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Mass Transfer

Mass Transfer
Selectivity of the solvent used in solvent extraction should be

< 1
> 1
1

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Mass Transfer
Extraction of coffee from its seed is done by

Extractive distillation
Steam distillation
Liquid-liquid extraction
Leaching

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Mass Transfer
With increase in temperature, the leaching rate increases due to

Neither A nor B
Increased diffusivity
Decreased liquid viscosity
Both A & B

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Mass Transfer
For a distillation column operating at minimum reflux, the

Reflux ratio will be maximum
Concentration of liquid and vapour leaving a plate will be same
Number of plates required will be maximum
None of these

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

Silica gel
Bone charcoal
Activated clay
Wood charcoal

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Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

> 1
10-5 to 10-6
0.1
0.01

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