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Mass Transfer

Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

0.6
1.5
-1.5
-0.6

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Mass Transfer
With increase in pressure, the relative volatility for a binary system

Increases
Remains same
Either A or B, depends on the system
Decreases

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Mass Transfer
Which of the following equipments is not used for gas dispersion?

Spray towers
Bubble cap tray towers
Agitated vessels
Perforated sieve tray towers

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

30-40
44119
90-100
70-80

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Either A, or B ; depends on the type of packing
Greater than
Equal to
Smaller than

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Mass Transfer
In a counter-current extractor, as the axial mixing increases, the extraction efficiency

Remains unchanged
Increases
Decreases
Depends on the pressure of the system

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