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Mass Transfer

Mass Transfer
The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is

∞
0.5
2
1

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Mass Transfer
During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.

Partial pressure of water vapor
None of these
Wet bulb temperature
Relative humidity

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

1
0.5
> 1
< 1

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Mass Transfer
Equilibrium-moisture curves of different solids

None of these
Depend on the humidity of the gas
Are same
Are different

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

Ethanolamine
Dilute HCl
Dilute ammoniacal liquor
Caustic solution

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Mass Transfer
Perforated plate towers are unique for solvent extraction because, they provide

Higher contact area
None of these
Better contact of the phase
Repeated coalescence & redispersion of the drop phase

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