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GS Paper: GS3

  • INS Aridhaman Joins Indian Navy, Strengthens Nuclear Deterrence

    Why in the News?

    India quietly commissioned INS Aridhaman, the third indigenously built nuclear powered ballistic missile submarine (SSBN), at Visakhapatnam, strengthening India’s nuclear triad capability.

    INS Aridhaman: Key Details

    • Name: INS Aridhaman (S4)
    • Type: Nuclear Powered Ballistic Missile Submarine (SSBN)
    • Class: Arihant Class
    • Displacement: ~7,000 tonnes
    • Built under: Advanced Technology Vessel (ATV) Project
    • Built at: Ship Building Centre, Visakhapatnam

    Missile Capability

    INS Aridhaman can carry:

    • K 15 Sagarika missiles
      • Up to 24 missiles
      • Range: ~750 km
    • K 4 missiles
      • Up to 8 missiles
      • Range: ~3,500 km
    • Future capability:
      • K 5 nuclear capable missiles (under development)
    • This gives greater firepower compared to earlier submarines.

    India’s Nuclear Triad

    India now maintains Nuclear Triad:

    • Land Based: Agni missiles
    • Air Based: Fighter aircraft nuclear delivery
    • Sea Based: SSBN submarines (like INS Aridhaman)
    • Countries with Nuclear Triad: India, USA, Russia, China, and France

    India’s SSBN Fleet

    • INS Arihant — 2016
    • INS Arighaat — 2024
    • INS Aridhaman — 2026
    • S4* (likely INS Arisudan) — Under trials
    [2016] Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently? (a) Amphibious warfare ship (b) Nuclear-powered submarine (c) Torpedo launch and recovery vessel (d) Nuclear-powered aircraft carrier

  • Great Nicobar Project: Tribal Relocation Plan Raises Concerns

    Why in the News

    A draft relocation plan for Nicobarese tribal communities linked to the ₹92,000 crore Great Nicobar Island (GNI) mega project has triggered fresh concerns and protests.

    Great Nicobar Infrastructure Project

    • Location: Great Nicobar Island
    • Project Cost: ₹92,000 crore
    • Objective:
      • Infrastructure development
      • Strategic maritime hub
      • Port and airport development

    Project is strategically important for:

    • Indo Pacific presence
    • Maritime trade routes
    • National security

    Tribes of Andaman & Nicobar 

    Major tribes:

    • Nicobarese
    • Shompen
    • Jarawa
    • Sentinelese
    • Onge
    • Great Andamanese
    [2014] Which one of the following pairs of islands is separated from each other by the ‘Ten Degree Channel’? (a) Andaman and Nicobar (b) Nicobar and Sumatra (c) Maldives and Lakshadweep (d) Sumatra and Java

  • Government Exempts Customs Duty on 40 Petrochemical Products

    Why in the News?

    The Government of India has exempted Customs Duty on 40 petrochemical products till June 30, 2026, to reduce supply disruptions and cost pressures caused by the West Asia conflict.

    Key Highlights

    • Customs duty exemption for 40 petrochemical products
    • Valid till: June 30, 2026
    • Notification issued: April 1, 2026
    • Objective: Ensure supply stability and reduce input costs

    Major Products Covered

    Important petrochemical items include:

    • Polypropylene
    • Polystyrene
    • Polyols
    • Polybutadiene
    • Styrene Butadiene
    • Anhydrous Ammonia
    • Purified Terephthalic Acid (PTA)
    • Mono Ethylene Glycol (MEG)
    [2018] Consider the following statements: 
    1 The quantity of imported edible oils is more than the domestic production of edible oils in the last five years. 
    2 The Government does not impose any customs duty on all the imported edible oils as a special case. 
    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

  • Manufacturing PMI Drops to 53.9 Amid West Asia Crisis

    Why in the News?

    India’s Manufacturing Purchasing Managers’ Index (PMI) fell sharply to 53.9 in March 2026, the lowest level in nearly 4 years, mainly due to West Asia conflict, rising costs, and weaker demand.

