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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
______ is the separation technique used for desalination of sea water.

Absorption
Adsorption
Reverse osmosis
Thermal diffusion

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Mass Transfer
Reboiler is considered as one theoretical plate, because

Reboiler itself contains one plate
Vapour is recycled to the column
None of these
Of the assumption that vapour and liquid leaving the reboiler are in equilibrium

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Mass Transfer
For a binary mixture with low relative volatility, continuous rectification to get pure products will require

High reflux ratio
Less number of trays
Low reflux ratio
Small cross-section column

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Mass Transfer
Absorption accompanied by heat evolution results in

Increased capacity of the absorber
Decrease in equilibrium solubility
None of these
Increase in equilibrium solubility

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Mass Transfer
Which of the following adsorbant is used in the refinning of sugar?

Wood charcoal
Bone charcoal
Activated clay
Silica gel

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