Which one among the following is responsible for formation of "Ozone Holes" in the atmosphere? (1) Benzopyrene (2) Hydrocarbons (3) Chlorofluorocarbons (4) UV radiation
(3) Chlorofluorocarbons Explanation: Chlorofluorocarbon (CFCs), commonly known by the DuPont brand name Freon, are considered as one of the ozonedepleting substances.