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As the reflux ratio in a distillation coloumn is increased from the minimum, the | |
A. | slope of the operating line in stripping section decreases. [Wrong Answer] |
B. | number of plates decreases very slowly first and then more and more rapidly. [Wrong Answer] |
C. | total cost first decreases and then increases. [Correct Answer] |
D. | liquid flow increases while the vapor flow decreases for a system. [Wrong Answer] |