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Mass Transfer

Mass Transfer
The fixed cost of a distillation column at minimum reflux ratio is

Minimum
None of these
Infinite
Optimum

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

30-40
70-80
90-100
44119

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Mass Transfer
Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.

Unbound
Critical
Free
Bound

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

Vacuum distillation
Small sizes
High pressure operation
Multicomponent distillation

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Mass Transfer
Wetted wall tower experiment determines the

None of these
Molal diffusivity
Volumetric co-efficient
Mass transfer co-efficient

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Peclet
Sherwood
Stanton
Lewis

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