 
			 
			MCQOPTIONS
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				| 1. | Which of the following is the purpose of runner extension? | 
| A. | To make smooth surface finish | 
| B. | To make the casting of specific size and shape | 
| C. | To remove slag and dross from the metal | 
| D. | To make fast cooling of molten metal | 
| Answer» D. To make fast cooling of molten metal | |