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Mass Transfer

Mass Transfer
Prandtl number for water at 20°C is about

7
70
150
0.7

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Mass Transfer
Absorption accompanied by heat evolution results in

None of these
Decrease in equilibrium solubility
Increased capacity of the absorber
Increase in equilibrium solubility

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Mass Transfer
Absorption factor method is used to calculate the number of ideal stages, when

Pressure drop in the column is very high
Both operating and equilibrium lines are parallel
Operating line lies below the equilibrium line
Operating line lies above the equilibrium line

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Mass Transfer
Selectivity of the solvent used in solvent extraction should be

1
> 1
< 1

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Mass Transfer
Sand is dried in foundaries in a___drier.

Rotary
Fluidisedbed
Vacuum
Spray

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Mass Transfer
Azeotropic distillation is employed to separate

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

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MORE MCQ ON Mass Transfer

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