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Mass Transfer

Mass Transfer
What is the reflux ratio at total reflux?

Data insufficient
Infinity
Zero
Unity

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Mass Transfer
Molality is defined as the number of gm moles of solute per __________ of solvent.

Gm
m³
Litre
Kg

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Mass Transfer
Binary distillation involves the mass transfer by __________ at the gas-liquid interface.

Unidirectional diffusion from gas to liquid phase
A counter diffusion at an almost equal molar rate
Either A or B
Unidirectional diffusion from liquid to gas phase

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Mass Transfer
As the reflux ratio decreases, the

None of these
Column diameter increases
Separation becomes more efficient
Number of plates increases

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Mass Transfer
Drift in a cooling tower is

Dependent on the water lost by evaporation
All of these
The water entrained by the circulating air
Desirable

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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.

Exponential
Linear
Parabolic
Cubic

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