Prelims Nuggets

RoDTEP Scheme Extended till March 2026

Context: The Government of India has extended the Remission of Duties and Taxes on Exported Products (RoDTEP) Scheme until March 31, 2026, ensuring continued support to exporters amidst global trade challenges.

About the RoDTEP Scheme

Launched: January 1, 2021 (through amendment in Foreign Trade Policy 2015–20).
Objective: To neutralize the impact of non-refundable taxes, duties, and levies embedded in exported goods.
Why Needed: Exporters incur costs such as state levies, power duties, mandi taxes, and embedded central taxes, which were not refunded earlier.
WTO-Compliant: Replaced the Merchandise Export Incentive Scheme (MEIS) after it was challenged by the US at WTO.
Administered By: Department of Revenue, Ministry of Finance.

Key Features

Coverage:
- All sectors eligible.
- Priority given to labour-intensive sectors (textiles, agriculture, leather, etc.).
- Applies to manufacturer exporters, merchant exporters (traders), SEZ units, EOUs, and e-commerce exports.
Exclusions:
- Re-exported products not eligible.
Reimbursement Mechanism:
- Provided as a percentage of FOB (Freight on Board) value of exports.
- Issued in the form of transferable e-scrips (maintained in CBIC’s electronic credit ledger).
- e-scrips can be used for paying basic customs duty or transferred to other importers.
Digital Implementation:
- Entirely IT-driven to ensure transparency, speedy clearance, and minimal human intervention.
- Monitored via IT-based risk management system with audit provisions.

Significance

Reduces hidden tax burden on exporters.
Enhances global competitiveness of Indian goods.
Encourages manufacturing and promotes “Make in India” exports.
Helps India remain aligned with WTO norms while protecting domestic industry.

Way Forward

With the scheme extended till 2026, exporters now have policy certainty.
Government focus is likely to remain on simplification of refunds, expansion of product coverage, and ensuring quick digital disbursements to sustain India’s export momentum.

India’s Bid for Fully Reusable Rockets

Context: Chennai-based spacetech startup Agnikul Cosmos has announced that its upcoming rockets will be fully reusable, ensuring no component is discarded. This aligns with the International Astronautical Congress (IAC) 2025 theme: “Sustainable Space: Resilient Earth.”

Key Highlights

Agnikul’s Vision: To offer globally competitive small-satellite launch services with complete reusability.
Technology Achievements:
- Successfully tested 3D-printed sub-orbital rocket Agnibaan SOrTeD (2024).
- Plans for orbital launches with reusability.
Support Mechanism: Backed by IN-SPACe, which provides policy and technical support.
Focus Areas: Cost efficiency, scalability, and compliance with space debris mitigation.

Reusable Launch Vehicles (RLVs)

Definition: A rocket system that can be launched, recovered, and reused multiple times. Unlike expendable rockets, RLVs ensure controlled re-entry and reduce space junk.
Advantages:
- Cuts down launch costs.
- Minimizes space debris, mitigating risks like the Kessler Syndrome (cascading orbital collisions).
- Enhances sustainability of global space missions.

India’s Efforts in RLVs

ISRO Milestones:
- RLV-TD HEX-01 (2016): Demonstrator flight for re-entry.
- RLV LEX Series (2024): Autonomous landing tests.
- PUSHPAK Mission: Ongoing experimental reusability projects.
Agnikul’s Initiative: Complements ISRO’s programmes by targeting commercial small-satellite launches.

Global Context

SpaceX (USA): Falcon 9, Falcon Heavy — world leaders in reusable rockets.
China: Long March 8 with partial reusability.
India’s Entry: Aims to position itself as a sustainable, affordable, and competitive space launch hub.

Significance

Strengthens India’s Atmanirbhar Bharat vision in space technology.
Encourages startups–ISRO collaboration, expanding the private space ecosystem.
Demonstrates India’s commitment to sustainable space exploration and debris-free orbits.

Laser Interferometer Lunar Antenna (LILA)

Context: Scientists have proposed the Laser Interferometer Lunar Antenna (LILA) as a next-generation project to detect gravitational waves directly from the Moon’s surface.

What is an Interferometer?

An interferometer is a precision instrument that uses the interference of light waves to measure extremely small changes in distance. This principle is used in gravitational-wave detection.

