Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of the distillation column.

None of these
Generally, a skirt clerance of 0.5" to 1.5' is recommended to prevent plugging of the slots by residue build up
If sufficient slot area is not provided, the gas may pass through the skirt clearance
The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a basket type evaporator.

The tube bundle is suspended on bracket
There is no central downtake
Downtake is formed by the annular space between the bundle and the shell
It is used for high viscosity liquor having large rate of scaling

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