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| Q. |
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm. |
| A. | 1.2 to 1.5 |
| B. | 2.5 to 3 |
| C. | 3 to 4 |
| D. | 5 |
| Answer» A. 1.2 to 1.5 | |
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