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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Agitation and settling
Percolation
Decoction
Dissolution

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

44119
90-100
70-80
30-40

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Mass Transfer
The relation, Sc = Pr = 1, is valid, when the mechanism of __________ ansfer is same.

Heat and mass
Heat, momentum and mass
Heat and momentum
Mass and momentum

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Mass Transfer
__________ columns are used for liquid dispersion in a continuous gas phase.

Sieve plate
Bubble cap
Packed
Pulse

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Mass Transfer
Radioactive nuclear waste is treated in

Mixer-settler extractor
Bollman extractor
Rotating-disc contactor
Pulsed column extractor

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Mass Transfer
Batch tray dryers suffers from the disadvantage of

All of the listed here
High labour cost & low heat economy
High maintenance cost
Non-uniform & low production rate

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