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Mass Transfer

Mass Transfer
Sticky material can be dried in a __________ dryer.

None of these
Tray
Rotary
Fluidised bed

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Mass Transfer
Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.

Free
Critical
Bound
Unbound

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Mass Transfer
Very tall packed towers are divided into series of beds to

Reduce the overall pressure drop
Avoid flooding
Avoid channelling
Reduce liquid hold-up

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Mass Transfer
In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.

Neither A nor B
Increases with increase in
Both A and B
Is one at unity value of

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Mass Transfer
Reverse osmosis is also called

Diffusion
Dialysis
Electrodilysis
Ultrafiltration

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Increases
Remains unaffected
Decreases
Decreases linearly

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