MCQOPTIONS
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| 1. |
Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute). |
| A. | 5-10 |
| B. | 30-80 |
| C. | 150-250 |
| D. | 350-400 |
| Answer» C. 150-250 | |