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

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

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Mass Transfer
For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

Ternery mixture is represented by the sides
Binary mixture is represented by the apex
Binary mixture is represented by any point inside
Pure component is represented by the apex

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