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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 7
41.
At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is __________ percent.
100
0
50
between 0 and 100
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is
equal to the heat of formation of surface compound.
equal to the heat of wetting.
zero.
called integral heat of adsorption.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Pick out the wrong statement:
Change in barometric pressure does not affect the relative humidity.
In case of a packed tower, the operating velocity is about half of the flooding velocity, generally.
'Elution' means the desorption of the adsorbed solute by a solvent.
The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The value of L/mG ratio for economical absorption operation ranges from
0.5 to 0.8
0.8 to 1.2
1.25 to 2.0
2.5 to 3.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Large scale usage of flash distillation is practised in
soap manufacturing
ammonia synthesis plant
polymerisation industry
petroleum refinning
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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