Overview

Previous Year UPSC-CSE Questions By the end you will be able to draft model answers for the following UPSC questions. Each question carries a collapsible framework showing how to approach it in the exam.

  1. UPSC Mains 2016 GS-IIIDiscuss India's achievements in the field of Space Science and Technology. How the application of this technology has helped India in its socio-economic development?
    How to structure the answer in the exam

    Directive verb: Discuss · Approach: First list the achievements, then explain each development application.

    Introduction: State that India is a leading space power and that its space technology serves development directly.

    Body (sub-themes to develop):

    • Achievements: ISRO since 1969, PSLV and GSLV, Chandrayaan and the Mars Orbiter Mission at low cost.
    • Communication satellites carry television, telephony and broadband to remote regions.
    • Remote sensing supports agriculture, water, land and forest management.
    • Weather and disaster satellites give cyclone and flood warnings that save lives.
    • Navigation, tele-education and telemedicine extend services and inclusion to villages.

    Conclusion: Conclude that India's space achievements are valuable mainly because they translate into broad socio-economic gains.

  2. UPSC Mains 2014 GS-IIIScientific research in Indian universities is declining because a career in science is not as attractive as are business professions, engineering or administration, and the universities are becoming consumer oriented. Critically comment.
    How to structure the answer in the exam

    Directive verb: Critically comment · Approach: Agree in part, give reasons for the decline, then add the fuller picture and remedies.

    Introduction: Accept that university research faces real problems, while noting it is part of a wider research system.

    Body (sub-themes to develop):

    • Low overall R&D spending and few researchers per million people limit university science.
    • Better-paid careers in business, engineering and administration pull talent away from science.
    • Research is concentrated in national laboratories rather than in universities.
    • Consumer-oriented, teaching-heavy universities under-invest in original research.
    • Remedies: more research funding, industry-academia links and a stronger research culture.

    Conclusion: Conclude that the decline is real but reversible through funding, incentives and stronger research culture.

The role of science and technology in India's development refers to the way research and innovation, delivered through specialised institutions such as ISRO, the Department of Atomic Energy, DRDO, ICAR, ICMR and the Department of Biotechnology, raise agricultural and industrial output, improve health, education and defence, and power the digital economy. Landmarks include the Green Revolution, the space programme and the three-stage nuclear programme, guided by national science policies from 1958 onward.

Science, technology and national development

How science and technology drive national development

Science and technology are central to the development of a modern nation. They raise agricultural and industrial output, improve health and education, strengthen defence, and create the high-skill jobs on which a growing economy depends.

Why it matters for India is that a large, developing country must feed, employ and protect over a billion people with limited resources. Investing in research and innovation lets the country solve its own problems, reduce dependence on imports, and compete in a knowledge-driven world economy.

What is the significance of science and technology for India is that it converts knowledge into capability: better seeds and medicines, reliable communication and power, and modern weapons. This is why successive governments have built a wide network of research institutions and issued national science policies.

India's science and technology institutional architecture

India runs science through a set of specialised departments and councils, each owning a domain. The Department of Science and Technology funds and coordinates research, while the Council of Scientific and Industrial Research runs a chain of national laboratories for industrial and applied science.

Government of India: science departments and councils(Ministry of Science and Technology and allied departments)DSTfunds and coordinates researchCSIRchain of national R&D labsDept of Space (ISRO)space research and launchesDAEatomic energy programmeDRDOdefence researchICARagricultural researchICMRmedical researchDBTbiotechnologyIndia’s science and technology architectureThe departments and councils that run national researchFigure 1. India’s science and technology institutional architecture.A specialised department or council drives each scientific domain.Digitally LearnCopyright (c) 2026. All Rights Reserved.

Mission areas have their own bodies: the Department of Space (with ISRO) for space, the Department of Atomic Energy for nuclear science, and the Defence Research and Development Organisation for military technology. The Indian Council of Agricultural Research, the Indian Council of Medical Research and the Department of Biotechnology lead farming, health and biotech research.

Space technology and national development

ISRO and India's achievements in space

The Indian Space Research Organisation, founded in 1969 and working under the Department of Space, is the flagship of Indian science. It built reliable launch vehicles, the PSLV for remote-sensing satellites and the GSLV for heavier payloads, giving India an independent route to orbit.

