When a gas is allowed to expand from a region of extremly high pressure to a region of extremly low pressure, there occurs a change of temperature. This phenomenon is associated with

When H_2 gas is allowed to expand from a region of high pressure to a region of low pressure, the temperature of the gas

Assertion: When a real gas is allowed to expand adiabatically through a fine hole from a region of high presssure to a region of low pressure, the temperature of gas falls in a completely insulated container. Reason: Work is done at the cost of internal energy of the gas.

Assertion: When a real gas is allowed to expand adiabatically through a fine hole from a region of high presssure to a region of low pressure, the temperature of gas falls in a completely insulated container. Reason: Work is done at the cost of internal energy of the gas.

Fill in the Blanks : Air moves from a region of ____ pressure to a region of _____ pressure.

The region of high pressure is called as ___ and the region of low pressure is called as _____.

When a sample of an ideal gas is allowed to expand at constant temperature against an atmospheric pressure,

Which gas shows a heating effect when expanded into a region of low pressure:

Statement 1 : When hydrogen gas at high pressure and room temperature expands adiabatically into a region of low pressure, there is a decrease in temperature. Statement 2 : Hydrogen gas at room temperature is above its inversion temperature.