Increasing the pressure confines the gas molecules to a smaller space, thereby reducing the volume. Reducing the pressure the other way round increases the volume of a gas.

For a fixed amount of ideal gas, with temperature measured in kelvin, which statement is NOT correct under the conditions stated?

JAMB UTME

The average translational kinetic energy of its molecules is proportional to its kelvin temperature

At constant temperature, its volume increases as its pressure increases

At constant temperature, its pressure is inversely proportional to its volume

At constant pressure, its kelvin temperature is directly proportional to its volume

Collisions between its molecules are perfectly elastic

Earlier discussion