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Mass Transfer

Mass Transfer
Mass transfer co-efficient varies as DAB0.5, according to the __________ theory.

Film
None of these
Penetration
Surface renewal

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Mass Transfer
Milk is dried usually in a __________ dryer.

Spray
Rotary
Freeze
Tray

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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

0.31
0.107
0.017
0.215

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Mass Transfer
When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.

None of these
Steam
Continuous
Azerotropic

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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
Total reflux in a distillation operation requires minimum

All of these
Condenser load
Reboiler load
Number of plates

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