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Mass Transfer

Mass Transfer
When both the fluids flow concurrently in an absorber, the slope of the operating line is

-1
- ve
1
+ ve

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Mass Transfer
When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.

Continuous
Azerotropic
None of these
Steam

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Mass Transfer
Which of the following solutions will follow Raoult's law most closely?

35% solution of NH₃ in water
A solution of polar organic compounds (not of homologs of a series)
A solution of benzene, toluene and oxylene
35% solution of camphor in water

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Remains unaffected
Decreases
Decreases linearly
Increases

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Mass Transfer
Weeping in a distillation column

Results due to very high gas velocity
Results due to very low gas velocity
Increases tray efficiency
Provides large interfacial surface for mass transfer

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Mass Transfer
With increase in temperature, the leaching rate increases due to

Neither A nor B
Both A & B
Decreased liquid viscosity
Increased diffusivity

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