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Mass Transfer

Mass Transfer
Rayleigh's equation applies to __________ distillation.

Flash
Steam
Continuous
Differential

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Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

μ
μ²
1/μ
√μ

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Remains unaffected
Decreases linearly
Increases
Decreases

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Mass Transfer
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.

Dew point
Adiabatic saturation
Dry-bulb
Wet-bulb

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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

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

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Mass Transfer
Pick out the correct relationship. (where, Ri = internal reflux ratio Ro = external reflux ratio. )

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

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