R

Rakesh Yadav • 4.99K Points
Extraordinary Science

  • (A) High Temperature
  • (B) Lower Temperature
  • (C) Friction and Wear-Tear
  • (D) Increment in Crystals
Correct Answer - Option(B)

Explanation by: Rakesh Yadav
Cryogenic means Lower temperature (0°C to – 150°C) 
Engine that works at very low temperature are known as 
cryogenic engines. In these fuel is used in the form of Liquid 
Hydrogen and Liquid oxygen. This is used in the space ships and 
Launching vehicles.

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