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Mass Transfer

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

0.05
50
5
0.5

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Mass Transfer
The most economical range of absorption factor is

2 to 2.5
5 to 10
1.25 to 2
2.5 to 3

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Mass Transfer
In physical terms, Schmidt number means

Momentum diffusivity/mass diffusivity
Thermal diffusivity/momentum diffusivity
Thermal diffusivity/mass diffusivity
Mass diffusivity/thermal diffusivity

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Mass Transfer
The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the

Integral heat of adsorption
Heat of wetting
None of these
Differential heat of adsorption

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Kennedy extractor
Pachuka tank
Bollman extractor
Hydrocyclones

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Mass Transfer
In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve)

None of these
Decreases
Remains unchanged
Increases

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