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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 10
31.
Can a cooling tower cool water below the wet bulb temperature of inlet air ?
yes
no
yes ; but height of cooling tower will be prohibitively high.
yes ; but the air flow rate should be excessively high.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
The solvent used in liquid-liquid extraction should have __________ less than one.
selectivity
distribution co-efficient
both (a) and (b)
neither (a) nor (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
The suitable evaporator for concentration of foaming liquids is a __________ evaporator.
long tube
short tube
vacuum
falling film
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model.
plug
perfectly mixed
both (a) & (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Tea percolation employs
liquid-liquid extraction
leaching
absorption
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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