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Mass Transfer

Mass Transfer
For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.

Rotary
None of these
Tunnel
Tray

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Mass Transfer
Radioactive nuclear waste is treated in

Rotating-disc contactor
Mixer-settler extractor
Bollman extractor
Pulsed column extractor

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Mass Transfer
For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same.

Constant rate
Both A & B
Unsaturated surface
Neither A nor B

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Mass Transfer
The dimension of diffusivity is same as that of the

Density
Molal concentration
Kinematic viscosity
Velocity head

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Sherwood
Peclet
Lewis
Stanton

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Mass Transfer
With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas

Remains same
Increases
Decreases
Decreases linearly

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