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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 6
41.
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.
1.2 to 1.5
2.5 to 3
3 to 4
5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.
wet bulb temperature
partial pressure of water vapor
relative humidity
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
In case of absorption, both the operating and equilibrium lines will be straight for
isothermal operation.
dilute solutions.
dilute solutions and isothermal operation.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Mass transfer co-efficient varies as DAB0.5, according to the __________ theory.
film
surface renewal
penetration
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
For an absorber, both equilibrium and operating line will be straight for
concentrated solution and non-isothermal operation.
dilute solution and non-isothermal operation.
dilute solution and isothermal operation.
concentrated solution and isothermal operation.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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