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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 4
36.
Leaching of uranium ore and gold ore is done in
centrifugal extractor
Pachuka tanks
Bollman extractor
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Blowdown in a cooling tower
means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities.
increases the scale forming tendencies of water.
is undesirable.
all (a), (b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
During constant rate period, the rate of drying decreases with the
decrease in air temperature
increase in air humidity
both (a) and (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Antibiotics are best handled in a
Podbielniak extractor.
sieve tray contractor.
rotating disc contactor.
pulsed column extractor.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
The fixed cost of a distillation column at minimum reflux ratio is
minimum
infinite
optimum
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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