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Mass Transfer

Mass Transfer
The relative volatility of a binary mixture at the azeotropic composition is

> 1
1
∞

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

90-100
44119
30-40
70-80

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Mass Transfer
Schimdt number and Lewis number for pure air at atmospheric conditions are respectively

1 and 0
0 and ≈ 1
>1 and ≈ 1
< 1 and ≈ 1

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Mass Transfer
At what value of reflux ratio, number of theoretical plates in a distillation column is minimum?

1
∞
< 1

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Mass Transfer
In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the

Nature of the constituents
Concentration
None of these
Temperature and pressure

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Mass Transfer
The dimension of diffusivity is same as that of the

Molal concentration
Velocity head
Density
Kinematic viscosity

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