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Mass Transfer

Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Drun
Rotary
Cylinder
Freeze

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Mass Transfer
At minimum reflux ratio for a given separation

Number of plates is zero
Separation is most efficient
Number of plates is infinity
Minimum number of the theoretical plates is required

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Mass Transfer
Calculation of mass transfer co-efficient is mostly/normally done using __________ theory.

None of the listed here
Penetration
Film
Surface renewal

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Mass Transfer
At 750°K and 1 atm, the approximate value of Schmidt number for air is

0.01
10
0.1
1

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Mass Transfer
For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause __________ plate requirement.

Marginal decrease in the number of
None of the listed here
Major decrease in the number of
No change in theoretical

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Mass Transfer
In distillation columns, the number of bubble caps per tray primarily depends upon the

Allowable gas and liquid velocities
Feed composition
Allowable gas velocity
Allowable liquid velocity

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