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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Fluidisedbed
Spray
Rotary
Vacuum

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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.

Flash
Azeotropic
Extractive
Molecular

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Mass Transfer
All moisture in a non-hygroscopic material is the __________ moisture.

Unbound
Equilibrium
Free
Bound

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Mass Transfer
__________ extractor is used for the concentration of radioactive nuclear waste.

Pulsed column
None of the listed here
Mixer-settler
Seive plate

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Mass Transfer
In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as

Ri = Re/(1 + Re)
Ri = Re/(1 - Re)
Ri = Re
Ri = (1 - Re)/Re

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Mass Transfer
For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will

Remain same
Decrease
Data insufficient, can't be predicted
Increase

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