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Mass Transfer

Mass Transfer
Cox chart is useful in the design of

Crystalliser
Evaporator
Dryer
Distillation column

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Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

1.25 to 2.0
0.5 to 0.8
0.8 to 1.2
2.5 to 3.5

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Mass Transfer
Molality is defined as the number of gm moles of solute per __________ of solvent.

Kg
Litre
Gm
m³

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Mass Transfer
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

3 to 4
5
1.2 to 1.5
2.5 to 3

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Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ D2
K ∝ D
K ∝ D1.5
K ∝ √D

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Mass Transfer
(NSh/NRe.NSc) is termed in mass transfer operation as the

Thermal diffusivity
Stanton number
Peclet number
Momentum diffusivity

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MORE MCQ ON Mass Transfer

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