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___________________?

Related Mcqs:

Steam distillation is used for separation of high boiling ____________________?

A. Substances from non-volatile impurities B. Volatile impurity from still higher boiling substances C. Both A. and B. D. Neither A. nor B....

Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and _________________?

A. Humidified with wet bulb temperature decreasing B. Humidified at constant wet bulb temperature C. Dehumidified D. None of these...

Channelling is most severe_____________________?

A. In towers packed with stacked packing B. In towers packed randomly with crushed solids C. In dumped packing of regular units D. At very high liquid flow rate...

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the________________________?

A. Range is 15°F B. Approach is 10°F C. Both A. & B. D. Neither A. nor B....

Smoke is an example of ___________________?

A. Solid dispersed in liquid B. Solid dispersed in gas C. Liquid dispersed in gas D. Gas dispersed in liquid...