Question

Which property of gas is used in supplying oxygicylinders in hospital

Answer 1

Air is compressed and sent through a compartment that has a piston. The air expands in the compartment. When the air expands, the compartment increases in volume and the pressure and temperature of air is lowered. Air is liquefied by this process. The compartment is called an expansion engine. The liquid air is then boiled to remove nitrogen. The simple process of boiling is effective because nitrogen has a lower boiling point that oxygen. The liquid air that is now predominantly made up of oxygen is taken through a large insulated tank and put into the waiting oxygen cylinders. 

Answer 2

Air can be easily compressed dus large amt of air can be filled in a cylinder n supplied