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Mass Transfer

Mass Transfer
Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

5 to 10
1 to 5
> 10
1

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Mass Transfer
Rate of leaching increases with increasing

Temperature
Pressure
Viscosity of solvent
Size of the solid

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Mass Transfer
The expression, y(1 - x)/x(1 - y) is for

Selectivity
Absorption factor
Relative volatility
Murphree efficiency

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Mass Transfer
For gas absorption, low viscosity solvents are preferred, because of their

All of these
Rapid absorption rates
Low pumping pressure drop
Better flow characteristics

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Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?

Activated carbon
Alumina
Fuller
Silica gel

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Mass Transfer
Danckwerts developed the __________ theory.

Penetration
Film
None of these
Surface renewal

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