MCQOPTIONS
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MCQOPTIONS
| 1. |
BOD of a waste water sample is estimated to be 180 mg/l. Assuming 4 mg/l BOD can be consumed in the BOD bottle, the volume of undiluted sample to be added to a 300 ml bottle is nearly |
| A. | 6.7 ml |
| B. | 5.6 ml |
| C. | 4.4 ml |
| D. | 3.3 ml |
| Answer» B. 5.6 ml | |