Question

Liquification of gaseous substances whose critical temperatures are below room temperature requires ____.

• A. High pressure and lowering of temperature (below $T_C$).
• B. Low pressure and raising of temperature (above $T_C$).
• C. High pressure and raising of temperature (above $T_C$).
• D. Low pressure and lowering of temperature (below $T_C$).

Answer 1

The correct option is A

High pressure and lowering of temperature (below $T_C$).

Liquification of gaseous substances whose critical temperatures are below room temperature requires high pressure and its temperature should be below the critical temperature.The temperature beyond T_c do not yield satisfactory results.