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Mass Transfer

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

Tunnel
Festoon
Heated cylinder
Conveyor

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Bollman extractor
Pachuka tank
Hydrocyclones
Kennedy extractor

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Mass Transfer
Humid volume, at a given temperature is a/an __________ function of humidity.

Inverse
Linear
Exponential
Logarithmic

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Mass Transfer
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.

Wet-bulb
Dew point
Adiabatic saturation
Dry-bulb

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Mass Transfer
The drying time between fixed moisture content within diffusion controlled 'falling rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )

T³
T
√T
T²

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Mass Transfer
In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg)

10
6.89
8.25
8.89

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