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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 12
41.
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.
Packed
Bubble
Spray
Tray
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
The 'shanks system' of leaching (i.e., counter-current multiple contact leaching) is used for
recovery of tannis from the tree barks and woods.
leaching sodium nitrate from Chilean nitrate bearing rock.
both (a) and (b).
neither (a) nor (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Penetration model (theory) for mass transfer was enunciated by
Danckwerts
Toor and Marchello
Higbie
Kissinevskii
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Surface renewal model of mass transfer was enunciated by
Toor and Marchello
Fick
Danckwerts
Stefan
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.
temperature rises
pressure rises
temperature falls
pressure falls
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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