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Mass Transfer

Mass Transfer
Mass transfer co-efficient varies as DAB0.5, according to the __________ theory.

Penetration
Surface renewal
None of these
Film

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Mass Transfer
Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.

Degree of ideality
Both A & B
Viscosity
Neither A nor B

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

Ethanolamine
HCl
Vacuum gas oil
K₂CO₃

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Mass Transfer
__________ developed the film theory.

Ergun
Levenspeil
Higbie
Fick

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Mass Transfer
HETP is numerically equal to HTU, only when the operating line

And equilibrium lines are parallel
Lies below the equilibrium line
Lies above the equilibrium line
Is far from the equilibrium line

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Mass Transfer
Use of packed towers for distillation is generally limited to the

Small sizes
Vacuum distillation
High pressure operation
Multicomponent distillation

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