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Mass Transfer

Mass Transfer
According to Chilton-Colburn analogy for mass transfer, NSt.NSc2/3 is equal to

2f
F/2
F
1/f

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Mass Transfer
The caking of crystals can be prevented by

Maintaining high critical humidity
Coating the product with inert material
Maintaining low critical humidity
Both A and C

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Mass Transfer
The relative volatility of a binary mixture at constant temperature __________ the total pressure.

Decreases with increase in
Increases with increase in
None of these
Is independent of

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Kennedy extractor
Hydrocyclones
Pachuka tank
Bollman extractor

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Mass Transfer
Reboiler is considered as one theoretical plate, because

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

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Mass Transfer
Desulphurisation of petrol is done in a

Rotating disc extractor
Plate type extraction column
Bollman extractor
Packed extraction column

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