollo 11 and humanity’s first step on the Moon by Neil Armstrong and Buzz Aldrin.
    • Peaceful Space Use: Promotes the Moon as a shared heritage and fosters international cooperation in outer space.
    • Sustainability Focus: Encourages responsible and eco-friendly exploration of lunar resources.
    • Global Unity: Reflects the UN’s vision of peaceful space collaboration under themes like “One Moon, One Vision, One Future”.
    [UPSC 2009] India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier?

    Options: (a) Australia (b) Canada (c) China* (d) Japan

     

  • Piezo- Photocatalytic Water Filter

    Why in the News?

    Indian scientists from INST Mohali, IIT-Dharwad, and IIT-Kharagpur have developed a low-cost, reusable water filter that removes toxic industrial dyes using a process called piezo-photocatalysis.

    About the Light-Induced Water Filter:

    • Material Used: Built using 3D-printed polylactic acid (PLA) sheets (a biodegradable plastic); Sheets coated with bismuth ferrite (BFO) nanoparticles.
    • Working: It works in two ways. Together, this is called piezo-photocatalysis.
      • Photocatalysis: Uses sunlight to break dye molecules.
      • Piezoelectric effect: Uses vibrations (ultrasound) to work even in the dark.
    • Reusable: Can be used 5 times with only 3% loss in performance.
    • Lab tests showed:
      • 99% Congo Red removal
      • 74% Methylene Blue removal (in 90 minutes)

    Significance:

    • Eco-Friendly Solution: Removes harmful dyes without harmful chemicals or electricity.
    • Cost-Effective: Cheaper and safer than ozone or chemical-intensive treatments.
    • Green Energy Use: Operates using sunlight and mechanical vibrations—no external power needed.
    • Policy Alignment: Supports Namami Gange, Jal Nigam, and Aatmanirbhar Bharat missions.
    • Scalability: Ideal for deployment near textile treatment plants as a sustainable technology.
    [UPSC 2023] With reference to the role of biofilters in the Recirculating Aquaculture System, consider the following statements:

    1. Biofilters provide waste treatment by removing uneaten fish feed

    2.Biofilters convert ammonia present in fish waste to nitrate

    3.Biofilters increase phosphorus as nutrient for fish in water

    How many of the statements given above are correct?

    Options: (a) Only one (b) Only two* (c) All three (d) None

     

  • [pib] INS Nistar Diving Support Vessel

    Why in the News?

    Indian Navy commissioned INS Nistar, the country’s first indigenously designed and constructed Diving Support Vessel (DSV).

    [pib] INS Nistar Diving Support Vessel

    About INS Nistar:

    • Project Origin: First of two Diving Support Vessels (DSVs) ordered by the Navy in 2018.
    • Developer: Built by Hindustan Shipyard Ltd with input from 120 Indian MSMEs.
    • Commissioning: Inducted at Naval Dockyard, Visakhapatnam.
    • Legacy Name: Named after the Soviet-origin INS Nistar (1971–1989).
    • Indigenization: Over 80% indigenous content, in line with Aatmanirbhar Bharat.
    • Sister Ship: INS Nipun, launched in 2022, will join soon.

    Key Features:

    • Rescue Depth: Supports diving and submarine rescue operations up to 300 metres.
    • Rescue Equipment: Equipped with ROVs, Hyperbaric Lifeboats, and Diving Chambers.
    • DSRV Role: Functions as mothership for Deep Submergence Rescue Vehicles.
    • Size: 120 metres long with a displacement of ~10,500 tonnes.
    • Endurance: Can stay at sea for over 60 days.
    • Utility Gear: Fitted with a 15-tonne subsea crane and helipad facilities.
    • Medical Support: Includes OT, ICU, hospital beds, and hyperbaric treatment units.

    Significance for India:

    • Submarine Rescue: Provides independent submarine rescue capability.
    • Operational Autonomy: Ends reliance on leased rescue platforms.
    • Strategic Status: Places India among 12 countries with full submarine rescue capability.
    • Regional Role: Strengthens India’s position as Net Security Provider in the Indian Ocean.
    [UPSC 2016] Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently?

    Options: (a) Amphibious warfare ship (b) Nuclear-powered submarine (c) Torpedo launch and recovery vessel* (d) Nuclear-powered aircraft carrier

     

  • In news: Reykjanes Peninsula

    Why in the News?

    Recently a volcano erupted in south-west Iceland, continuing a pattern of recurring geological activity on the Reykjanes Peninsula.

    In news: Reykjanes Peninsula

    About the Reykjanes Peninsula:

    • Location: Situated in southwest Iceland along the Mid-Atlantic Ridge where tectonic plates diverge.
    • Volcanic Reawakening: Dormant for centuries until 2021; now sees recurring eruptions.
    • Eruption Type: Known for fissure eruptions—lava flows from cracks, not a central crater.
    • Key Sites: Includes Grindavik (evacuated), Blue Lagoon spa, and Svartsengi power plant.
    • Volcanic Importance: Part of Iceland’s 30+ active volcanic zones.

