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Mass Transfer

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

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

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Mass Transfer
In distillation columns, the number of bubble caps per tray primarily depends upon the

Allowable liquid velocity
Feed composition
Allowable gas and liquid velocities
Allowable gas velocity

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

2.5 to 3
1.2 to 1.5
5
3 to 4

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q < 1
q > 1
q = 0
q = 1

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Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?

Silica gel
Fuller
Alumina
Activated carbon

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Mass Transfer
Steady state equimolal counter diffusion occurs in case of

Leaching
Binary phase distillation
Absorption
Liquid-liquid extraction

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