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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 14
6.
Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as
K ∝D
K ∝D
K ∝D1.5
K ∝D2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Desulphurisation of petrol is done in a
Bollman extractor
rotating disc extractor
packed extraction column
plate type extraction column
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Chemisorption compared to physical absorption has
lower adsorption rate.
lower capacity of the solvent for the solute gas.
increased utilisation of stagnant zones of the liquid phase.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Rate of adsorption increases as the
temperature increases.
temperature decreases.
pressure decreases.
size of adsorbent increases.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Pick out the system with maximum boiling azeotrope at 1 atm.
acetone chloroform
ethyl alcohol-water
benzene-ethyl alcohol
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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