About LILA

Objective: Detect mid-frequency gravitational waves (0.1–10 Hz), a range inaccessible to Earth-based LIGO or space-based LISA.
Lead Institution: Vanderbilt Lunar Labs, USA, in collaboration with global partners.
Design: Network of lunar interferometers placed on the Moon’s surface.
Significance: Fills the “decihertz gap” in the gravitational-wave spectrum.

Developmental Phases

Pioneer Phase:
- Robotic deployment of an interferometer with 3–5 km arms.
- Test of mid-band sensitivity and new technologies.
Horizon Phase:
- Construction of a triangular array with 40 km-long arms.
- Astronaut-led assembly using quantum sensors and advanced seismic isolation.

Why the Moon?

Vacuum Advantage: No atmosphere to distort laser signals.
Low Seismic Noise: The Moon has fewer vibrations than Earth.
No Newtonian Noise: Absence of oceans and large mass movements reduces disturbances.

Scientific Significance

Complements LIGO & LISA: Bridges the gap in the gravitational-wave spectrum.
Astrophysical Breakthroughs: Enables study of intermediate-mass black holes and exotic cosmic events.
Lunar Science: Provides insights into the Moon’s deep interior, aiding 3D geophysical mapping.

Conclusion

If realized, LILA will revolutionize astrophysics, enabling humanity to observe parts of the universe never seen before. Its lunar placement could make it the quietest and most sensitive gravitational-wave detector ever built, marking a leap forward in space science.

PM E-DRIVE Scheme: Boosting India’s EV Transition

Context: The Ministry of Heavy Industries (MHI) has released operational guidelines for the PM E-DRIVE (Electric Drive Revolution in Innovative Vehicle Enhancement) scheme, a flagship initiative to accelerate India’s electric mobility transition.

About PM E-DRIVE Scheme

Launched in October 2024, the scheme has a financial outlay of ₹10,900 crore and is effective till March 2026, with certain components extended till March 2028. It builds on earlier initiatives such as FAME-I and FAME-II, but with a larger budget and broader scope.

Objectives

Promote adoption of electric 2-wheelers, 3-wheelers, ambulances, trucks, and buses.
Support public transport electrification to enhance mass mobility.
Establish a robust EV charging infrastructure across the country.
Encourage domestic EV manufacturing through a Phased Manufacturing Programme (PMP).
Reduce vehicular emissions and improve air quality, aligning with Aatmanirbhar Bharat.

Key Components

Demand Incentives/Subsidies:
- Upfront subsidies for purchase of EVs.
- Capped at 15% of ex-factory price or fixed limits for eligible categories.
Grants for Capital Assets:
- Acquisition of e-buses and expansion of charging infrastructure.
- Upgradation of testing facilities under MHI.
Public Charging Stations:
- Nearly 72,300 charging stations to be deployed with an outlay of ₹2,000 crore.
- BHEL as the nodal agency for demand aggregation and a Unified EV Super App for real-time tracking and payments.
Governance Mechanism:
- Implementation through Project Implementation & Sanctioning Committee (PISC) chaired by Secretary, MHI.
- Periodic review of incentives, charging infrastructure, and EV uptake.
State-Level Incentives:
- Road tax waivers, toll exemptions, and reduced parking fees encouraged.

Significance

Strengthens EV supply chain and boosts domestic manufacturing.
Supports India’s climate commitments under the Paris Agreement.
Helps reduce dependence on fossil fuels and enhances energy security.
Encourages private sector participation through Viability Gap Funding (VGF).

AstroSat Completes 10 Years of India’s Space Observatory

Context: AstroSat, India’s first dedicated multi-wavelength space observatory, launched by PSLV-C30 (XL) in 2015 from Sriharikota, has completed a decade of successful operations in 2025.

About AstroSat

Multi-Wavelength Coverage: Simultaneous observations in Visible, Ultraviolet (UV), Low-energy X-ray, and High-energy X-ray bands.
Payloads:
- Ultra Violet Imaging Telescope (UVIT)
- Large Area X-ray Proportional Counter (LAXPC)
- Cadmium–Zinc–Telluride Imager (CZTI)
- Soft X-ray Telescope (SXT)
- Scanning Sky Monitor (SSM)
Operations: Managed by Mission Operations Complex (MOX) at ISRO Telemetry, Tracking and Command Network (ISTRAC), Bengaluru.

