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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 7
1.
Perforated plate towers are unique for solvent extraction because, they provide
higher contact area.
better contact of the phase.
repeated coalescence & redispersion of the drop phase.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.
interface
gas phase
liquid phase
all 'a', 'b' & 'c'
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Pick out the wrong statement pertaining to the analogy between equations of heat and mass transfer operations.
Sherwood number in mass transfer is analogous to Nusselt number in heat transfer.
Prandtl number in heat transfer is analogous to Schmidt number in mass transfer.
Reynolds number in mass transfer is analogous to Grashoff number in heat transfer.
Reynolds number remains the same in both heat and mass transfer.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is
0
∞
-ve
+ve
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
The individual mass transfer co-efficients (moles/m2 . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?
liquid side
gas side
interfacial
both liquid and gas side
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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