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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

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

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Mass Transfer
Pick out the system with maximum boiling azeotrope at 1 atm.

None of these
Ethyl alcohol-water
Acetone chloroform
Benzene-ethyl alcohol

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB according to the __________ theory.

Surface-renewal
Film
Penetration
None of these

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Mass Transfer
The cooling effect in a cooling tower can not be increased by

Increasing the air velocity over the wet surfaces
Reducing the humidity of entering air
Lowering the barometric pressure
None of these

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Mass Transfer
Azeotropism for ethyl alcohol-water system disappears by

No means
Increasing pressure
Decreasing pressure
Increasing temperature

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Mass Transfer
In paper industry, paper is dried in a __________ dryer.

Tunnel
Heated cylinder
Festoon
Conveyor

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