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Mass Transfer

Mass Transfer
Leaching of sugar from sugar beets is done by

Dilute H₂SO₄
Hexane
Hot water
Lime water

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Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

≤ 1
> 1
1
< 1

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Mass Transfer
If f = moles of vapour present per mole of feed, then the slope of feed line is

(1 - f)/f
- (f - 1)/f
- 1/f
- f/(1 - f)

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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

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

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Mass Transfer
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

Free
Equilibrium
Unbound
Bound

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Mass Transfer
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)

Parallel
Both A & B
Neither A nor B
Straight

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