Cryogenic fuels are in _________ state at room temperature and pressure.
A. gaseous
B. liquid
C. solid
D. none
Answer:A
Cryogenic fuels are in _________ state at room temperature and pressure.
A. gaseous B. liquid C. solid D. none
Explanation: Cryogenic fuels are in a gaseous state at room temperature and pressure. Cryogenics work under low temperatures and when temperature is changed to room temperature then phase transfer takes place.