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Mass Transfer

Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

μ²
μ
√μ
1/μ

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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

0.2
0.175
0.25
0.4

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Mass Transfer
Leaching of coffee from coffee beans is done by

Hot water
Dilute H₂SO₄ (hot)
Hexane
Lime water

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Mass Transfer
__________ equation applies to diffusivities in liquids.

Hirschfelder
Wilke and Chang
None of these
Gilliland

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Mass Transfer
During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the

Liquid-gas interface
Liquid film
Gas film
None of these

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Mass Transfer
Dorr thickener is an equipment used for

Classification
Sedimentation
Leaching
Clarification

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