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Mass Transfer

Mass Transfer
At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes

?
None of these
1

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Mass Transfer
Perforated plate towers are unique for solvent extraction because, they provide

None of these
Higher contact area
Better contact of the phase
Repeated coalescence & redispersion of the drop phase

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Mass Transfer
Which of the following assumes constant molal vaporisation and overflow?

Plate absorption column
Enthalpy concentration method
McCabe-Thiele method
Ponchan-Savarit method

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Mass Transfer
Overall efficiency of the distillation column is

Always more than the point efficiency
The ratio of number of ideal plates to actual plates
The ratio of number of actual plates to ideal plates
Same as the Murphree efficiency

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Mass Transfer
The process employing desorption of the absorbed solute by a solvent is called

Elution
Reverse osmosis
Sublimation
Osmosis

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Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Specific heat
Sensible heat
Humid heat
Latent heat

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