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Mass Transfer

Mass Transfer
Paper industry employs __________ driers.

Rotary
Cylinder
Fluidised bed
Spray

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Mass Transfer
The temperature of water cooled in cooling tower is always __________ temperature of entering air.

Equal to the dry bulb
Less than the wet bulb
More than the wet bulb
Equal to the wet bulb

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Mass Transfer
McCabe-Thiele method of binary distillation does not assume that the

None of these
Heat of mixing is negligible
Sensible heat changes are negligible compared with latent heat changes
Molar latent heats of all components are equal

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

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

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Mass Transfer
Absorption accompanied with chemical reaction is exemplified by the absorption of

SO₂ in alkaline solution
Benzol present in coke oven gas by wash oil
Ammonia in water
All of these

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Mass Transfer
Which of the following is the most suitable for extraction in a system having very low density difference?

Packed extraction tower
Mixer-settler extractor
Centrifugal extractor
Pulsed extractor

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