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Mass Transfer

Mass Transfer
A good solvent used for absorption should not have very high

All of these
Viscosity
Freezing point
Vapor pressure

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Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Total
Operating
Maximum permissible
Minimum

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Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Twice
Equal to
More than
Half

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Mass Transfer
Flash distillation is suitable for separating the constituents of a binary system, which

Form constant boiling azeotrope
Have very wide boiling points
Have very close boiling points
Form minimum boiling azeotrope

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Mass Transfer
When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

?
1
> 1
< 1

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Mass Transfer
Very tall packed towers are divided into series of beds to

Reduce the overall pressure drop
Avoid channelling
Avoid flooding
Reduce liquid hold-up

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