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Mass Transfer

Mass Transfer
Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

1
5 to 10
1 to 5
> 10

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Mass Transfer
In a binary system, separation is very efficient, when the relative volatility is

0.5
< 1
> 1
1

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Mass Transfer
With increase in temperature, the leaching rate increases because of the

Decreased viscosity of liquid
Both Decreased viscosity of liquid & Increased diffusivity
Increased diffusivity
None of the listed here

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

44119
30-40
70-80
90-100

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q < 1
q = 1
q = 0
q > 1

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Mass Transfer
Pore size of the molecular seive 5A is __________ mm.

0.5
5
50
0.05

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