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Mass Transfer

Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

91.5
95
90
99

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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

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Mass Transfer
Raoult's law is applicable to the

Mixture of water and alcohol
Ideal solutions
Real solutions
Non-ideal gases

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Mass Transfer
The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an __________ law.

Parabolic
Exponential
Linear
Cubic

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Mass Transfer
For gas absorption, low viscosity solvents are preferred, because of their

Low pumping pressure drop
Rapid absorption rates
Better flow characteristics
All of these

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Mass Transfer
For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of Hâ‚‚/ky.Cz is around

0.24
0.6
1
0.72

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