MCQOPTIONS
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				| 1. | 
                                    n type semiconductors | 
                            
| A. | are negatively charged | 
| B. | are produced when indium as impurity is added to germanium | 
| C. | are produced phosphorus as impurity is added to silicon | 
| D. | none of the above | 
| Answer» D. none of the above | |