UPSC Mains Science & Technology 2021 Questions with Model Answers
Every UPSC Mains Science & Technology previous year question from 2021 with a detailed model answer, diagrams, flowcharts and structured answer writing.
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How is S-400 air defence system technically superior to any other system presently available in the world?
GS310 marks2021Science & Technology
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?
GS315 marks2021Science & Technology
What are the research and developmental achievements in applied biotechnology? How will these achievements help to uplift the poor sections of the society?
GS315 marks2021Science & Technology