    Key Highlights

    • March 2026 PMI: 53.9
    • February 2026 PMI: 56.9
    • Lowest since: June 2022
    • Source: HSBC India Manufacturing PMI

    What is PMI

    Purchasing Managers’ Index (PMI) measures business activity based on:

    • New orders
    • Output
    • Employment
    • Supplier delivery times
    • Inventory levels

    PMI Interpretation

    • Above 50 → Expansion
    • Below 50 → Contraction
    • India’s PMI at 53.9 still indicates growth, but at slower pace.
    [2012] In India, in the overall Index of Industrial Production (IIP), the Indices of Eight Core Industries have a combined weight of 37.90%. Which of the following are among those Eight Core Industries? 
    1 Cement 
    2 Fertilizers 
    3 Natural 
    3 Gas 
    4 Refinery products 
    5 Textiles 
    Select the correct answer using the code given below: 
    (a) 1 and 5 only (b) 2, 3 and 4 only (c) 1, 2, 3 and 4 only (d) 1, 2, 3, 4 and 5

  • Why is India pushing piped gas now?

    Why in the News?

    India is accelerating the expansion of Piped Natural Gas (PNG) connections as part of its energy transition strategy. The push gains prominence because India already has ~33 crore LPG connections, yet domestic natural gas production alone can potentially cater to ~30 crore households if switched to PNG. This signals a possible large-scale substitution of LPG, a system historically dependent on imports and logistics-heavy distribution. 

    Why is India pushing for PNG expansion now?

    1. Import Dependence Reduction: LPG imports remain high; natural gas offers relatively diversified sourcing including domestic production.
    2. Domestic Resource Utilisation: Domestic gas production can cater to ~30 crore PNG connections.
    3. Infrastructure Push: Expansion of pipeline network by ~50,000 km alongside existing 25,000 km.
    4. Policy Mandates: New housing approvals require PNG connections; ~6 million LPG households expected to transition.
    5. Energy Transition Goals: Cleaner fuel shift aligned with lower emissions compared to LPG.

    How do Liquefied Petroleum Gas (LPG), Liquefied Natural Gas (LNG), Piped Natural Gas (PNG), and Compressed Natural Gas (CNG) differ structurally?

    1. LPG Composition: Derived from crude oil refining and natural gas processing; consists mainly of propane and butane. Stored as a liquid under moderate pressure in cylinders, making it portable but dependent on refining output and physical distribution networks.
    2. LNG Processing: Natural gas cooled to around –160°C to convert it into liquid form, reducing its volume by nearly 1000 times. Enables long-distance transportation via ships and storage in cryogenic tanks before regasification for use.
    3. CNG Use: Natural gas compressed to high pressure (200–250 kg/cm²) to reduce volume. Stored in cylindrical tanks and primarily used as an automobile fuel due to its efficiency and lower emissions.
    4. PNG Delivery: Natural gas (mainly methane) supplied directly through a network of pipelines to households, industries, and commercial establishments. Eliminates the need for storage cylinders and ensures uninterrupted supply.
    5. Key Structural Difference: LPG relies on cylinder-based, last-mile physical delivery, whereas PNG depends on fixed pipeline infrastructure for continuous supply; LNG and CNG act as transport and storage forms of natural gas enabling distribution across distances and sectors. 

    Can PNG replace LPG effectively in households?

    1. Energy Efficiency: PNG delivers marginally higher calorific value than LPG.
    2. Ease of Transition: Minimal changes in cooking equipment required.
    3. Cost Competitiveness: Comparable pricing makes PNG a viable substitute.
    4. Adoption Constraint: Awareness gaps and technical familiarity limit uptake.
    5. Conclusion: PNG is a functional drop-in replacement, but behavioural barriers persist.

    What structural constraints hinder PNG expansion?

    1. Pipeline Connectivity Gaps: Limited reach beyond urban clusters; Tier-2/3 cities under development.
    2. Last-Mile Challenges: ~90% households still not connected to trunk pipelines.
    3. Geographic Limitations: Network concentrated in western and southern India; uneven national coverage.
    4. Industrial Prioritisation: Pipelines aligned more for industrial demand than household use.
    5. Infrastructure Approval Delays: Land acquisition and regulatory approvals slow expansion.

    How is the government accelerating PNG adoption?

    1. Policy Mandates: PNG connections mandatory in new residential projects.
    2. City Gas Distribution (CGD): Licensing expansion to private entities for faster rollout.
    3. Pipeline Expansion Targets: Network planned to cater to 12 crore PNG connections by 2034-35.
    4. Institutional Framework: Petroleum and Natural Gas Regulatory Board (PNGRB) oversight.
    5. Integrated Energy Planning: Linking LNG terminals, pipelines, and city distribution networks.

