MCQOPTIONS
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				| 1. | 
                                    Placing cast under tap water is to be avoided as______________? | 
                            
| A. | H2O interferes with hygroscopic expansion | 
| B. | H2O inhibits polymerization of dental resin | 
| C. | H2O interferes with Crystallization of dihydrate | 
| D. | Gypsum is slightly soluble in water and the surface of the cast will be eroded | 
| Answer» E. | |