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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 1
26.
The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = __________
1
0.5
10
0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Dew point of a gas-vapour mixture
increases with temperature rise.
decreases with temperature rise.
decreases with decrease in pressure.
increases with increase in pressure.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.
increases with increase in
is one at unity value of
both (a) and (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Which of the following plays an important role in problems of simultaneous heat and mass transfer ?
Lewis number
Schmidt number
Prandtl number
Sherwood number
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In case of an absorber, the operating
line always lies above the equilibrium curve.
line always lies below the equilibrium curve.
line can be either above or below the equilibrium curve.
velocity is more than the loading velocity.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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