1969ISRO foundednational space agency2009Chandrayaan-1water ice found on Moon2013Mars Orbiter MissionMars on the first attempt2019Chandrayaan-2lunar orbiter missionFrom a young agency in 1969 to interplanetary missions in five decades.Milestones of India’s space programmeHalf a century from founding to interplanetary reachFigure 2. Milestones of India’s space programme.ISRO’s progress from 1969 to lunar and Mars missions.Digitally LearnCopyright (c) 2026. All Rights Reserved.

Its deep-space missions drew global attention. Chandrayaan-1 detected water ice on the Moon in 2009, the Mars Orbiter Mission of 2013 made India the first country to reach Mars orbit on its first attempt, and Chandrayaan-2 followed in 2019, all achieved at remarkably low cost.

Space technology applications for socio-economic development

The real value of space technology lies in its everyday applications. Communication satellites carry television, telephony and broadband to remote regions, while remote-sensing satellites map crops, water bodies, forests and minerals to guide planning.

Communicationtelevision, telephony, broadbandRemote sensingcrops, water, land and forestsNavigationpositioning and timing servicesWeather and disastercyclone and flood warningsTele-educationclassrooms in remote areasTelemedicinespecialist care at a distanceSpace technology for socio-economic developmentHow satellites reach citizens on the groundFigure 3. Space technology applications for development.Satellites deliver communication, mapping, warnings and services.Digitally LearnCopyright (c) 2026. All Rights Reserved.

Satellites also save lives and widen access. Weather and disaster satellites give early warning of cyclones and floods, navigation services support transport and timing, and tele-education and telemedicine bring teachers and specialist doctors to villages, turning space science into direct social and economic gains.

Atomic energy and defence technology

Atomic energy and the three-stage nuclear programme

The Department of Atomic Energy, set up in 1954 with Homi Bhabha as its architect and placed under the Prime Minister, leads India's nuclear effort. Nuclear science supplies electricity, and its radioisotopes are used in medicine, agriculture and industry.

Stage 1Pressurised heavywater reactorsnatural uranium, makes plutoniumStage 2Fast breederreactorsplutonium and thorium, breeds U-233Stage 3Thorium-basedreactorsuses India’s large thorium reservesIndia’s three-stage nuclear power programmeA staged path from uranium to abundant thoriumFigure 4. India’s three-stage nuclear power programme.Each stage feeds the next, ending with thorium reserves.Digitally LearnCopyright (c) 2026. All Rights Reserved.

India follows a distinctive three-stage programme designed around its resources. Pressurised heavy water reactors use natural uranium and produce plutonium; fast breeder reactors then use plutonium with thorium; and the final stage runs on India's large thorium reserves, aiming at long-term energy security.

Defence research and the drive for self-reliance

Defence technology is the other strategic pillar. The Defence Research and Development Organisation, formed in 1958, develops missiles, radars, armour and other systems so that India does not depend wholly on foreign suppliers for its security.

Indigenous defence research feeds the wider goal of self-reliance. Home-grown technology saves scarce foreign exchange, builds a domestic industrial base, and reduces the risk that supplies are cut off during a crisis, which is why defence and dual-use research receive sustained state support.

Agriculture, health and biotechnology

The Green Revolution and agricultural science

The clearest example of science transforming development is the Green Revolution, which began in the 1960s. Led by the agricultural scientist M. S. Swaminathan, often called the father of the Green Revolution in India, and drawing on Norman Borlaug's work, it introduced high-yielding varieties of wheat.

Better seeds, fertilisers and irrigation, especially in Punjab, Haryana and Western Uttar Pradesh, sharply raised output and made the country self-sufficient in food grains. The Indian Council of Agricultural Research continues this work today, developing improved crops and farming methods across the country.

Medical research and biotechnology

Science also drives India's health and biotechnology gains. The Indian Council of Medical Research is the apex body for medical research, while the Department of Biotechnology, created in 1986 under the Ministry of Science and Technology, promotes modern biology.

These efforts underpin India's strength as a maker of low-cost vaccines and generic medicines for the world. Biotechnology is applied to better crops, diagnostics and biopharmaceuticals, linking laboratory research directly to public health and to the incomes of farmers and patients.

Digital technology, science policy and the road ahead

Information technology and the digital economy

Information technology turned India into a global software and services hub, earning foreign exchange and employing millions of skilled workers. The same digital tools now power governance through online identity, payments and the delivery of public services.

Digital technology also widens financial and social inclusion. Mobile networks, low-cost data and digital payments reach citizens who were once outside the formal economy, showing how a frontier technology can rapidly change everyday life and broaden opportunity.

