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Mass Transfer

Mass Transfer
An azeotropic mixture is a __________ mixture.

None of these
Constant boiling point
Binary
Ternary

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Mass Transfer
The most efficient cooling tower out of the following is

Atmospheric
Natural draft
Induced draft
Forced draft

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Mass Transfer
Make up water is required in a cooling tower to replace the water lost by

Drift
Evaporation
All of these
Blowdown and leakage

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Mass Transfer
When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.

Dependent on the system; can be either lower or higher than
Always lower than
Always higher than
Same as

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Mass Transfer
The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient)

KL/DA²
KL².DA
√(KL².DA)
KL²/DA

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Mass Transfer
Separation of two or more components of a liquid solution can not be achieved by

Absorption
Evaporation
Fractional crystallisation
Liquid extraction

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