The gas in a refrigerator causes cooling on expansion because:

The gas used in a refrigerator is

The cooling in refrigerator is due to:

The greenhouse gas used in refrigerators is

A : Adiabatic expansion causes cooling. R : In adiabatic expansion, internal energy is used up in doing work.

A : Adiabatic expansion causes cooling. R : In adiabatic expansion, internal energy is used up in doing work.

Some magnets are brought in contact with a refrigerator. The magnets stick to the refrigerator because of