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Mass Transfer

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

Equal to
More than
Half
Twice

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Mass Transfer
Tea percolation employs

None of these
Liquid-liquid extraction
Leaching
Absorption

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Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

1
< 1
> 1
≤ 1

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Mass Transfer
For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be

2
1
3

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Mass Transfer
Use of packed towers for distillation is generally limited to the

Multicomponent distillation
High pressure operation
Vacuum distillation
Small sizes

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

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

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