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Mass Transfer

Mass Transfer
When both the fluids flow concurrently in an absorber, the slope of the operating line is

1
+ ve
- ve
-1

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

Entrainment
Foaming
All of these
Weeping & dumping

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Mass Transfer
The suitable evaporator for concentration of foaming liquids is a __________ evaporator.

Long tube
Vacuum
Short tube
Falling film

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Mass Transfer
Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty?

Bubble cap column
Sieve plate column
Wetted wall column
Randomly packed column

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

Drift
Blowdown and leakage
Evaporation
All of these

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Mass Transfer
(NSh/NRe.NSc) is termed in mass transfer operation as the

Momentum diffusivity
Stanton number
Thermal diffusivity
Peclet number

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