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Mass Transfer

Mass Transfer
Rate of leaching increases with increasing

Viscosity of solvent
Size of the solid
Temperature
Pressure

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Mass Transfer
Stefan's law describes the mass transfer by

Diffusion
Neither A nor B
Bulk flow
Both A & B

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB according to the __________ theory.

None of these
Surface-renewal
Penetration
Film

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Mass Transfer
If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are

Straight
Parallel
Neither A nor B
Both A & B

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Mass Transfer
Mass transfer co-efficient of liquid is

Not affected by the temperature
Affected much less by temperature than that for gases
None of these
Affected more by temperature than that for gases

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

44119
30-40
90-100
70-80

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