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Mass Transfer

Mass Transfer
The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line)

G/mL
ML/G
L/mG
LG/m

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Mass Transfer
Which of the following equipments is not used for gas dispersion?

Perforated sieve tray towers
Bubble cap tray towers
Agitated vessels
Spray towers

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

5 metres above ground
At ground level
2 metres above the ground
10 metres above ground

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Bollman extractor
Pachuka tank
Kennedy extractor
Hydrocyclones

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

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

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Mass Transfer
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

Electrical resistance
Strength
None of the listed here
Thermal conductivity

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