Which of th efollowing is/are incorrect for an ideal gas :
A. All the molecules of a gas at given temprature have same kinetic energy
B. Average knietic energy of a sample of gas molecules is proportional to `m^(1//2)`
C. Average kinetic energy of a molecule is proportional to m
D. A sample of `O_(2) (g)` initially at STP is compressed to a smaller volume at constant temperatue will increase average kinetic energy of a molecule.
