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Mass Transfer

Mass Transfer
At 750°K and 1 atm, the approximate value of Schmidt number for air is

10
1
0.1
0.01

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Mass Transfer
Leaching of coffee from coffee beans is done by

Lime water
Hexane
Dilute H₂SO₄ (hot)
Hot water

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Mass Transfer
Separation of two volatile liquids by distillation makes use of their

Density difference
Solubility
Selectivity
Relative volatility

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Mass Transfer
Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.

Unbound
Critical
Free
Bound

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Mass Transfer
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Packed
Wetted wall
Bubble cap
Perforated tray

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Mass Transfer
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Liquid side
Gas side
Both liquid and gas side
Interfacial

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