Consider two gases—oxygen and nitrogen at STP. How will the kinetic energy of the gases be affected if we only increase the temperature of oxygen?
The kinetic energy of both gases will increase, and then after sometime both will have the same kinetic energy.
Oxygen will have more kinetic energy than nitrogen.
Oxygen will have less kinetic energy than nitrogen.
Initially nitrogen will have more kinetic energy, and then after sometime oxygen will have more kinetic energy.
Kinetic energy won’t be affected at all.

Increasing the temperature of oxygen requires the application of heat. The heat energy that is applied to the gas will make the particles of the oxygen gas to gain more kinetic energy and to move more rapidly than before, by so doing, the particles will colloid more with one another and with the wall of the container. The kinetic energy of the particles of the nitrogen gas will remain the same since its temperature was not affected.