    Will PNG reduce India’s energy import burden?

    1. Partial Substitution: LNG imports still required due to limited domestic production.
    2. Domestic Boost: ONGC projects increase in output (e.g., KG-DWN 98/2 basin).
    3. Supply Mix Diversification: Multiple LNG sourcing countries reduce single-source dependency.
    4. Infrastructure Dependency: Import benefits contingent on pipeline network efficiency.
    5. Conclusion: PNG reduces LPG import dependency but does not eliminate overall energy imports.

    What sectoral trade-offs emerge with PNG expansion?

    1. Fertiliser Sector: ~30% natural gas currently used; critical for urea production.
    2. Power Sector: ~13% allocation; ensures grid stability.
    3. Industrial Use: ~35% gas consumption in refineries and industries.
    4. Reallocation Challenge: Household consumption increase may require diversion from industrial sectors.
    5. Policy Implication: Balancing sectoral demand becomes critical. 

    Conclusion

    India’s push for PNG represents a systemic transformation in household energy consumption, driven by infrastructure expansion and import substitution goals. However, structural challenges such as pipeline connectivity, sectoral allocation, and domestic production constraints limit its immediate scalability. The success of PNG expansion depends on synchronized development of infrastructure, policy support, and demand-side adaptation.

    PYQ Relevance

    [UPSC 2018] Access to affordable, reliable, sustainable and modern energy is the sine qua non to achieve Sustainable Development Goals (SDGs). Comment on the progress made in India in this regard.

    Linkage: It highlights India’s transition towards cleaner fuels like PNG as part of ensuring affordable, reliable, and sustainable household energy access. It links directly to energy infrastructure expansion (CGD networks, pipelines) and reducing LPG import dependence within the SDG framework.

  • CSIR Develops Bio Bitumen: Turning Farm Residue into Roads

    Why in the News? 

    The Council of Scientific and Industrial Research (CSIR) transferred Bio Bitumen Technology that converts farm residue into road construction material, promoting sustainable infrastructure and reducing stubble burning.

    What is Bio Bitumen

    • Bio bitumen:
      • Renewable alternative to petroleum based bitumen
      • Made from agricultural biomass
      • Used in road construction
    • Developed by:
      • CSIR Central Road Research Institute (CRRI)
      • CSIR Indian Institute of Petroleum (IIP)

    How Bio Bitumen is Made

    • Raw Material: Crop residue, Agricultural biomass, and Farm waste
    [2025] Consider the following statements: Statement I: Circular economy reduces the emissions of greenhouse gases. Statement II: Circular economy reduces the use of raw materials as inputs. Statement III: Circular economy reduces wastage in the production process. Which one of the following is correct in respect of the above statements? (a) Both Statement II and Statement III are correct and both of them explain Statement I (b) Both Statement I and Statement II are correct and Statement I explains Statement II (c) Only one of the Statements II and III is correct and that explains Statement I (d) Neither Statement II nor Statement III is correct

  • IRDAI Approves Ind AS Framework for Insurers From April 1, 2026

    Why in News

    The Insurance Regulatory and Development Authority of India (IRDAI) has approved Indian Accounting Standards (Ind AS) framework for insurers, effective April 1, 2026.

    What is Ind AS

    • Indian Accounting Standards (Ind AS):
    • Accounting rules for financial reporting
    • Based on International Financial Reporting Standards (IFRS)
    • Ensures:
      • Transparency
      • Comparability
      • Global alignment

    Who Will Follow Ind AS

    • Applicable to all insurers: Life insurance companies, General insurance companies, Standalone health insurers, and Reinsurers
    [2019] In India, which of the following review the independent regulators in sectors like telecommunications, insurance, electricity, etc.?
    1 Ad Hoc Committees set up by the Parliament 
    2 Parliamentary Department Related Standing Committees 
    3 Finance Commission 
    4 Financial Sector Legislative 
    5 Reforms Commission NITI Aayog 
    Select the correct answer using the code given below: 
    (a) 1 and 2 (b) 1, 3 and 4 (c) 3, 4 and 5 (d) 2 and 5

  • RBI Tightens Forex Rules, Bans Non Deliverable Rupee Contracts

    Why in the News?

    The Reserve Bank of India (RBI) has tightened foreign exchange rules and banned non deliverable rupee derivative contracts to curb speculation and stabilize the Indian rupee, which recently weakened amid West Asia conflict.

