Mass Transfer
A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is

1.04
0.54
1.24
1.94

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Mass Transfer
In steam distillation, the

Temperature is higher than the boiling point of either component
Temperature is 100°C
Temperature is more than 100° C
Product must be immiscible with water

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