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Mass Transfer

Mass Transfer
The efficiency of a plate column will be maximum, when the flow is ideal __________ the plate.

Both A & B
Across
Above
Neither A nor B

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Mass Transfer
With increase in temperature, the leaching rate increases due to

Neither A nor B
Decreased liquid viscosity
Increased diffusivity
Both A & B

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Mass Transfer
The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by

Lowering the total pressure
Raising the temperature
Both A & B
Neither A nor B

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Mass Transfer
According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

D0.5
D2
D
1/D

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Mass Transfer
Can the efficiency of a plate in the distillation tower be greater than 100%?

Normally not; but is possible if infinite number of plates are put
Never
Yes
Yes ; if the reflux ratio is maximum

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Mass Transfer
The most efficient cooling tower out of the following is

Natural draft
Induced draft
Atmospheric
Forced draft

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MORE MCQ ON Mass Transfer

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