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Mass Transfer

Mass Transfer
Ion exchange process is similar to

Extraction
Leaching
Absorption
Adsorption

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Mass Transfer
Which of the following operations does not involve leaching?

Dissolving sugar from the cells of the beet
Removing nicotine from its water solution by kerosene
Dissolving pharmaceutical products from bark or roots
Dissolving gold from ores

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Mass Transfer
The most common packing used in industrial operations is __________ rings.

Single spiral
Raschig
Lessing
Cross-partition

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Mass Transfer
Which of the following assumes constant molal vaporisation and overflow?

Ponchan-Savarit method
Enthalpy concentration method
McCabe-Thiele method
Plate absorption column

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Mass Transfer
The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called

Percolation
Elutriation or elution
None of these
Decoction

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB0.5, according to __________ theory.

Penetration
Film
None of these
Surface renewal

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