Mass Transfer
Packed column distillation is limited to the column __________ metres.

Height < 6
Both A & B
Diameter < 0.6
Neither A nor B

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Mass Transfer
For water-ethanol system, the minimum reflux ratio

Is computed from the slope of the upper operating line that is tangent to the equilibrium curve
Cannot be computed
Is computed from the intercept of the operating line
Is the optimum reflux ratio

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