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Mass Transfer

Mass Transfer
Ion exchange process is similar to

Absorption
Leaching
Adsorption
Extraction

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Mass Transfer
__________ equation applies to diffusivities in liquids.

Hirschfelder
None of these
Wilke and Chang
Gilliland

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Mass Transfer
Mass transfer co-efficient is defined as

Co-efficient = Flux/concentration difference
Flux = Co-efficient/concentration difference
None of the listed here
Flux=concentration difference/co-effi-cient

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Mass Transfer
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Wetted wall
Packed
Bubble cap
Perforated tray

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Mass Transfer
During sensible cooling process

Relative humidity increases
Both B and C
Relative humidity decreases
Wet bulb temperature decreases

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Mass Transfer
The critical moisture content in case of drying indicates the __________ rate period.

Beginning of falling
End of falling
Beginning of constant
None of these

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