MCQOPTIONS
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				| 1. | 
                                    Perfluorocarbons (e.g. CF₄, C₂F₆) and sulphur hexafluoride (SF₆) has a long lasting atmospheric | 
                            
| A. | Reaction | 
| B. | Lifetime | 
| C. | chain Reactions | 
| D. | Chemical Reaction | 
| Answer» C. chain Reactions | |