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Mass Transfer

Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re
Re0.33
Re0.83
Re0.53

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB0.5, according to __________ theory.

None of these
Penetration
Film
Surface renewal

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Mass Transfer
Wetted wall tower experiment determines the

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

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Mass Transfer
The percentage humidity is less than the relative humidity only at __________ percent humidity.

Zero
Both zero and hundred
None of these
Hundred

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Mass Transfer
High pressure at the bottom of a distillation tower handling heat sensitive materials results in

Thermal decomposition of bottoms
Erosion of the tower
Increased relative volatility
Very efficient operation

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Mass Transfer
Rate of leaching increases with increasing

Size of the solid
Pressure
Temperature
Viscosity of solvent

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