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Mass Transfer

Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

More than
Equal to
Twice
Half

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Mass Transfer
Rayleigh's equation applies to __________ distillation.

Flash
Steam
Continuous
Differential

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Mass Transfer
Molecular distillation is

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

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Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

2.5 to 3.5
0.5 to 0.8
1.25 to 2.0
0.8 to 1.2

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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 = 1
q = 0
q < 1
q > 1

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Mass Transfer
The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture.

Total pressure
Temperature
All of these
Composition

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