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Mass Transfer

Mass Transfer
In a binary system, separation is very efficient, when the relative volatility is

> 1
< 1
0.5
1

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Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ D2
K ∝ D
K ∝ D1.5
K ∝ √D

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Mass Transfer
Which of the following quantities need not be fixed before starting the design of a co-current absorber?

None of the listed here
Flow rate of entering liquid
Heat gain or loss
Flow rate of gas

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Mass Transfer
Water entrained by circulating air in cooling towers is termed as

Vapor load
Drift
None of the listed here
Blow down

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Mass Transfer
For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

Not required
Calculated
Unknown
Known

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Mass Transfer
In a packed bed absorption column, the channelling will be noted by the

Sharp drop in pressure drop
Increase in flow rate
None of these
Sharp rise in pressure drop

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