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Mass Transfer

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

Heated cylinder
Conveyor
Tunnel
Festoon

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

Remains same
Increases
Decreases linearly
Decreases

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Mass Transfer
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)

Parallel
Neither A nor B
Straight
Both A & B

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Mass Transfer
The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient)

KL².DA
√(KL².DA)
KL/DA²
KL²/DA

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Mass Transfer
During sensible cooling process

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

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Mass Transfer
If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent.

> 100
100
None of these
< 100

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MORE MCQ ON Mass Transfer

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