Lesson 5. Science & Technology: Principles and National Priorities

This segment demands a focus on conceptual understanding of basic principles and their application in national projects and daily life. Core areas include Physics (space technology, nuclear technology, defense technology), Biology (biotechnology, genetics, human diseases, health & nutrition), and Information Technology (cybersecurity, AI, blockchain, robotics). The key is to link these principles to India’s achievements and initiatives: Space (ISRO’s missions like Chandrayaan-3, Aditya-L1, navigation systems), Defense (DRDO projects, missile systems, indigenization), Health (biotech missions, IPR issues, COVID-19 research), and Agriculture (GM crops, soil health card). Recent developments in emerging technologies—quantum computing, CRISPR-Cas9, 5G/6G—are high-probability areas. Preparation involves understanding the ‘what’ and ‘why’ of a tech development and its socio-economic implications. For instance, knowing the difference between a rocket’s PSLV and GSLV is as important as understanding the strategic significance of the Mission to the Moon’s south pole. Additional Resources: The website of the Principal Scientific Adviser to GoI and departmental sites (DSIR, DBT, MeitY) are invaluable. Science magazines like ‘Science Reporter’ help in simplified understanding. Annual compilations by government bodies like ISRO and DRDO detailing their milestones are extremely useful. The ‘Hindu’s fortnightly Science & Tech page’ is excellent for current updates.