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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 12
16.
In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase.
liquid
gas
both (a) & (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Drying of refractory is normally carried out in a __________ dryer.
open pan
tray
rotary vacuum
truck/tunnel.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The expression, ln(F/W) = is
differential distillation equation
for NtoG in absorption for dilute mixture
slope of q-line in McCabe-Thiele method
for relative volatility
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Heat sensitive materials with very high latent heat of vaporisation may be economically separated using
liquid extraction
distillation
evaporation
absorption
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
When the solvent dissolves very little of solute, then
solvent of low latent heat of vaporisation should be used.
solvent of low freezing point should be used.
large quantity of solvent is required to extract the solute.
very small quantity of solvent is required.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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