Major Contributions & Discoveries

Provided new insights into compact celestial objects such as black holes and neutron stars.
Enabled observation of Proxima Centauri, the nearest star system to Earth.
Achieved the first detection of Far Ultraviolet (FUV) photons from galaxies 9.3 billion light-years away.
Supplied extensive data to the global astronomy community, boosting India’s role in international collaborations.

Significance

Showcased India’s ability to design, build, and operate advanced space observatories.
Strengthened India’s contribution to astrophysics and multi-wavelength astronomy.
Reinforced ISRO’s reputation in low-cost, high-impact space missions.

National Initiative on Water Security

Context: The Government of India launched the National Initiative on Water Security in New Delhi to promote sustainable water management across rural India. This initiative comes at a time when nearly 600 million Indians face high to extreme water stress (NITI Aayog, CWMI).

Key Features of the Initiative

Collaborative Effort: Jointly implemented by the Ministries of Rural Development, Agriculture & Farmers’ Welfare, and Jal Shakti.
Mandatory Water Conservation: All rural blocks must now integrate water conservation into development planning.
MGNREGA Amendments:
- 65% of funds in over-exploited blocks.
- 40% of funds in semi-critical blocks.
- 30% of funds in water-sufficient blocks.
  These allocations prioritize groundwater recharge and sustainable water use.

Achievements under MGNREGA

Employment Generation: Over 3,000 crore person-days created since 2014.
Women’s Participation: Increased from 48% (2014) to 58% (2025).
Water Assets: Built over 1.25 crore structures including ponds, tanks, and check dams.
Mission Amrit Sarovar: Over 68,000 reservoirs created/rejuvenated to improve rural water storage capacity.

Significance

India’s water crisis is intensifying due to over-extraction, climate change, and rising demand. This initiative aims to:

Recharge groundwater.
Improve rural livelihoods through water-linked employment.
Enhance agricultural sustainability.
Promote climate resilience in rural India.

The program integrates conservation with development, making water security a cornerstone of India’s rural transformation.

Uranium Mining Exemption in Meghalaya

Context: The Ministry of Environment, Forest, and Climate Change (MoEFCC) recently issued an office memorandum exempting uranium mining from mandatory public consultations. This move has reignited debates around environmental risks, indigenous rights, and federalism in India.

About Uranium

Nature: Uranium is a naturally occurring radioactive metal, primarily used as nuclear fuel.
Isotopes: Exists mainly as Uranium-238 (99.3%) and Uranium-235 (0.7%), the latter being fissile.
Reserves in India: Meghalaya holds nearly 16% of India’s uranium reserves, making it the third-largest source after Andhra Pradesh and Jharkhand.

Concerns of Local Communities

Distrust in Process: Local communities view the exemption as an attempt to bypass consent after years of resistance and failed negotiations.
Health & Environmental Risks: Fear of radiation exposure and ecological damage, drawing on lessons from Jaduguda (Jharkhand), where mining has been linked to health issues.

Constitutional & Legal Dimensions

Sixth Schedule: Grants Autonomous District Councils in tribal areas control over land and resources.
Federalism Question: Exemption undermines local authority and weakens environmental justice.
Global Norms: Contradicts the principle of Free, Prior and Informed Consent (FPIC) under the UN Declaration on the Rights of Indigenous Peoples (UNDRIP).

Strategic Dimensions

Energy Security: Uranium is vital for India’s nuclear power generation and strategic deterrence.
Self-Reliance: Reducing imports strengthens India’s nuclear independence.
Centre–State Tensions: The policy highlights conflict between national energy priorities and regional autonomy.

Significance

This exemption raises critical debates for UPSC aspirants:

Balancing energy security with environmental justice.
Navigating centre–state relations in resource governance.
Addressing tribal rights within India’s development model.

The controversy underscores the challenge of pursuing strategic minerals without compromising constitutional safeguards and ecological sustainability.

Oju Hydroelectric Project in Arunachal Pradesh

Context: The Union Environment Ministry has recommended environmental clearance for the Oju Hydroelectric Project on the Subansiri River in Arunachal Pradesh. Once operational, it will be the largest hydroelectric project in the Subansiri basin by installed capacity, significantly expanding India’s renewable energy portfolio. However, the project has sparked debates over environmental sustainability, regional biodiversity, and strategic security.

