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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 12
6.
At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.
operating
total
minimum
maximum permissible
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their
viscosity
density
solubility
relative volatility
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Components, having widely different boiling point in a binary mixture, can be separated using __________ distillation.
molecular
extractive
steam
simple
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Which of the following equipments is not used in liquid-liquid extraction ?
Pachuka tank
Agitated vessels
Centrifugal extractors
Packed towers
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Pick out the wrong statement.
Packed towers are preferred for vacuum operation, because the pressure drop through the packing is less and they (packings) also lessen the possibility of tower wall collapse.
Packed towers are preferred over plate towers for handling corrosive and foamy liquids.
Diameter of randomly packed tower is normally more than 1.2 metres.
Due to uneven supply and improper distribution of liquid, problem of channeling, loading & flooding is generally encountered in packed towers.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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