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Mass Transfer

Mass Transfer
The efficiency of a plate column will be maximum, when the flow is ideal __________ the plate.

Above
Across
Neither A nor B
Both A & B

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Mass Transfer
Flash distillation is suitable for separating the constituents of a binary system, which

Have very wide boiling points
Have very close boiling points
Form minimum boiling azeotrope
Form constant boiling azeotrope

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Mass Transfer
During sensible cooling process

Relative humidity decreases
Relative humidity increases
Wet bulb temperature decreases
Both B and C

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Mass Transfer
In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as

Ri = (1 - Re)/Re
Ri = Re/(1 + Re)
Ri = Re/(1 - Re)
Ri = Re

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Mass Transfer
Which of the following increases during evaporative cooling process with recirculated water supply?

Both B and C
Wet bulb temperature
Relative humidity
Partial pressure of vapour

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Mass Transfer
Dorr thickener is an equipment used for

Leaching
Clarification
Classification
Sedimentation

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