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Mass Transfer

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

Heated cylinder
Tunnel
Conveyor
Festoon

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

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

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

Mixer-settler extractor
Pulsed extractor
Packed extraction tower
Centrifugal extractor

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Mass Transfer
At minimum reflux ratio for a given separation

Separation is most efficient
Number of plates is zero
Number of plates is infinity
Minimum number of the theoretical plates is required

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Mass Transfer
The critical moisture content in case of drying indicates the __________ rate period.

Beginning of constant
Beginning of falling
None of these
End of falling

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Mass Transfer
A minimum boiling azeotrope is exemplified by

Toluene-benzene
Water-isobutyl alcohol
None of these
Acetone-carbon disulphide

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