    What is Non Deliverable Derivative (NDF)

    • Non Deliverable Derivative:
      • Contract settled in cash
      • No actual currency exchange
      • Often used for speculation
    • Deliverable Derivative:
      • Actual currency exchange occurs
      • Used mainly for hedging

    Key RBI Decisions

    1. Ban on Non Deliverable Rupee Contracts

    • RBI directed Authorised Dealer (AD) banks to:
      • Stop non deliverable rupee derivative contracts
      • Applies to residents and non residents
    • Aim:
      • Reduce speculation
      • Increase transparency
      • Stabilize rupee

    2. Deliverable Contracts Allowed (With Conditions)

    Banks can offer: Deliverable forex derivatives

    But only if:

    • Used for genuine hedging purposes
    • Clients cannot hold opposite positions in non deliverable markets

    3. Documentation Requirement

    Authorised dealers can:

    • Ask for documents
    • Verify purpose of forex transactions
    • Ensure no speculative trading

    4. Ban on Rebooking of Contracts

    RBI also:

    • Prohibited rebooking of cancelled forex contracts
    • Applies to:
      • Deliverable contracts
      • Non deliverable contracts
    • Purpose: Prevent misuse and speculative loopholes

    5. Restrictions on Related Party Transactions

    • Banks cannot undertake forex derivatives with related parties
    • Definition based on: Ind AS 24 and IAS 24
    • What is Ind AS 24
      • Ind AS 24 is Indian Accounting Standard 24 that deals with Related Party Disclosures in financial statements.
      • Issued by: Ministry of Corporate Affairs and Based on International Accounting Standards
    • What is IAS 24
      • IAS 24 is International Accounting Standard 24 issued by:
      • International Accounting Standards Board (IASB)
    [2019] Which one of the following is not the most likely measure the Government/ RBI takes to stop the slide of Indian rupee? (a) Curbing imports of non-essential goods and promoting exports. (b) Encouraging Indian borrowers to issue rupee denominated Masala Bonds. (c) Easing conditions relating to external commercial borrowing. (d) Following an expansionary monetary policy.

  • Rajya Sabha Passes CAPF Bill Amid Opposition Walkout

    Why in the News?

    The Rajya Sabha passed the Central Armed Police Forces (General Administration) Bill, 2026, while the Opposition staged a walkout alleging that their concerns were not addressed.

    What are Central Armed Police Forces (CAPFs)

    CAPFs under Ministry of Home Affairs:

    • CRPF (Central Reserve Police Force)
    • BSF (Border Security Force)
    • CISF (Central Industrial Security Force)
    • ITBP (Indo Tibetan Border Police)
    • SSB (Sashastra Seema Bal)
    • Assam Rifles (operational control with Army)

    Key Objective of the CAPF Bill

    The Bill aims to:

    • Create umbrella administrative structure
    • Remove inconsistencies in service rules
    • Improve cadre management
    • Streamline appointments and promotions
    • Improve coordination with state police

    Government stated:

    • It will strengthen national security
    • Boost efficiency and morale of forces

    Why Government Introduced the Bill

    Over time:

    • CAPFs developed different service rules
    • Lack of clarity in: Promotions, Appointments, Deputation, and Cadre management
    • The Bill aims to standardise administration.

    Opposition’s Concerns

    Deputation Issue

    • Institutionalising IPS officers’ deputation
    • May affect career progression of CAPF officers
    [2023] With reference to Home Guards, consider the following statements: 1 Home Guards are raised under the Home Guards Act and Rules of the Central Government. 2 The role of the Home Guards is to serve as an auxiliary force to the police in maintenance of internal security. 3 To prevent infiltration on the international border/coastal areas, the Border Wing Home Guards Battalions have been raised in some States. How many of the above statements are correct? (a) Only one (b) Only two (c) All three (d) None

  • [1st April 2026] The Hindu Oped: Counting people is not counting disaster risk

    PYQ Relevance[UPSC 2019] Vulnerability is an essential element for defining disaster impacts and its threat to people. How and in what ways can vulnerability to disasters be characterized? Discuss different types of vulnerability with reference to disasters.Linkage: The PYQ tests core concepts of vulnerability, exposure, and disaster risk assessment, which form the foundation of GS-3 Disaster Management. The article directly critiques flawed vulnerability measurement (income-based proxy), reinforcing the need for multidimensional vulnerability assessment as demanded in the PYQ.

