7. The flooding in a distillation column is detected by
A. a sharp decrease in pressure drop
B. a sharp increase in pressure drop
C. a sharp decrease in liquid hold up in the column
D. a sharp increase in Murphree plate efficiency
7. The flooding in a distillation column is detected by
A. a sharp decrease in pressure drop
B. a sharp increase in pressure drop
C. a sharp decrease in liquid hold up in the column
D. a sharp increase in Murphree plate efficiency