MCQOPTIONS
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MCQOPTIONS
| 1. |
The range of temperature at which mesophilic microorganism becomes active in sludge digester is ___________ |
| A. | 30-40<sup>o</sup>C |
| B. | 10-40<sup>o</sup>C |
| C. | 20-50<sup>o</sup>C |
| D. | 20-40<sup>o</sup>C |
| Answer» E. | |