Science and Technology-2014: Daily Answer Writing Challenge – 24

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27 September 2014

 

Q1) “There is a growing concern over Atmospheric Brown Cloud and its impact on South Asia”. What are the causes and consequences of Atmospheric Brown Cloud?

Source-1

Source – 2

Q2) What do you understand by ‘Nuclear Umbrella’? How relevant it is in contemporary world geopolitics? Substantiate.

Source – 1

Source – 2

Q3) Write short notes on

  • OLED display
  • Spintronics
  • Wireless Energy Transfer
  • Vortex Engine