Project Details

The Oju Hydroelectric Project will be developed by Oju Subansiri Hydro Power Corporation Pvt. Ltd., located about 5 km downstream of Redi village in the Taksing block of Arunachal Pradesh.

Installed Capacity: 2,220 MW (2,100 MW from the main power plant and 120 MW from the dam-toe plant).
Scale: It is expected to be the largest project in the Subansiri basin, surpassing the capacity of other ongoing hydro projects.
Strategic Location: The project lies close to the India-China border, giving it geopolitical importance in addition to energy significance.

Concerns and Criticism

Outdated Studies: Environmental groups, particularly from Assam, have pointed out that the Cumulative Impact Assessment (CIA) and carrying capacity studies for the Subansiri basin were last conducted in 2014. Considering climate change, seismic activity, and increasing hydro pressures, these studies require urgent revision to reflect current realities.
Biodiversity and River Ecology: The Subansiri basin is ecologically sensitive, hosting diverse species of fish and supporting riparian communities in Arunachal Pradesh and Assam. Multiple hydroelectric projects on the same river may alter river flow, impact sediment transport, reduce fish populations, and threaten local livelihoods.
Geopolitical Sensitivity: Located near the India-China border, the project has strategic value for India’s control over water resources and infrastructure development in frontier areas. However, the ecological fragility of the Himalayas and the seismic risks of dam construction in this region heighten concerns.

Subansiri River: An Overview

The Subansiri River is a trans-Himalayan river that originates in the Tibetan Himalayas and is known locally as the “Gold River” due to the presence of gold dust in its riverbed.

It enters India through a deep gorge near Gerukamukh in Arunachal Pradesh.
It is the largest right-bank tributary of the Brahmaputra River, joining it in Assam’s Lakhimpur district.
Major tributaries include the Laro, Nye, Yume, Tsari, Kamla, Jiyadhol, Ranganadi, and Dikrong rivers.
The river basin supports agriculture, fishing, and hydropower projects, but faces risks from over-exploitation and frequent floods.

Significance

Energy Security: At 2,220 MW, the project will contribute substantially to India’s renewable energy targets under the National Electricity Plan.
Regional Development: It promises improved infrastructure, employment opportunities, and potential revenue for Arunachal Pradesh.
Strategic Leverage: Hydro projects in border areas strengthen India’s water resource management and presence in geopolitically sensitive zones.

Conclusion

The Oju Hydroelectric Project reflects India’s drive to expand clean energy while strengthening its presence in the Northeast. However, balancing energy needs with ecological sustainability and community welfare is crucial. Updated environmental studies, better disaster preparedness, and active consultation with downstream states like Assam will be essential to ensure that the project contributes to national development without undermining the fragile Himalayan ecosystem.

Secularism and the Mysuru Dasara Case

Context: The Supreme Court dismissed a petition challenging the Karnataka government’s decision to invite Booker Prize winner Banu Mushtaq, a Muslim, to inaugurate the Mysuru Dasara festivities.

The Court reminded the petitioner of the Preamble, which enshrines secularism, liberty of thought and faith, equality, and fraternity as core ideals of the Indian Constitution.

Relevance of the Topic: Prelims: Preamble, Article 25, landmark cases related to secularism.
Mains: Indian model of secularism.

Supreme Court’s Ruling

The Court noted that the inauguration was a State function and not a purely religious ritual, and hence no citizen could be excluded on the basis of religion.
Denying participation on religious grounds violates the Preamble’s ideals of equality and fraternity.
The Court reaffirmed the M. Ismail Faruqui (1994) case judgment,“the State has no religion of its own and must act with neutrality”

Constitutional Position on Secularism

India follows a model of secularism that ensures respect for all religions while maintaining State neutrality.

The Preamble explicitly declares India to be a secular State (42nd Amendment, 1976).
Secularism has been upheld as part of the basic structure of the Constitution in Kesavananda Bharati (1973) and S.R. Bommai (1994).
Article 25 guarantees freedom of religion while allowing the State to regulate secular activities associated with religious practice.
In R.C. Poudyal (1993), the Court observed that secularism means equal treatment of all religions without discrimination.
In Dr. Balram Singh v. Union of India (2024), the Court held that secularism allows the State to intervene to eliminate practices that impede equality and development.

