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Mass Transfer

Mass Transfer
If f = moles of vapour present per mole of feed, then the slope of feed line is

- f/(1 - f)
- (f - 1)/f
(1 - f)/f
- 1/f

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Mass Transfer
In physical terms, Schmidt number means

Thermal diffusivity/momentum diffusivity
Thermal diffusivity/mass diffusivity
Momentum diffusivity/mass diffusivity
Mass diffusivity/thermal diffusivity

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Mass Transfer
Weight of 1 m³ of humid air as compared to 1 m³ of dry air, under the same conditions, is

Unpredictable
More
Same
Less

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Mass Transfer
CO₂ can be absorbed by

Cold Ca(OH)₂
Alumina
Hot cupric oxide
Heated charcoal

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Mass Transfer
Paper industry employs __________ driers.

Spray
Cylinder
Fluidised bed
Rotary

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Mass Transfer
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)

Parallel
Both A & B
Neither A nor B
Straight

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