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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 3
16.
Pick out the wrong statement.
Critical moisture content is not a property of the material itself.
A sharp increase in pressure drop gives an indication of the flooding in a distillation column.
Separation of components is not possible in liquid extraction, if selectivity is unity.
Dehydration of ethyl alcohol is most economically done by molecular distillation at very high vacuum.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Only small amount of evaporation of water produces large cooling effects because of its
large latent heat
low viscosity
small latent heat
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The most common packing used in industrial operations is __________ rings.
raschig
lessing
cross-partition
single spiral
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
When the feed to a distillation column is a saturated liquid, slope of the feed line is
zero
unity
infinity
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Leaching of sugar from sugar beets is done by
hot water
hexane
dilute H2SO4
lime water
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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