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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 12
31.
With increase in the concentration of the adsorbate, the integral heat of adsorption
increases.
decreases.
remains unchanged.
may increase or decrease ; depends on the type of adsorbate.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Small dia distillation column can be a
packed column
sieve tray
bubble cap
any of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is
0
1
< 1
> 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is
0.048
0.079
0.122
0.152
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
__________ column is used in gas absorption process.
Wetted wall
Seive/perforated tray
Bubble cap
Packed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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