Question

What is the gas that comes out when we open a refrigerator?

Answer 1

Ammonia gas flows upward into the condenser,  liquid ammonia makes its way to the evaporator where it mixes with hydrogen gas and evaporates, producing cold temperatures inside the refrigerator's cold box.

Modern refrigerators usually use a refrigerant called HFC-134a (1,1,1,2-Tetrafluoroethane), which does not deplete the ozone layer, instead of Freon. A R-134a is now becoming very uncommon in Europe. Newer refrigerants are being used instead.

Hope this helps....

Answer 2

chlorofluorocarbon is the gas.