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Mass Transfer

Mass Transfer
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

∞
-ve
+ve

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Mass Transfer
In most of the vacuum crystalliser, vacuum is generally produced by means of a

None of these
Compressed air jet
Steam jet ejector with a barometric condenser
Suction pump

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Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

√P
1/P
P
1/√P

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Mass Transfer
1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is

0.25
0.2
0.4
0.175

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Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mole fraction
None of these
Mole ratio
Partial pressure

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Mass Transfer
The relation, Sc = Pr = 1, is valid, when the mechanism of __________ ansfer is same.

Heat and mass
Mass and momentum
Heat and momentum
Heat, momentum and mass

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