 
			 
			MCQOPTIONS
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				| 1. | What is the angle at which the plates should be inclined in a lamella clarifier? | 
| A. | 70-80 degree | 
| B. | 45-60 degree | 
| C. | 20-35 degree | 
| D. | 35-45 degree | 
| Answer» C. 20-35 degree | |