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

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

1.94

1.04

0.54

1.24

1.94

1.04

0.54

1.24

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Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ D2

K ∝ D

K ∝ √D

K ∝ D1.5

K ∝ D2

K ∝ D

K ∝ √D

K ∝ D1.5

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P = P

P

P < P

P >>P

P = P

P

P < P

P >>P

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Mass Transfer
In case of unsaturated air

Wet bulb temperature < dry bulb temperature

Dew point < wet bulb temperature

Both of the options given here

None of the listed here

Wet bulb temperature < dry bulb temperature

Dew point < wet bulb temperature

Both of the options given here

None of the listed here

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Mass Transfer
According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B? Assume that relative volatility (αAB = 2) does not change appreciably in the coloumn.

8

10

6

12

8

10

6

12

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Schmidt

Peclet

Sherwood

Stanton

Schmidt

Peclet

Sherwood

Stanton

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Mass Transfer

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

Mass Transfer Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

Mass Transfer Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

Mass Transfer In case of unsaturated air

Mass Transfer Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

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

Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

Mass Transfer
In case of unsaturated air

Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.