Practicing Success
Which of the following items consists of "Chlorofluorocarbons"? |
Air-conditioners Televisions Washing machine All of the above |
Air-conditioners |
The problem of ozone depletion is caused by high levels of chlorine and bromine compounds in the stratosphere. The origins of these compounds are chlorofluorocarbons (CFC), used as cooling substances in airconditioners and refrigerators, or as aerosol propellants, and bromofluorocarbons (halons), used in fire extinguishers |