 
			 
			MCQOPTIONS
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				| 1. | A closed thermodynamic system is one in which: | 
| A. | There is no energy or mass transfer across the boundary | 
| B. | There is no mass transfer but energy transfer exists | 
| C. | There is no energy transfer but there is mass transfer | 
| D. | Both energy and mass transfer exist | 
| Answer» C. There is no energy transfer but there is mass transfer | |