    Key Features:

    • Eruption Style: Produces steady lava flows with minimal ash output.
    • Flight Safety: Air traffic remains unaffected due to lack of stratospheric ash.
    • Evacuation Impact: Grindavik largely abandoned after 2023 lava threat.
    • Long-Term Activity: Eruptions may persist for decades or longer.
    • Iceland Snapshot: Population ~400,000; similar in size to Kentucky.
    • Tourism Appeal: Attracts visitors like other volcanic hotspots—Mexico, Indonesia, Sicily, and New Zealand.
    [UPSC 2014] Consider the following geological phenomena:

    1. Development of a fault 2. Movement along a fault

    3. Impact produced by a volcanic eruption 4. Folding of rocks

    Which of the above cause earthquakes?

    Options: (a) 1, 2 and 3 (b) 2 and 4 (c) 1, 3 and 4 (d) 1, 2, 3 and 4*

     

  • MoSPI to integrate 8th Economic Census with 16th Population Census

    Why in the News?

    The Ministry of Statistics and Programme Implementation (MoSPI) is preparing for India’s 8th Economic Census by integrating it with the upcoming 16th Population Census.

    About the Economic Census:

    • Conducting Body: Ministry of Statistics and Programme Implementation (MoSPI).
    • Purpose: Creates a detailed database of non-agricultural economic establishments in India.
    • Key Data Captured: Covers location, clustering, ownership, employment size, and type of economic activity.
    • Unorganised Sector Inclusion: Includes informal units, vital for understanding employment dynamics.
    • Historical Background:
      • Economic Enquiry Committee: Proposed by Visvesvaraya Committee (1925); Setup by Bowley-Robertson Committee (1934).
      • Outcome: Led to the creation of the Central Statistical Office (CSO) in 1951 and national statistical systems.
      • First Census: Conducted in 1977 (excluding Lakshadweep), targeting non-agricultural units with at least one hired worker.
    • Timeline of Economic Censuses:
      • Years Conducted: 1980, 1990, 1998, 2005, 2013, and 2019–21 (7th Census).
      • Integration with Population Census: 2nd and 3rd rounds were aligned with the 1981 and 1991 Population Censuses.
      • 7th Census Status: Completed in 2021, but results pending due to COVID-related data quality issues.
      • Execution Support: MoSPI partnered with the CSC (Common Service Centre) network for grassroots-level implementation.

    Integration with the 16th Population Census:

    • Objective: Improve efficiency and reduce costs by leveraging shared field operations.
    • Data Collection: Enumerators will note household-based economic activity for MoSPI processing.
    • Census Schedule:
      • Oct 1, 2026: Snow-bound and remote regions (e.g., Ladakh, J&K, HP, Uttarakhand).
      • Mar 1, 2027: Rest of the country.
    • Preparatory Work: State and district committees have been formed to plan the 8th Census.
    [UPSC 2018] As per the NSSO 70th Round “Situation Assessment Survey of Agriculture Households”, consider the following statements:

    1.Rajasthan has the highest percentage share of agriculture households among its rural households.

    2.Out of the total households in the country, a little over 60 percent being to OBCs.

    3.In Kerala, a little over 60 percent of agriculture households reported to have received maximum income from sources other than agriculture activities.

    Which of the statements given above is/are correct?

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

     

  • Tipu Sultan and Anglo-Mysore Wars (1767-1799)

    Why in the News?

    The new NCERT Class 8 Social Science textbook omits Tipu Sultan, Haidar Ali, and the Anglo-Mysore Wars from its chapter on India’s colonial era.

    Tipu Sultan and Anglo-Mysore Wars (1767-1799)

    Legend of Tipu Sultan and Haidar Ali:

    • Rise of Haidar Ali: Started as a horseman in the Mysore army and became de facto ruler by 1761 through military skill.
    • Military Reforms: Introduced Western training, built arms factories with French help, and strengthened cavalry and artillery.
    • Tipu Sultan: Born in 1751, trained by French officers and well-versed in Islamic law, Persian, Arabic, and science.
    • Administrative Innovations: Introduced a new calendar, land revenue reforms, and coins in gold, silver, and copper with Persian inscriptions.
    • Governance and Industry: Created seven departments, promoted silk industry, and envisioned the future Kannambadi Dam.
    • French Alliance: Maintained strong ties with France, alarming the British amid global Anglo-French rivalry.
    • Technological Advancement: Deployed iron-cased Mysorean rockets, which inspired British Congreve rockets.
    • Moral Governance: Banned liquor, gambling, and prostitution to enforce discipline.
    • Religious Policy: Though devoutly Islamic, he patronized temples and mathas, but faced criticism for intolerance in annexed regions.

