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Mass Transfer

Mass Transfer
Stefan's law describes the mass transfer by

Bulk flow
Diffusion
Neither A nor B
Both A & B

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Mass Transfer
NSc/NPr is called the

Sherwood number
Lewis number
Stantan number
Psychrometric ratio

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Mass Transfer
Which of the following is not a continuous drier?

Drum drier
Tunnel drier
Spray drier
Tray drier

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Mass Transfer
Inside the distillation columns, the

All of these
Vapors are not always at their dew points
Driving force for the liquid flow is its weight
Highest temperatures is near the feed plate

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Mass Transfer
When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

1
> 1
< 1
?

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Mass Transfer
__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.

Wet bulb
Dry bulb
None of these
Dew point

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