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Mass Transfer

Mass Transfer
Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve.

78
50
100
None of these

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Mass Transfer
Separation of two volatile liquids by distillation makes use of their

Relative volatility
Density difference
Selectivity
Solubility

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Mass Transfer
In most of the vacuum crystalliser, vacuum is generally produced by means of a

Suction pump
None of these
Steam jet ejector with a barometric condenser
Compressed air jet

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Mass Transfer
Can a cooling tower cool water below the wet bulb temperature of inlet air?

Yes
No
Yes ; but height of cooling tower will be prohibitively high
Yes ; but the air flow rate should be excessively high

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

Silica gel
Wood charcoal
Activated clay
Bone charcoal

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Mass Transfer
In a moderately sized packed absorption tower, channeling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter

< 6:1
< 8 : 1
> 4 :1
> 8:1

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