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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Classification
Clarification
Sedimentation
Leaching

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Mass Transfer
When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.

Pressure falls
Temperature rises
Temperature falls
Pressure rises

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Mass Transfer
Mass transfer co-efficient is defined as

Flux = Co-efficient/concentration difference
Flux=concentration difference/co-effi-cient
None of the listed here
Co-efficient = Flux/concentration difference

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Mass Transfer
In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated.

Azeotropic
Molecular
Flash
Extractive

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Mass Transfer
Which of the following is not a continuous drier?

Spray drier
Tunnel drier
Tray drier
Drum drier

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Mass Transfer
Use of packed towers for distillation is generally limited to the

Multicomponent distillation
High pressure operation
Vacuum distillation
Small sizes

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