freon kya hai/chlorofluorocarbon kya hai/freon gas ke upyog
Climate 101: Ozone Depletion | National Geographic
Chlorofluorocarbon - Video Learning - WizScience.com | high quality air purifier
Chlorofluorocarbon: Jeff Schroeder Reads The Dictionary
Chlorofluorocarbons (CFCs) are fully halogenated paraffin hydrocarbons that contain only carbon (С), chlorine (Cl), and fluorine (F), produced as volatile derivative of methane, ethane, and propane. They are also commonly known by the DuPont brand name Freon. The most common representative is dichlorodifluoromethane. Many CFCs have been widely used as refrigerants, propellants, and solvents. Because CFCs contribute to ozone depletion in the upper atmosphere, the manufacture of such compounds has been phased out under the Montreal Protocol, and they are being replaced with other products such as hydrofluorocarbons (HFCs) and R-134a.
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