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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Clarification
Sedimentation
Leaching
Classification

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Mass Transfer
Fractional solvent extraction

Employs two solvents
Employs only one solvent
None of the listed here
Results in low interfacial tension

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Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

> 1
10-5 to 10-6
0.1
0.01

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Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Operating
Minimum
Total
Maximum permissible

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Smaller than
Equal to
Either A, or B ; depends on the type of packing
Greater than

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Mass Transfer
Pick out the system with minimum boiling azeotrope at 1 atm.

Hydrochloric acid-water
All of these
Ethyl alcohol-water
Benzene-toluene

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