Select correct statements:

Options

A. A real gas can be liquified at critical temperature
B. Critical pressure is the maximum pressure at which a substance is present in its liquid state at `T_(C)`
C. Ideal gas can be liquified below `T_(C)`
D. Critical volume is the molar volume of substance in gaseous state at `T_(C)` and `P_(C)`

Answer

a,d

Explanation

(a,d) Critical pressure is the minimum pressure at which substance convert into liquid state at critical point.