Question

What is Freon?

Answer 1

Hint : Any of numerous simple fluorinated aliphatic organic compounds used in commerce and industry is known as Freon. Freons often contain hydrogen, chlorine, or bromine in addition to fluorine and carbon. Freons are a group of chemicals that includes chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and related substances. E.I. du Pont de Nemours & Company has registered the name Freon as a trademark.

Complete Step By Step Answer:
Freons are colourless, odourless, nonflammable, noncorrosive gases or liquids with minimal toxicity that were first introduced as refrigerants in the $1930s$ . They also proved helpful as propellants for aerosols and in a variety of other technological uses. They are particularly useful refrigerants because of their low boiling temperatures, low surface tension, and low viscosity. They're inert and incredibly stable substances. In their circulation through refrigerating and air-conditioning systems, Freons do not pose a fire threat or have a perceptible odour. Dichlorodifluoromethane (Freon $12\,$ ), trichlorofluoromethane (Freon $11$ ), and chlorodifluoromethane have been the most important members of the group (Freon $22$ ), dichlorotetrafluoroethane (Freon $114$ ), and trichlorotrifluoroethane (Freon $113$ ).
Photochemical dissociation of Freons and related CFCs was suggested as a key cause of apparent ozone layer loss in the mid- $1970s$ . Because ozone absorbs UV light that can cause skin cancer, ozone depletion could pose a hazard to animal life on Earth.

Note :
In the late $1970s$ , the use of Freons in aerosol-spray containers was banned in the United States. By the early $1990s$ , mounting evidence of ozone depletion in the polar regions had raised global public awareness of the problem, and by $1996,$ practically all Freons had been banned in most affluent countries. Also known as chlorofluorocarbon.