 
			 
			MCQOPTIONS
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				| 1. | For plastic type high filtration rate trickling filters what would be depth assumed while designing it? | 
| A. | t1.8-2.4 m | 
| B. | t<1.8 m | 
| C. | t3-12.2 m | 
| D. | t>12.2 m | 
| Answer» D. t>12.2 m | |