Which of the following statements are correct ?

Options

A. It is not possible to compress a gas at a temperature below `T_(C)`
B. At a temperature below `T_(C)` the molecules ar close enough for the attractive forces to act, and condensation occurs
C. No condensation takes place above `T_(C)`
D. Due to higher kinetic energy of the gas molecules above `T_(C)`, it is considered as super critical fluid

Answer

b,c,d

Explanation

(b,c,d)
`T_(c)` is a temperature above which a gas can not be liquified at this point, slope of P - V curve is maximum and attraction force is dominating at this point. Both liquid vapour are exist in equilibrium.