The Mysuru Dasara judgment underlines that Indian secularism is not about a rigid separation of religion from the State, but about principled equidistance and equal respect for all faiths.

Also Read: What makes the Indian Constitution Secular?

RBI’s Inflation Targeting Framework and the Debate on Continuity

Context: The existing flexible inflation targeting framework of Reserve Bank of India (RBI) is set to expire in March 2026. RBI had sought views from economists, market participants and other stakeholders on whether the current target, band, and measure should continue. Most respondents back the continuation of the existing structure.

Relevance of the Topic: Prelims: Key Features of the 2015 Monetary Policy Framework.

The monetary policy framework in India has evolved over the years. From relying on multiple indicators such as money supply and wholesale prices, the RBI shifted its focus to retail inflation in 2014.

In February 2015, a new Monetary Policy Framework Agreement was signed between the Government of India and the RBI, which institutionalised inflation targeting in India.

Key Features of the 2015 Monetary Policy Framework

The primary objective of monetary policy is to maintain price stability while keeping in mind the objective of growth.
The framework is operated by the RBI, which uses instruments such as the repo rate to achieve the target.
The inflation target is fixed at 4% CPI inflation, with a tolerance band of +/-2 % (2-6%).
The inflation target is decided by the Government of India in consultation with the RBI, and is to be set once every five years. The current target has been notified till March 31, 2026.
The relevant measure of inflation is the Consumer Price Index (CPI-Combined) published by the National Statistical Office (NSO), Ministry of Statistics and Programme Implementation.
The RBI is deemed to have failed in its mandate if inflation remains above 6% or below 2% for three consecutive quarters.
In case of such failure, the RBI must submit a written report to the Government explaining the reasons for the failure, remedial measures, and the time frame within which inflation will be brought back to the target.

Role of the Monetary Policy Committee (MPC)

The MPC was constituted in 2016 as a statutory body to set the policy repo rate required to achieve the inflation target.
It comprises six members: RBI Governor (Chairperson), the Deputy Governor in charge of monetary policy, one RBI officer nominated by the RBI Board, and three external members appointed by the Government.
Decisions are taken by majority vote, with the Governor having a casting vote in case of a tie.

Performance of the Flexible Inflation Targeting (FIT) Regime (2016-2025)

Inflation has declined significantly since the adoption of FIT: from nearly 10% in 2012-13, CPI inflation is projected to average 3.1% in 2025-26, the lowest in the FIT era.
The framework has anchored inflation expectations of households and markets, thereby improving monetary policy credibility.
It has enhanced macroeconomic stability by reducing uncertainty for consumers and investors.
Low and stable inflation has supported sustainable growth, as extreme price fluctuations erode consumer purchasing power and discourage investment.
India’s adoption of FIT has brought it in line with global best practices, where most modern central banks follow inflation targeting frameworks.

Review of Flexible Inflation Targeting (FIT) Regime:

The FIT regime requires a review every five years. The current review must be completed by March 2026. The RBI’s recent discussion paper has sought comments on key issues:

Whether monetary policy should target headline inflation or core inflation.
Whether the 4% inflation target remains optimal.
Whether the tolerance band (2-6%) should be revised.
Whether the target should be a point (4%) or a range only.

Former members of the Monetary Policy Committee (MPC) are largely in favour of retaining the targets as per the existing Flexible Inflation Target (FIT) regime and want to continue to focus on keeping headline Consumer Price Index (CPI) inflation at 4% in the medium term.

Also Read: Time to Review Inflation Targeting

Blending Isobutanol with Diesel

Context: The Automotive Research Association of India (ARAI) was exploring the possibility of blending isobutanol with diesel. The move comes after the efforts to blend ethanol with diesel were unsuccessful.

Relevance of the Topic: Prelims: Isobutanol and its feasibility to blend with Diesel: Pros & Cons.

Biofuel blending in Petrol and Diesel is an important contributor to the government’s objective of scaling the net zero emission target by 2070.