Science policy, research and development spending and the challenges

India has guided its science through four national policy documents, from the Scientific Policy Resolution of 1958 to the Science, Technology and Innovation Policy of 2013, each widening the goals of research and innovation.

National policy document Year
Scientific Policy Resolution 1958
Technology Policy Statement 1983
Science and Technology Policy 2003
Science, Technology and Innovation Policy 2013

Yet serious gaps remain. India spends a comparatively small share on research, with output of about US$17.2 billion in 2020-2021, and has only around 140 researchers per million people against far higher figures abroad, which holds back home-grown innovation.

Much research is also concentrated in national laboratories rather than universities, where science careers compete poorly against business and engineering. Closing these gaps, through more funding, stronger industry-academia links and a healthier research culture, is the central challenge for the years ahead.

How science and technology appear in the UPSC exam

Science and technology for development in GS Paper III

Science and technology is a core GS Paper III theme, usually framed around how research drives development. The high-yield points are clear.

  • Specialised bodies run each domain: DST, CSIR, ISRO, DAE, DRDO, ICAR, ICMR and DBT.
  • ISRO (founded 1969) and its applications link space science to everyday development.
  • The Green Revolution made India self-sufficient in food grains.
  • Low R&D spending and weak university research are the main challenges.

A strong answer pairs concrete achievements with their development impact, then assesses the gaps in funding and research culture, the analytical balance this article builds throughout its sections.

Prelims MCQ practice

Each question below tests one specific concept on the topic. Click to reveal the answer and a full option-wise explanation.

Q1. The Indian Space Research Organisation (ISRO) functions under which of the following?

  1. Department of Science and Technology
  2. Department of Space
  3. Department of Atomic Energy
  4. Ministry of Defence
Show answer and explanation

Answer: Department of Space

Explanation.

ISRO, founded in 1969, works under the Department of Space. The DST, DAE and Ministry of Defence oversee other domains. Hence (b).

Q2. The Mars Orbiter Mission (Mangalyaan) is notable because India became the:

  1. First country to land on Mars
  2. First country to reach Mars orbit on its first attempt
  3. First country to send humans to Mars
  4. First country to orbit the Moon
Show answer and explanation

Answer: First country to reach Mars orbit on its first attempt

Explanation.

The Mars Orbiter Mission of 2013 made India the first country to reach Mars orbit on its very first attempt. Hence (b).

Q3. With reference to India's three-stage nuclear power programme, consider the following statements:

  1. The first stage uses pressurised heavy water reactors fuelled by natural uranium.
  2. The final stage is designed to use India's large thorium reserves.
  3. The programme is run by the Department of Atomic Energy.

Which of the statements given above is/are correct?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3
Show answer and explanation

Answer: 1, 2 and 3

Explanation.

All three statements are correct: the first stage uses pressurised heavy water reactors on natural uranium, the final stage targets thorium, and the programme is run by the DAE. Hence (d).

Q4. Who is often called the 'Father of the Green Revolution in India'?

  1. Norman Borlaug
  2. Homi Bhabha
  3. M. S. Swaminathan
  4. Vikram Sarabhai
Show answer and explanation

Answer: M. S. Swaminathan

Explanation.

The agricultural scientist M. S. Swaminathan led the Green Revolution in India and is called its father. Norman Borlaug led the global effort. Hence (c).

Q5. The Department of Atomic Energy was established in 1954 with which scientist as its architect?

  1. Vikram Sarabhai
  2. Homi Bhabha
  3. C. V. Raman
  4. Satyendra Nath Bose
Show answer and explanation

Answer: Homi Bhabha

Explanation.

The Department of Atomic Energy was set up in 1954 with Homi Bhabha as its architect, under the Prime Minister. Hence (b).

Q6. Consider the following statements about India's science and technology institutions:

  1. The CSIR runs a chain of national laboratories for industrial and applied research.
  2. The Department of Biotechnology was created in 1986.
  3. The DRDO is responsible for civilian space launches.

Which of the statements given above is/are correct?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3
Show answer and explanation

Answer: 1 and 2 only

Explanation.

Statements 1 and 2 are correct. Statement 3 is wrong: civilian space launches are ISRO's role, not the DRDO's. Hence 1 and 2 only.

Sources and Further Reading

Editorial Disclaimer

This article explains the role of science and technology in India's development for UPSC preparation, drawing on official institutions and standard references. Figures and dates reflect the cited authorities.