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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 8
31.
The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.
dew point
wet bulb
dry bulb
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Entrainer used in azeotropic distillation should
form a low boiling azeotrope with one of the constituents of the mixture.
form a new azeotrope of low relative volatility with one of the constituents of the mixture.
have high latent heat of vaporisation.
have high viscosity to provide high tray efficiency.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because
temperature is less.
total pressure is less.
mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition.
saturated steam is used for steam distillation.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Pick out the wrong statement.
The operating line always lies above the equilibrium solubility curve in case of a single component absorber.
The operating line always lies below the equilibrium solubility curve in case of a single component stripper.
The operating pressure in solvent extraction system should be below vapor pressures of all components.
The solubility of a particular gas in ideal solution in any solvent is always the same.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Leaching of coffee from coffee beans is done by
hot water
hexane
lime water
dilute H2SO4 (hot)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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