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Mass Transfer

Mass Transfer
H₂S present in naphtha reformed gas is removed by absorbing with

Vacuum gas oil
Ethanolamine
K₂CO₃
HCl

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Mass Transfer
Which of the following is an undesirable property in a tower packing?

Large surface per unit volume
Low weight per unit volume
Large free cross-section
Large weight of liquid retained

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Mass Transfer
Danckwerts developed the __________ theory.

Penetration
None of these
Film
Surface renewal

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Mass Transfer
__________ is concerned with the adsorption equilibria.

Fick's law
Gibb's equation
Freundlich equation
None of these

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Mass Transfer
Stage efficiency in a leaching process depends on the

Both A & B
Rate of diffusion of the solute through the solid and into the liquid
Time of contact between the solid and the solution
Vapour pressure of the solution

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Mass Transfer
NSc/NPr is called the

Lewis number
Sherwood number
Psychrometric ratio
Stantan number

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