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Mass Transfer

Mass Transfer
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

Packed
Spray
Tray
Bubble

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Mass Transfer
H₂S present in naphtha reformed gas is removed by absorbing with

Vacuum gas oil
HCl
K₂CO₃
Ethanolamine

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

5 metres above ground
10 metres above ground
2 metres above the ground
At ground level

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Mass Transfer
Stefan's law describes the mass transfer by

Both A & B
Diffusion
Neither A nor B
Bulk flow

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Mass Transfer
Leaching rate is independent of the

Temperature
Agitation
None of the listed here
Particle size

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Mass Transfer
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

0.24
1
3.97
600

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