Previous Year Questions : Science and Technology [2021]

 

1. How is S-400 air defence system technically superior to any other system presently available in the world ?

2. What are the research and developmental achievements in applied biotechnology? How will these achievements help to uplift the poorer sections of the society ?

3. 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 invents impacted the everyday life of human beings?

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