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Mass Transfer

Mass Transfer
The-relative volatility for separation of a non-ideal binary mixture by distillation should be

1
< 1
> 1

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Mass Transfer
In McCabe-Thiele method, at infinite reflux ratio

Neither A nor B
The overhead product is minimum
Both the operating lines coincide with diagonal
Both A & B

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Mass Transfer
Mass transfer co-efficient of liquid is

Affected much less by temperature than that for gases
Not affected by the temperature
None of these
Affected more by temperature than that for gases

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Mass Transfer
NSc/NPr is called the

Stantan number
Psychrometric ratio
Lewis number
Sherwood number

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

Evaporation
Absorption
Liquid extraction
Fractional crystallisation

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Mass Transfer
Which one of the following devices is not used for both the absorption as well as the liquid-liquid extraction processes?

Plate towers
Wetted wall columns
Packed towers
Spray towers

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