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Weep holes provided in the plates of a distillation column | |
A. | facilitate draining out liquid from a tray when the unit is not in operation. [Wrong Answer] |
B. | are normally located near the overflow weir so that any delivery of liquid during operation follows approximately the same path as the overflow fluid. [Wrong Answer] |
C. | must be large enough (usually 1/4" to 5/8" dia) to prevent plugging but should not deliver excessive amount of fluid during operation. [Wrong Answer] |
D. | all (a), (b) and (c). [Correct Answer] |