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Mass Transfer

Mass Transfer
Which of the following is not a continuous drier?

Tray drier
Spray drier
Drum drier
Tunnel drier

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Mass Transfer
Which of the following is the most commonly used leaching solvent in vegetable oil industry?

Liquid SO₂
Hexane
Furfurol
Phenol

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Mass Transfer
The value of NA/(NA + NB) for steady state molecular diffusion of gas 'A' through non-diffusing gas 'B' is

2
∞
1
0.5

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Mass Transfer
Back-trapping in a distillation column

Increases tray efficiency
Reduces pressure drop
Decreases tray efficiency
Is desirable, as it provides improved vapour-liquid contact

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Mass Transfer
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is

Induced draft cooling tower
Natural draft cooling tower
Spray chamber
None of these

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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 = 0
q = 1
q > 1

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