 
			 
			MCQOPTIONS
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				| 1. | What is the size of ionic particles present in wastewater? | 
| A. | < 0.1 micron | 
| B. | 0.01 micron | 
| C. | 0.001 micron | 
| D. | 0.0001 micron | 
| Answer» D. 0.0001 micron | |