UPSC Mains – Science & Tech Most Important 100 Topics UPSC 2022 Lecture 1 – Free PDF Download



Before We Begin

  • Golden Words
    • Approach to Paper – 20 Questions?
    • Start Big – 15 Markers
    • Time Management – Think before you Ink


  • 2021
    1. How is S-400 air defence system technically superior to any other system presently available in the world? (10)
    2. How and to what extent would micro-irrigation help in solving India’s water crisis ? (10)
    3. What are the research and developmental achievements in applied biotechnology? How will these achievements help to uplift the poorer sections of the society? (15)
    4. The Nobel Prize in Physics of 2014 was jointly awarded to Akasaki, Amano and Nakamura for the invention of Blue LEDs in 1990s. How has this invention impacted the everyday life of human beings ? (15)


  • 2020
    1. What do you understand by nanotechnology and how is it helping in health sector? (10)
    2. How is science interwoven deeply with our lives? What are the striking changes in agriculture triggered off by the science-based technologies? (10)
    3. Discuss different types of cybercrimes and measures required to be taken to fight the menace. (10)
    4. COVID-19 pandemic has caused unprecedented devastation worldwide. However, technological advancements are being availed readily to win over the crisis. Give an account of how technology was sought to aid management of the pandemic. (15)


  • 2019
    1. How was India benefitted from the contributions of Sir M. Visvesvaraya and Dr. M. S. Swaminathan in the fields of water engineering and agricultural science respectively? (10)
    2. What is India’s plan to have its own space station and how will it benefit our space programme? (10)
    3. What is CyberDome Project? Explain how it can be useful in controlling internet crimes in India. (10)
    4. How can biotechnology help to improve the living standards of farmers? (15)


  • 2018
    1. Discuss the work of ‘Bose-Einstein Statistics’ done by Prof. Satyendra Nath Bose and show how it revolutionized the field of Physics. (10)
    2. Why is there so much activity in the field of biotechnology in our country? How has this activity benefitted the field of biopharma? (15)
    3. With growing energy needs should India keep on expanding its nuclear energy programme? Discuss the facts and fears associated with nuclear energy. (15)


  • 2017
    1. Stem cell therapy is gaining popularity in India to treat a wide variety of medical conditions including leukaemia, Thalessemia, damaged sornea and several burns. Describe briefly what stem cell therapy is and what advantages it has over other treatments? (10)
    2. India has achieved remarkable successes in unmanned space missions including the Chandrayaan and Mars Orbiter Mission, but has not ventured into manned space mission, both in terms of technology and logistics? Explain critically (10)
    3. Give an account of the growth and development of nuclear science and technology in India. What is the advantage of fast breeder reactor programme in India? (15)


  • 2016
    1. What is allelopathy? Discuss its role in major cropping systems of irrigated agriculture. (12.5)
    2. Discuss 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? (12.5)
    3. Why is nanotechnology one of the key technologies of the 21st century? Describe the salient features of Indian Government’s Mission on Nanoscience and Technology and the scope of its application in the development process of the country. (12.5)


  • 2015
    1. What do you understand by “Standard Positioning System” and “Precision positioning system” in the GPS era? Discuss the advantage India perceives from its ambitious IRNSS programme employing just seven satellites. (12.5)
    2. Discuss the advantage and security implication of cloud hosting of servers vis-a-vis in house machine based hosting for government business. (12.5)
    3. What are the areas of prohibitive labour that can be sustainably managed by robots? Discuss the initiatives that can propel the research in premier research institutes for substantive and gainful innovation. (12.5)

Our Observation

  • GS Paper III is scoring
  • 40-45 Marks from S&T
  • Focus on Current Affairs
  • Be ready for surprises

Our Focus Areas

  1. Biotechnology
  2. Nanotechnology
  3. Information & Communication Tech
  4. Space Tech
  5. Defence Tech




Science and Tech | Free PDF