    About the Anglo-Mysore Wars:

    First Anglo-Mysore War (1767–69)

    • Alliance Against Mysore: British, Marathas, and Nizam formed a coalition against Haidar Ali.
    • Diplomatic Victory: Haidar neutralized the Marathas and secured Nizam’s support.
    • Outcome: Treaty of Madras (1769) restored the status quo and mutual restitution of territories.

    Second Anglo-Mysore War (1780–84)

    • Trigger: British violation of the Treaty of Madras and occupation of French port Mahe.
    • Coalition Formation: Haidar allied with Marathas and Nizam against the British.
    • Major Battle: Captured Arcot and defeated Col. Baillie; Haidar died in 1782.
    • Conclusion: Tipu continued the fight; Treaty of Mangalore (1784) was the last time an Indian power dictated terms to the British.

    Third Anglo-Mysore War (1790–92)

    • Cause: Tipu’s attack on Travancore, a British ally.
    • British Response: Cornwallis led a coordinated campaign with Maratha and Nizam support.
    • Result: Tipu ceded half his territory and paid ₹3 crore under the Treaty of Seringapatam (1792).

    Fourth Anglo-Mysore War (1799)

    • British Strategy: Wellesley isolated Tipu diplomatically over his French ties.
    • Final Battle: Tipu was killed defending Seringapatam on May 4, 1799, ending native resistance in South India.

    Aftermath of the Wars:

    • Fall of Resistance: Tipu’s death marked the end of organized native military opposition in the South.
    • British Control: Wodeyars reinstated as puppet rulers under Subsidiary Alliance; key territories annexed by the British.
    • Territorial Division: Nizam received Gooty and Gurramkonda; Marathas declined British land offer.
    • Administrative Changes: Mysore came under direct British rule in 1831 due to alleged misrule; restored to Wodeyars in 1881 by Lord Ripon under a constitutional monarchy.
    • Legacy: Anglo-Mysore Wars showed how native resistance could challenge colonial power through modernization, alliances, and tactical innovation.
    • Rocketry Influence: Tipu’s military rocketry was studied and adapted by the British into European warfare.
    [UPSC 2014] With reference to the Anglo-Mysore Wars, consider the following statements:

    1. In the Third Battle of Panipat, Ahmed Shah Abdali defeated Ibrahim Lodi.

    2. Tipu Sultan was killed in the Third Anglo-Mysore War.

    3. Mir Jafar entered in a conspiracy with the English for the defeat of Nawab Siraj-ud-daulah in the Battle of Plassey.

    Which of the statements given above is/are correct?

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

     

  • Successful trial of Akash Prime Air Defence System

    Why in the News?

    India successfully tested the Akash Prime Missile System in Ladakh, neutralizing two high-speed aerial targets at high altitude.

    About Akash Prime:

    • What It Is: Akash Prime is an upgraded version of the Akash Surface-to-Air Missile (SAM) system.
    • High-Altitude Capability: Designed to operate effectively above 4,500 metres.
    • Development: Developed by DRDO with BDL, BEL, and Army Air Defence.
    • Operational Use: Proven in Operation Sindoor against aerial threats.
    • Production Trials: Validated through First of Production Model (FoPM) firing trials.
    • Deployment: Already in use at IAF bases and forward posts along the LAC in Ladakh.

    Key Features:

    • Seeker Upgrade: Equipped with an indigenous active Radio Frequency (RF) seeker for better accuracy.
    • Altitude Adaptability: Engineered for high-altitude, cold-climate operations.
    • Multi-Target Engagement: Capable of engaging multiple aerial threats at once.
    • Speed & Accuracy: Travels at Mach 2.5 with up to 90% kill probability.
    • Electronic Warfare: Equipped with ECCM features to resist electronic jamming.
    • Radar Integration: Uses Rajendra radar for detection, targeting, and tracking.
    • Operational Range: Effective engagement range of 25–30 km.

    Other Variants of Akash:

    • Akash Mark-I (1990–2005): First version under IGMDP; achieved successful dual-target intercepts by 2005.
    • Akash-1S (2019): Enhanced version with 30 km range and 60 kg warhead; effective against aircraft and drones; tested successfully in May 2019.
    • Akash Prime (2021 onwards): Added active RF seeker and altitude/weather resistance; tested on September 27, 2021.
    • Akash-NG (Next Generation): Approved in 2016 with ₹470 crore funding; offers faster response and improved aerial threat protection.

     

    [UPSC 2009] In the context of Indian defence, consider the following statements:

    1. The Shourya missile flies with a speed of more than 8 Mach. 2. The range of Shourya missile is more than 1600 km. Which of the statements given above is/are correct ?

    Options: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2*