Which of the following statements are not correct?

Options

A. A real gas can be liquefied if its temperature is greater than its critical temperature
B. A real gas is expected to behave ideally at high temperature and low pressure
C. At constant pressure, the ratio of increase in volume of an ideal gas per degree rise in kelvin temperature to its original volume is T
D. The rate of diffusion is directly proportional to the square root of its kelvin temperature and also inversely proportional to the square root of its molar mass

Answer

B, D