Explanation : Modem refrigerators usually use a refrigerant called HFC-134a (1, 1, 1, 2-Tetrafluoroethane), which does not deplete the ozone layer, instead of Freon. Freon used to be the most common refrigerant till the 1980s; however, its use has declined since the 1990s because it comes under the class of Chlorofluorocarbon (CFC). However, Freon still remains the most commonly used refrigerant. ....Read more