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Mass Transfer

Mass Transfer
Large scale drying of wheat is done in a __________ dryer.

Spouted bed
Tray
Fluidised bed
Vacuum rotary

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Mass Transfer
With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency

May increase or decrease ; depends on individual design
Decreases
Remains same
Increases

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Mass Transfer
HETP is numerically equal to HTU, only when the operating line

And equilibrium lines are parallel
Is far from the equilibrium line
Lies above the equilibrium line
Lies below the equilibrium line

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

5 metres above ground
At ground level
10 metres above ground
2 metres above the ground

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Mass Transfer
Which of the following provides maximum contact surface for a liquid-vapour system?

Packed tower
Wetted wall column
Seive-plate column
Bubble-cap plate column

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Mass Transfer
Reverse osmosis is also called

Electrodilysis
Diffusion
Ultrafiltration
Dialysis

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