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Mass Transfer

Mass Transfer
__________ developed the film theory.

Higbie
Levenspeil
Ergun
Fick

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Mass Transfer
NSc/NPr is called the

Sherwood number
Stantan number
Lewis number
Psychrometric ratio

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Mass Transfer
As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches

Zero
That of normal condensation
Integral heat of adsorption
None of these

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Mass Transfer
The Schmidt number which is defined as, μ/ρ D, is the ratio of the

None of these
Thermal diffusivity to the mass diffusivity
Momentum diffusivity to the mass dif-fusivity
Momentum diffusivity to the thermal diffusivity

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Mass Transfer
When a multistage tray tower uses a minimum reflux ratio, it implies

Infinite trays and minimum reboiler heat load
Minimum trays and minimum reboiler heat load
Minimum trays and maximum reboiler heat load
Infinite trays and maximum reboiler heat load

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Mass Transfer
For the same process conditions, the reflux ratio of an unlagged distillation column

None of these
Increases in winter
Increases in summer
Decreases in winter

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