Question

Cryogenic engines find applications in __________.a ) rocket technologyb ) frost-free refrigeratorsc ) sub-marine propulsiond ) researches in superconductivity

Answer 1

The answer to this fill in the blanks will be C point that says it to be Rocket Technology.

So basically what happens like the Cryogenic engines find application mainly in the rocket technology.

This question is in relation to the Indian Institute of Technology related Joint Entrance Exam quality also.

Answer 2

Rocket  Technology

A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer (or both) are gases liquefied and stored at very low temperatures. ... At that time oxygen and low molecular weight hydrocarbons were used as oxidizer and fuel pair.