Mass Transfer
The reciprocal of stripping factor is termed as

Selectivity index
Absorption factor
Murphree efficiency
Relative volatility

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Mass Transfer
Inside the distillation column, the

None of these
Pressure increases gradually from bottom to the top of the column
Driving force for the vapour flow is the pressure drop
Liquids are not always at their bubble points

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Mass Transfer
Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 x 10⁻³ kg mole/m².s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m² .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is

8.5 x 10⁻⁴
5.6 x 10⁻³
5.6 x 10⁻⁴
8.5 x 10⁻³

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