For a fixed mass of a gas at constant volume, pressure rises when temperature increases,and vice versa Explain from the kinetic theory.

Explanation

When the temperature increases at constant volume the gas molecules move in the container with greater velocities. So the molecules collide with the wall with greater momenta, As a result they exert greater force on the wall and the pressure of the gas rises.
Conversely, due to the opposite behaviour of gas molecules, pressure falls with decreases in temperature at constant volume.