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Mass Transfer

Mass Transfer
Rayleigh's equation applies to __________ distillation.

Continuous
Flash
Steam
Differential

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Mass Transfer
The Schmidt number which is defined as, μ/ρ D, is the ratio of the

None of these
Momentum diffusivity to the thermal diffusivity
Momentum diffusivity to the mass dif-fusivity
Thermal diffusivity to the mass diffusivity

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Mass Transfer
Small dia distillation column can be a

Packed column
Any of these
Sieve tray
Bubble cap

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Mass Transfer
Dry bulb temperature of unsaturated air is more than its __________ temperature.

Wet bulb
Dew point
Neither A nor B
Both A & B

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Mass Transfer
Can the efficiency of a plate in the distillation tower be greater than 100%?

Yes ; if the reflux ratio is maximum
Never
Normally not; but is possible if infinite number of plates are put
Yes

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Mass Transfer
Which of the following decreases during evaporative cooling process with recirculated water supply?

Partial pressure of vapour
Wet bulb temperature
Relative humidity
None of these

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