Isobutanol and its feasibility to blend with Diesel

Isobutanol is a higher molecular weight alcohol with inflammable properties. It is used as a solvent in several industries, including painting.
It is produced from either thermochemical pathways (such as synthesis gas to mixed alcohols) or biochemical pathways (such as fermentation by specially designed microbes under sterile conditions).

Isobutanol Blending vs Ethanol Blending with Diesel

Studies suggest:

Isobutanol has higher energy content as compared to ethanol and is more amenable to pipeline distribution.
Isobutanol blends better with diesel compared to ethanol. There is no need to add any complement for efficiency.
Less water absorption (less hygroscopic) compared to ethanol, thus it has lower corrosion risks.
The flash point or the lowest temperature at which isobutanol yields a vapour igniting a momentary flash is higher than ethanol.
- A lower flash point was among the reasons that ethanol was not considered ideal for blending with diesel. Fuels with lower flash points are more volatile and entail a higher risk of catching fire.
Proposed blending opens avenues for the surplus ethanol production sources to be diverted to produce isobutanol. Isobutanol can be produced from the same feedstock required to produce ethanol such as sugarcane syrup and molasses and grains etc.

The proposed blend would have an impact on reducing emissions and help with import substitution.

Associated Concerns:

Isobutanol and diesel may have issues on miscibility (ability of two substances to mix to form a homogenous mixture) though it can be sorted out by mixing biodiesel to the blend. Biodiesel is the fuel manufactured from non-edible vegetable oils, used cooking oil and/or animal fat.
Isobutanol has significantly lower cetane number (measure of combustion quality) as compared to diesel (the base fuel). This would reduce the blend’s overall cetane number. This raises concerns about diesel knock which can result in reduced power and potential damage to engines.
- An ideal combustion translates to rapid ignition and the fuel combusting completely to produce the necessary energy.
- ‘Knocking’ occurs when the fuel burns unevenly and/or prematurely in the vehicle’s fuel cylinder. However, cetane value can be restored through proper additives which would entail incremental costs.

The blending paradigm is still being studied and the pilot project would take about 18 months to complete. If successful, India would be the first country to have blended isobutanol with diesel.

Also Read: What are Biofuels?

Proper studies should be initiated encompassing varied vehicle classes and types. Phased blending targets with no more than 10% blending of isobutanol should be considered.

Dadasaheb Phalke Award

Context: Renowned Malayalam actor Mohanlal is set to receive the prestigious Dadasaheb Phalke Lifetime Achievement Award for the year 2023. It will be presented during the 71^th National Film Awards ceremony and he will be the 55^th recipient of the Dadasaheb Phalke Award.

Relevance of the Topic: Prelims: Key facts about Dadasaheb Phalke Award.

About Dadasaheb Phalke Award

The Dadasaheb Phalke Award was instituted in 1969 in honour of Dhundiraj Govind Phalke, the pioneer of Indian cinema, by the Government of India.
It is India's highest award in the field of cinema.
It is presented annually at the National Film Awards ceremony by the Directorate of Film Festivals, an organisation set up by the Ministry of Information and Broadcasting.
The Directorate of Film Festivals in India, established in 1973, is responsible for organizing major film events such as the International Film Festival of India, the National Film Awards, and the Indian Panorama.
Based in New Delhi, the organization operates under the works as part of the Ministry of Information and Broadcasting.
The recipient is honoured for their ‘great and outstanding contribution to the growth and development of Indian cinema’ and is selected by a committee consisting of eminent personalities from the Indian film industry.
The award comprises a Swarna Kamal (Golden Lotus) medallion, a shawl, and a cash prize of Rs. 10 Lakh.
The first recipient of the award was actress Devika Rani (widely acknowledged as the First Lady of Indian cinema), who was honoured at the 17th National Film Awards.

About Dhundiraj Govind Phalke (April 1870 – 16 February 1944):

He was widely known as Dadasaheb Phalke and is referred to as ‘the Father of Indian cinema.’
He directed India's first full-length feature film, Raja Harishchandra, which was released in 1913, marking a significant milestone in the history of Indian cinema.
Over his 19-year career, from 1913 to 1937, Phalke produced and directed a total of 95 feature films and 27 short films.
Some of his most acclaimed works include Mohini Bhasmasur (1913), Satyavan Savitri (1914), Lanka Dahan (1917), Shri Krishna Janma (1918), and Kaliya Mardan (1919).