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Mass Transfer

Mass Transfer
The unit of volumetric diffusivity is

Cm²/sec
Cm/sec
Cm³/sec
Cm²/seC₂

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Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?

Fuller
Silica gel
Alumina
Activated carbon

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Mass Transfer
Heat sensitive materials like certain pharmaceuticals and food stuffs can be dried in a/an __________ dryer.

Indirect tray
Spray
None of these
Freeze

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Mass Transfer
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams

Increases
Remains unaffected
Passes through a maximum
Decreases

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

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

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Mass Transfer
For gas absorption, low viscosity solvents are preferred, because of their

Better flow characteristics
All of these
Rapid absorption rates
Low pumping pressure drop

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