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Mass Transfer

Mass Transfer
The unit of volumetric diffusivity is

Cm²/sec
Cm²/seC₂
Cm³/sec
Cm/sec

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Mass Transfer
Heat sensitive materials with very high latent heat of vaporisation may be economically separated using

Distillation
Evaporation
Liquid extraction
Absorption

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

Vacuum gas oil
K₂CO₃
Ethanolamine
HCl

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Mass Transfer
The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or "outgassed" adsorbent to from a definite concentration of adsorbate is called its

Differential heat of adsorption
Heat of normal condensation
Heat of wetting
Integral heat of adsorption

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Mass Transfer
When both the fluids flow concurrently in an absorber, the slope of the operating line is

-1
- ve
1
+ ve

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Mass Transfer
The caking of crystals can be prevented by

Maintaining low critical humidity
Both A and C
Coating the product with inert material
Maintaining high critical humidity

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MORE MCQ ON Mass Transfer

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