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Mass Transfer

Mass Transfer
Leaching of coffee from coffee beans is done by

Lime water
Dilute H₂SO₄ (hot)
Hexane
Hot water

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Mass Transfer
For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of H₂/ky.Cz is around

0.6
1
0.72
0.24

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Mass Transfer
In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,

None of these
Inversely
Exponentially
Linearly

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Mass Transfer
If the amount of the steam used in steam distillation is increased, the temperature of distillation

Increases
Depends on relative volatility
Remains unchanged
Decreases

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Mass Transfer
Heat sensitive materials with very high latent heat of vaporisation may be economically separated using

Evaporation
Liquid extraction
Distillation
Absorption

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Mass Transfer
Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as

K ∝ D
K ∝ D1.5
K ∝ √D
K ∝ D2

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