Question

how do we liqueify the gases

Answer 1

Answer:

Liquefaction of gases is the process by which substances in their gaseous state are converted to the liquid state. When pressure on a gas is increased, its molecules closer together, and its temperature is reduced, which removes enough energy to make it change from the gaseous to the liquid state.

Answer 2

To liquefy a gas we need to bring the gas molecules together very close to each other. This is achieved by compressing them using high pressures. At very high pressures, the boiling point of the liquid rises. So at practically achievable temperatures, the gases can liquefy and exist as liquids.