 
			 
			MCQOPTIONS
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				| 1. | Which of the following inspections is used for detecting invisible surface defects in a nonmagnetic casting? | 
| A. | Visual inspection | 
| B. | Dye penetrant inspection | 
| C. | Radiographic examination | 
| D. | Ultrasonic inspection | 
| Answer» C. Radiographic examination | |