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Mass Transfer

Mass Transfer
The unit of volumetric diffusivity is

Cm/sec
Cm²/sec
Cm³/sec
Cm²/seC₂

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Mass Transfer
Humid volume, at a given temperature is a/an __________ function of humidity.

Exponential
Inverse
Linear
Logarithmic

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

Vacuum gas oil
HCl
Ethanolamine
K₂CO₃

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Mass Transfer
In the constant rate period of the rate of drying curve for batch drying,

Cracks develop on the surface of the solid
Surface evaporation of unbound moisture occurs
None of these
Rate of drying decreases abruptly

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB according to the __________ theory.

None of these
Penetration
Film
Surface-renewal

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Mass Transfer
For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause __________ plate requirement.

Marginal decrease in the number of
No change in theoretical
Major decrease in the number of
None of the listed here

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