    Mentor’s Comment

    There is a critical flaw in India’s disaster financing architecture, the shift from risk-based assessment to population-based allocation. The issue is in the news due to concerns over the 16th Finance Commission’s disaster risk funding formula, which paradoxically allocates higher funds to States with larger populations rather than those with greater disaster exposure. This marks a sharp departure from earlier approaches and undermines decades of progress in disaster preparedness. The scale of the problem is significant, States like Odisha, with the highest hazard score (12), receive less effective consideration than States like Bihar (224.2) and Uttar Pradesh (413.2) due to population weighting.

    What structural flaw exists in the disaster funding formula?

    1. Multiplicative Risk Formula: Uses Disaster Risk Index (DRI = Hazard × Exposure × Vulnerability), but distorts outcomes due to flawed exposure metrics.
    2. Population-Based Exposure: Defines exposure as total population (scaled 1-25), ignoring actual hazard-prone zones.
    3. Bias Toward Larger States: Ensures States like Uttar Pradesh receive higher weight despite lower hazard intensity.
    4. Departure from Previous Approach: Replaces additive model of 15th Finance Commission, which treated hazard and vulnerability separately.
    5. Outcome Distortion: Rewards demographic size rather than disaster risk, contradicting risk-based allocation principles.

    Why is ‘exposure’ measurement scientifically flawed?

    1. Incorrect Definition: Uses total population instead of hazard-zone population.
    2. IPCC Standard Ignored: Defines exposure as people in hazard-prone areas, not administrative boundaries.
    3. Misleading Comparisons: Inland plateau populations treated equal to cyclone-prone coastal populations.
    4. Example: Odisha’s high-risk coastline equated with safer inland regions in other States.
    5. Result: Artificial inflation of exposure scores for populous but less vulnerable States.

    How does vulnerability measurement misrepresent actual risk?

    1. Income-Based Proxy: Uses per capita NSDP, which measures fiscal capacity, not vulnerability.
    2. Multidimensional Nature Ignored: Overlooks housing quality, health infrastructure, and early warning access.
    3. Kerala Case Study: Despite ₹31,000 crore flood damages (2018), receives low vulnerability score (1.073).
    4. Hidden Inequality: Average income masks intra-state disparities and disaster susceptibility.
    5. Outcome: Underestimates real vulnerability in disaster-prone but relatively richer States.

    Why does the formula penalize disaster-prone States?

    1. Population Bias: Prioritizes demographic size over risk intensity.
    2. Funding Paradox: Odisha (highest hazard score) loses out due to lower population score.
    3. Disproportionate Allocation: Bihar (224.2) and UP (413.2) overshadow Odisha despite lower hazard exposure.
    4. Kerala’s Loss: Loses 0.78 percentage points despite high vulnerability ranking.
    5. Systemic Inequity: Smaller, disaster-prone States receive inadequate fiscal support.

    What are the implications for disaster governance in India?

    1. Misallocation of Resources: Funds diverted away from high-risk zones.
    2. Reduced Preparedness: States with higher hazard exposure face fiscal constraints.
    3. Climate Risk Escalation: Cyclones, floods, and droughts increasing in intensity and frequency.
    4. Regional Inequality: Coastal and northeastern States disproportionately affected.
    5. Policy Credibility Issue: Undermines objective of risk-based disaster financing.

    What reforms are required in disaster risk assessment?

    1. Hazard-Zone Mapping: Measures exposure based on population in disaster-prone areas.
    2. Composite Vulnerability Index: Includes housing, health, agriculture, and infrastructure indicators.
    3. Use of Data Systems: Integrates Building Materials and Technology Promotion Council (BMTPC) Vulnerability Atlas, National Family Health Survey-5 (NFHS-5), Pradhan Mantri Fasal Bima Yojana (PMFBY) database, National Health Mission (NHM) facility surveys, and India Meteorological Department (IMD) monitoring records. 
    4. Institutional Mechanism: Mandates NDMA to publish annual State Disaster Vulnerability Index.
    5. Policy Continuity: Institutionalizes methodology across Finance Commissions. 

    Conclusion

    A population-based approach to disaster funding undermines the principle of risk-sensitive governance. A shift toward hazard-specific exposure mapping and multidimensional vulnerability assessment is essential to ensure equitable and effective disaster resilience in India.