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Mass Transfer

Mass Transfer
Boiling point diagram is not affected by the ambient

Pressure
Humidity
Both B and C
Temperature

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Mass Transfer
Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are

10
9
8
1

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Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

Centrifugal
Plate
None of these
Packed

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Mass Transfer
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Increases linearly
Remains same
Increases
Decreases

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Mass Transfer
Molecular distillation is

Both B and C
For heat-sensitive materials
Very low pressure distillation
High temperature distillation

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Mass Transfer
Dried finished product sampled from various parts of a __________ dryer exhibits non-uniformity in the moisture content.

Rotary
Freeze
Tray
None of these

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