McqMate
| Q. |
The depletion of ozone layer is due to - |
| A. | chloro fluoro carbon |
| B. | carbon dioxide |
| C. | sulphur dioxide |
| D. | ethane |
| Answer» A. chloro fluoro carbon | |
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Explanation: A chlorofluorocarbon (CFC) is an organic compound that contains only carbon, chlorine, hydrogen and fluorine, produced as a volatile derivative of methane and ethane. The manufacture of such compounds has been phased out (and replaced with products such as R-4104 by the Montreal Protocol because they contribute to ozone depletion in the upper atmosphere. |
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