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Mass Transfer

Mass Transfer
Milk is dried usually in a __________ dryer.

Freeze
Spray
Tray
Rotary

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

2f
1/f
F
F/2

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Remains unaffected
Decreases
Decreases linearly
Increases

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Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

< 1
≤ 1
> 1
1

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Mass Transfer
If f is defined as above, then which of the following applies to a feed at dew point?

F > 1
F < 1
F = 1
0 < f < 1

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Mass Transfer
Capacity of a rotary dryer depends on its

R.p.m
None of the listed here
Inclination with ground surface
Both Inclination with ground surface & R.p.m

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