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Mass Transfer

Mass Transfer
Danckwerts developed the __________ theory.

Film
None of these
Surface renewal
Penetration

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Mass Transfer
Antibiotics are best handled in a

Pulsed column extractor
Podbielniak extractor
Rotating disc contactor
Sieve tray contractor

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Mass Transfer
At constant pressure, with increase of temperature, the dew point will

Increase/decrease ; depends on the temperature
Increase
Decrease
Remain unchanged

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Mass Transfer
Unit of molal diffusivity is

Gm moles/cm² . sec
Gm moles/cm. sec
Gm moles/cm². sec
Cm²/sec gm . mole

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

Neither A nor B
Above
Both A & B
Across

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Mass Transfer
Mass transfer co-efficient of liquid is

None of these
Affected much less by temperature than that for gases
Not affected by the temperature
Affected more by temperature than that for gases

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