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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Leaching
Sedimentation
Classification
Clarification

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Mass Transfer
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.

Durability
Size
Cost
Porosity

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Mass Transfer
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.

Unbound
Bound
None of these
Critical

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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
Pulsed extractor
Mixer-settler extractor
Centrifugal extractor

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Mass Transfer
Which of the following is an undesirable characteristic for the solvent used in gas absorption?

Low viscosity
None of these
Low vapor pressure
High gas solubility

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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
Dry-bulb
Adiabatic saturation

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