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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 13
46.
Use of packed towers for distillation is generally limited to the
small sizes.
multicomponent distillation.
high pressure operation.
vacuum distillation.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Pick out the wrong statement.
The binary diffusivity in liquids is of the order of 10-5 cm2 /sec.
Molecular diffusion in solid is much faster than that in liquids.
Particles movement from higher concentration to lower concentration takes place in diffusion process.
According to Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary.
Answer: Option
Explanation:
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48.
Which of the following decreases during evaporative cooling process with recirculated water supply ?
Wet bulb temperature
Relative humidity
Partial pressure of vapour
None of these
Answer: Option
Explanation:
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49.
Laboratory determination of the dif-fusivity of vapor is done by __________ method.
wetted wall column
Gilliland's
Winkel mann's
Wike's
Answer: Option
Explanation:
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50.
The minimum liquid rate to be used in an absorber corresponds to an operating line
of slope = 1
ofslope = 0.1
tangential to the equilibrium curve
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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