Science and Technology in UPSC: Key Areas Every Aspirant Must Master
- Mohan Krishna
- Jul 13
- 2 min read
Science and Technology in UPSC: Key Areas Every Aspirant Must Master By Indus IAS Academy, Bangalore

Science and Technology (S&T) is a dynamic and high-scoring segment in the UPSC Civil Services Examination, especially in General Studies Paper III (Mains) and Prelims. It tests aspirants on their understanding of current scientific developments and their relevance to India and the world. At Indus IAS Academy, we emphasize a practical, current-affairs-driven approach to mastering this subject. Here’s a breakdown of the key areas you should focus on for UPSC preparation.
1. Space Technology
ISRO missions: Chandrayaan, Gaganyaan, Aditya-L1, etc.
Global space agencies: NASA, ESA, CNSA collaborations
Satellites: Types, applications (communication, remote sensing, navigation)
Space policies and private sector participation
2. Defence Technology
DRDO developments: Missiles (Agni, Prithvi), UAVs, radars
Strategic systems: Nuclear deterrence, Ballistic Missile Defence (BMD)
Recent deals and indigenous defence production (Make in India in Defence)
Hypersonic and AI-based warfare tech

3. Biotechnology
Genetic engineering, CRISPR, genome sequencing
Applications in agriculture (GM crops), health (vaccines, diagnostics)
Ethical issues and regulatory mechanisms (e.g., GEAC, ICMR guidelines)
India's biotechnology policy and Biotech Parks
4. Information and Communication Technology (ICT)
Developments in AI, Blockchain, Quantum Computing, 5G, Internet of Things (IoT)
Cybersecurity: CERT-In, cyber laws, threats, and data protection
Digital India, Aadhaar, e-Governance initiatives
Startups and digital innovation in India
5. Nanotechnology
Basics: Nanomaterials, properties and uses
Applications in medicine, environment, agriculture, and energy
Government schemes promoting nano R&D in India
6. Nuclear Technology
Nuclear reactors in India: Types, locations, safety aspects
India's nuclear policy: Civil nuclear agreements, NSG, IAEA safeguards
Atomic energy for development and clean energy transition
7. Energy and Environment Technology
Renewable energy: Solar, wind, tidal, hydrogen energy
India’s National Solar Mission, International Solar Alliance (ISA)
Green hydrogen and carbon capture technologies
Sustainable development goals (SDGs) and India's climate tech initiatives

8. Robotics, Drones & Autonomous Tech
Applications in agriculture, healthcare, disaster management, logistics
Policy frameworks like Drone Rules 2021
AI-based automation and its socio-economic impacts
9. Medical Science and Health Innovations
COVID-19 technologies: Vaccine development, genome sequencing
Public health innovations: Telemedicine, health apps
India's pharma and vaccine production capability
National health missions and AI in healthcare
10. Research & Development and Government Initiatives
Scientific institutions: ISRO, DRDO, CSIR, BARC, etc.
National Science, Technology, and Innovation Policy (STIP)
Budget allocations and focus areas
Role of science in Atmanirbhar Bharat
Approach to Study Science & Tech for UPSC
Focus on current affairs more than theoretical concepts
Read PIB, The Hindu, Indian Express, Science Reporter
Follow government press releases and institutional websites
Use NCERTs for basic understanding
Practice PYQs to understand the trend
Science and Technology is not just a scoring area but a reflection of how India adapts to the future. At Indus IAS Academy, we ensure that our students are not only informed but also trained to analyze S&T topics critically from a UPSC perspective. A smart approach with real-world examples and government initiatives can make this section your strength.
Stay curious. Stay updated. Crack UPSC with confidence!
Mohan Krishna M N, Indus IAS Academy
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