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Mass Transfer

Mass Transfer
Leaching of coffee from coffee beans is done by

Lime water
Hot water
Dilute H₂SO₄ (hot)
Hexane

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Mass Transfer
In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the __________ number.

None of these
Lewis
Grashoff
Sherwood

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Mass Transfer
In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase.

Gas
Liquid
Neither A nor B
Both A & B

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Mass Transfer
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

Thermal conductivity
Strength
None of the listed here
Electrical resistance

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Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

All of these
Interface
Gas phase
Liquid phase

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Mass Transfer
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

Decreases
Remains unaffected
Increases
Increases Linearly

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