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Mass Transfer

Mass Transfer
What is the reflux ratio at total reflux?

Unity
Infinity
Data insufficient
Zero

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Mass Transfer
The critical moisture content in case of drying indicates the __________ rate period.

None of these
Beginning of falling
Beginning of constant
End of falling

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Mass Transfer
The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient)

KL².DA
KL/DA²
√(KL².DA)
KL²/DA

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Mass Transfer
In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated.

Flash
Azeotropic
Molecular
Extractive

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Mass Transfer
Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature)

Log P vs . T
T vs . P
P vs . log T
Log P vs. log T

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Mass Transfer
A good solvent used for absorption should not have very high

Viscosity
Vapor pressure
All of these
Freezing point

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MORE MCQ ON Mass Transfer

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