Mass Transfer
______ is the separation technique used for desalination of sea water.

Reverse osmosis
Adsorption
Thermal diffusion
Absorption

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Mass Transfer
Fenske's equation for determining the minimum number of theoretical stages in distillation column holds good, when the

Multicomponent distillation is involved
Relative volatility is reasonably constant
Mixture (to be separated) shows negative deviation from ideality
Mixture (to be separated) shows positive deviation from ideality

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Mass Transfer
Blowdown in a cooling tower

Is undesirable
Increases the scale forming tendencies of water
Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities
All of these

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Mass Transfer
Which of the following processes is not an example of adsorption applied to gaseous separations?

Decolouration of yellow glycerene
Recovery of valuable solvent vapors from dilute mixture with air and other gases
Removal of objectionable odour and impurities from industrial gases
Dehumidification of air and gas

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