Q. Consider the following statements with reference to “Cryogenic Engine”:
1.It uses propellants at extremely low temperatures.
2.CE-20 is the first Indian cryogenic engine to feature a gas-generator cycle.
3.A cryogenic engine uses liquid nitrogen and carbon as a fuel.
Which of the statements given above are correct?

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: A
Notes:

Explanation –

Statement 1 and 2 are correct. Cryogenic Engine is a very complex system due to its use of propellants at extremely low temperatures. CE-20 is the first Indian cryogenic engine to feature a gas-generator cycle.

Statement 3 is incorrect. A cryogenic engine uses liquid oxygen and liquid hydrogen as fuel.

Source: ForumIAS

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