MCQOPTIONS
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				| 1. | 
                                    Casting flux is used to_______________? | 
                            
| A. | Prevent the oxidation of the metal during melting | 
| B. | increase the melting point of the flux | 
| C. | Flaring the point of the sprue attachment | 
| D. | None of the above | 
| Answer» D. None of the above | |