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

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

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Mass Transfer
To get high tray efficiency

Interfacial surface between liquid and gas phase should be large
Gas velocity should be very low
Liquid entrainment should be severe
Time of contact between the two phases should be less

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Mass Transfer
For water-ethanol system, the minimum reflux ratio

Is the optimum reflux ratio
Cannot be computed
Is computed from the slope of the upper operating line that is tangent to the equilibrium curve
Is computed from the intercept of the operating line

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Mass Transfer
Which of the following processes is not an example of adsorption applied to gaseous separations?

Decolouration of yellow glycerene
Dehumidification of air and gas
Removal of objectionable odour and impurities from industrial gases
Recovery of valuable solvent vapors from dilute mixture with air and other gases

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