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Mass Transfer

Mass Transfer
The dew point of a saturated gas phase equals the __________ temperature.

Room
Gas
None of these
Wet bulb

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Mass Transfer
In gas-liquid contact operation, the number of ideal stages, N = (xa - xb)/(xb - x*b) . This is true when the stripping factor 'S' is

S = 1
S = ∞
S < 1
S > 1

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Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

None of these
Forced
Induced
Natural

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Mass Transfer
Molecular distillation is

Very low pressure distillation
For heat-sensitive materials
Both B and C
High temperature distillation

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q = 0
q = 1
q > 1
q < 1

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Mass Transfer
Separation of two or more components of a liquid solution can not be achieved by

Liquid extraction
Fractional crystallisation
Evaporation
Absorption

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