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Mass Transfer

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

Same
Unpredictable
Less
More

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Mass Transfer
Wetted wall tower experiment determines the

Volumetric co-efficient
Molal diffusivity
Mass transfer co-efficient
None of these

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Mass Transfer
Which is the controlling factor for a drum drier?

Heat transfer
Both A & B
Diffusion
Neither A nor B

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Mass Transfer
Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure.Nitrobenzene will distill off __________ °C.

At > 210.6
None of the listed here
At < 100
Between 100 and 210

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Mass Transfer
__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.

Dry bulb
Dew point
Wet bulb
None of these

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q = 0
q > 1
q = 1
q < 1

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