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Mass Transfer

Mass Transfer
The unit of volumetric diffusivity is

Cm²/sec
Cm²/seC₂
Cm³/sec
Cm/sec

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Mass Transfer
Percentage saturation is __________ the relative saturation.

Always smaller than
None of these
Always greater than
Not related to

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Mass Transfer
Cox chart is useful in the design of

Dryer
Distillation column
Evaporator
Crystalliser

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Mass Transfer
The critical moisture content in case of drying indicates the __________ rate period.

None of these
End of falling
Beginning of falling
Beginning of constant

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Mass Transfer
Fractional solvent extraction

Employs two solvents
Employs only one solvent
Results in low interfacial tension
None of the listed here

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Mass Transfer
In the constant rate period of the rate of drying curve for batch drying,

Surface evaporation of unbound moisture occurs
None of these
Rate of drying decreases abruptly
Cracks develop on the surface of the solid

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