Mass Transfer
Which of the following adsorbant is used in the refinning of sugar?

Activated clay
Bone charcoal
Wood charcoal
Silica gel

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Mass Transfer
Molecular diffusion is caused by the

Transfer of molecules from low concentration to high concentration region
Activation energy of the molecules
Potential energy of the molecules
Thermal energy of the molecules

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Mass Transfer
Inside the distillation column, the

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

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