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Mass Transfer

Mass Transfer
Leaching rate is independent of the

Agitation
None of the listed here
Particle size
Temperature

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Mass Transfer
The drying time between fixed moisture content within diffusion controlled 'falling rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )

√T
T
T²
T³

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Mass Transfer
If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is

0.215
0.107
0.017
0.31

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Mass Transfer
When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

1
?
> 1
< 1

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Mass Transfer
Ordinary diffusion process is also called __________ diffusion.

Forced
Concentration
Pressure
Thermal

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Mass Transfer
Ammonia present in the coke oven gas is removed by washing with

Caustic solution
Dilute ammoniacal liquor
Ethanolamine
Dilute HCl

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