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Mass Transfer

Mass Transfer
Rose oil is extracted from rose leaves using __________ distillation.

Extractive
Steam
Low pressure
High pressure

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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 ?

Gas side
Interfacial
Liquid side
Both liquid and gas side

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Mass Transfer
Drying operation under vacuum is carried out to

Dry materials having high bound moisture content
Increase drying temperature
Dry those materials which have very high unbound mositure content
Reduce drying temperature

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Mass Transfer
The boiling points of pure components of a binary system __________ with increase in total pressure of the system.

Increases
May increase or decrease, depends on the system
Remains unchanged
Decreases

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Mass Transfer
Sodium bicarbonate is produced during soda ash manufacture using a __________ tower.

Packed
None of these
Plate
Baffle

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Mass Transfer
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)

Parallel
Straight
Neither A nor B
Both A & B

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