Favourable conditions for the liquefaction of gases in general are _____________________?
Correct answer: C. High pressure & low temperature
- A. High pressure & high temperature
- B. Low pressure & high temperature
- C. High pressure & low temperature
- D. Low pressure & low temperature
Explanation
High pressure brings molecules closer together and low temperature reduces their kinetic energy, both favouring condensation. The temperature must also be below the gas's critical temperature for pressure alone to liquefy it.
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