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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 3
31.
The binary diffusivity in gases at atmospheric conditions is about
10-9 cm/sec
10-1 cm2/sec
10-3 sec/cm
10-4 cm2/sec2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Percentage saturation is __________ the relative saturation.
always smaller than
always greater than
not related to
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
In case of a desorber (stripper), the
operating line always lies above the equilibrium curve.
operating line always lies below the equilibrium curve.
temperature remains unaffected.
temperature always increases.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
What is the reflux ratio at total reflux ?
Zero
Infinity
Unity
Data insufficient
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Under conditions of flooding in packed tower, the gas pressure drop
decreases rapidly
increases rapidly
remains constant
is maximum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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