Mass Transfer
With increase in temperature, the leaching rate increases because of the

Decreased viscosity of liquid
None of the listed here
Increased diffusivity
Both Decreased viscosity of liquid & Increased diffusivity

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Mass Transfer
Bollman extractor

Is a static bed leaching equipment
Employs only counter-current extraction
Is a centrifugal extractor
Is used for extraction of oil from oilseed

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