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Mass Transfer

Mass Transfer
According to Chilton-Colburn analogy for mass transfer, NSt.NSc2/3 is equal to

F
F/2
2f
1/f

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Mass Transfer
The most common packing used in industrial operations is __________ rings.

Single spiral
Lessing
Cross-partition
Raschig

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

Packed
Sieve plate
Pulse
Bubble cap

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Mass Transfer
Diameter of raschig rings used in packed tower in industry is normally around __________ inches.

2
12
18
8

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Mass Transfer
For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of Hâ‚‚/ky.Cz is around

0.24
1
0.72
0.6

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Mass Transfer
Which of the following is used for the concentration of rubber latex?

Short tube evaporator
Calendria
Long tube vertical evaporator
Agitated film evaporator

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