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Mass Transfer

Mass Transfer
Milk is dried usually in a __________ dryer.

Rotary
Tray
Spray
Freeze

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Mass Transfer
In the desorption of highly soluble gas from the liquid, the main resistance will be in the __________ phase.

Neither A nor B
Gas
Liquid
Both A & B

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Mass Transfer
For a binary mixture with low relative volatility,

An azeotrope may be formed during distillation
Use high pressure distillation
Use steam distillation
Use molecular distillation

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Mass Transfer
At minimum reflux ratio for a given separation

Minimum number of the theoretical plates is required
Number of plates is infinity
Number of plates is zero
Separation is most efficient

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Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

μ²
1/μ
√μ
μ

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Mass Transfer
In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

Both A & B
Range is 15°F
Neither A nor B
Approach is 10°F

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