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Mass Transfer

Mass Transfer
Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

> 10
1
1 to 5
5 to 10

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Mass Transfer
Langmuir equation is associated with

Steam distillation
Leaching
Multicomponent absorption
Adsorption

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Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Drun
Cylinder
Rotary
Freeze

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Mass Transfer
1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is

0.175
0.2
0.25
0.4

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Mass Transfer
Only small amount of evaporation of water produces large cooling effects because of its

None of these
Low viscosity
Large latent heat
Small latent heat

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Mass Transfer
The binary diffusivity in gases does not depend upon the

Pressure
Nature of the components
None of the listed here
Temperature

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