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Mass Transfer

Mass Transfer
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

+ve
-ve
∞

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Mass Transfer
Corresponding to Prandtl number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Sherwood
Schmidt
Peclet
Stanton

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Equal to
Greater than
Smaller than
Either A, or B ; depends on the type of packing

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Mass Transfer
Milk is dried usually in a __________ dryer.

Rotary
Tray
Freeze
Spray

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Kennedy extractor
Bollman extractor
Hydrocyclones
Pachuka tank

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Mass Transfer
Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty?

Perforated tray tower
Bubble cap tower
Grid tray tower
Wetted wall tower

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