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Mass Transfer

Mass Transfer
Boiling point diagram is not affected by the ambient

Humidity
Pressure
Both B and C
Temperature

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Mass Transfer
The adiabatic saturation curve for a vapour-gas mixture is

None of these
Slightly concave downward
Slightly concave upward
Straight line

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Mass Transfer
Low viscosity absorbent is preferred for reasons of

All of these
Low pressure drop on pumping
Improved flooding characteristics
Rapid absorption rates and good heat transfer characteristics

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Mass Transfer
Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.

Degree of ideality
Both A & B
Neither A nor B
Viscosity

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Mass Transfer
In a counter-current extractor, as the axial mixing increases, the extraction efficiency

Depends on the pressure of the system
Remains unchanged
Decreases
Increases

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Mass Transfer
When an unsaturated air-water mixture is heated at constant pressure, then

The relative humidity increases
The partial pressure of water vapour increases
The relative humidity decreases
The specific humidity decreases

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