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Mass Transfer

Mass Transfer
If f = moles of vapour present per mole of feed, then the slope of feed line is

- (f - 1)/f
- f/(1 - f)
(1 - f)/f
- 1/f

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Mass Transfer
Hydrogenation of oil is carried out in a/an __________ in Vanaspati manufacturing plant.

Packed tower
Sieve tray column
Agitated vessel
Bubble cap column

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Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

Interface
Gas phase
All of these
Liquid phase

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Mass Transfer
Plate efficiency in a distillation column is reduced due to the __________ of liquid.

Foaming
Entrainment
All of these
Weeping & dumping

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Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mole fraction
Partial pressure
Mole ratio
None of these

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Mass Transfer
If a₁ and a₂ are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement.

a₁ = 0.5 a₂
a₁ = a₂
None of these
a₁ = 2a₂

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