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Mass Transfer

Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Half
Equal to
Twice
More than

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Mass Transfer
The unit of volumetric diffusivity is

Cm³/sec
Cm/sec
Cm²/sec
Cm²/seC₂

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Mass Transfer
For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will

Increase
Data insufficient, can't be predicted
Remain same
Decrease

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Mass Transfer
Which of the following adsorbant is used in the refinning of sugar?

Bone charcoal
Activated clay
Wood charcoal
Silica gel

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Mass Transfer
Milk is dried usually in a __________ dryer.

Spray
Tray
Rotary
Freeze

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Mass Transfer
The operating cost of a distillation column at minimum reflux ratio is

Maximum
Infinite
Minimum
Zero

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