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Mass Transfer

Mass Transfer
When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

> 1
1
< 1
?

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Mass Transfer
The caking of crystals can be prevented by

Maintaining low critical humidity
Maintaining high critical humidity
Both A and C
Coating the product with inert material

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Mass Transfer
Azeotropic distillation is employed to separate

Heat sensitive materials
High boiling mixture
Constant boiling mixture
Mixture with very high relative volatility

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Mass Transfer
At a fixed total pressure, humidity depends only on the

Density of the vapour
None of these
Heat capacity of the vapour
Partial pressure of vapour in the mixture

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Mass Transfer
The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or "outgassed" adsorbent to from a definite concentration of adsorbate is called its

Heat of normal condensation
Heat of wetting
Differential heat of adsorption
Integral heat of adsorption

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

Bollman extractor
Hydrocyclones
Kennedy extractor
Pachuka tank

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