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

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

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Mass Transfer
The wetted wall tower is used to determine

The overall M.T.C. of the system
M.T.C. of individual components in a liquid-liquid system
Individual mass transfer co-efficient (M.T.C.) in gaseous system
M.T.C. of liquid in liquid-gas system

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Mass Transfer
Inside the distillation column, the

Liquids are not always at their bubble points
Driving force for the vapour flow is the pressure drop
None of these
Pressure increases gradually from bottom to the top of the column

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