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Mass Transfer

Mass Transfer
Schmidt number is given by

Sh x Pe
Re/Pe
Μ/ρDAB
Re.Pe

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Mass Transfer
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

Bubble
Packed
Spray
Tray

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Mass Transfer
Use of packed towers for distillation is generally limited to the

High pressure operation
Multicomponent distillation
Vacuum distillation
Small sizes

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Mass Transfer
Absorption factor method is used to calculate the number of ideal stages, when

Operating line lies below the equilibrium line
Both operating and equilibrium lines are parallel
Operating line lies above the equilibrium line
Pressure drop in the column is very high

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Mass Transfer
Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and

Humidified with wet bulb temperature decreasing
Dehumidified
Humidified at constant wet bulb temperature
None of these

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Mass Transfer
Dorr thickener is an equipment used for

Classification
Sedimentation
Leaching
Clarification

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