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Mass Transfer

Mass Transfer
Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve.

None of these
50
100
78

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Mass Transfer
Rate of leaching increases with increasing

Size of the solid
Viscosity of solvent
Temperature
Pressure

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Mass Transfer
Dry bulb temperature of the gas is __________ the wet bulb temperature.

Equal to
None of these
Less than
More than

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Mass Transfer
In liquid extraction, if the selectivity is unity, then

Solvent flow rate should be very low
Amount of solvent required will be minimum
No separation will occur
Separation of the constituents is the most effective

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Mass Transfer
Unit of molal diffusivity is

Gm moles/cm. sec
Cm²/sec gm . mole
Gm moles/cm². sec
Gm moles/cm² . sec

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Mass Transfer
Dimension of mass diffusivity is the same as that of

Kinematic viscosity
Dynamic viscosity
Pressure
Surface tension

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