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Mass Transfer

Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

90
95
99
91.5

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Mass Transfer
Which is the controlling factor for a drum drier?

Diffusion
Heat transfer
Both A & B
Neither A nor B

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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
Absorption accompanied by heat evolution results in

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

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Mass Transfer
With increase in the concentration of the adsorbate, the integral heat of adsorption

May increase or decrease ; depends on the type of adsorbate
Decreases
Increases
Remains unchanged

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Mass Transfer
Packed column distillation is limited to the column __________ metres.

Height < 6
Diameter < 0.6
Both A & B
Neither A nor B

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