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

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

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Process Equipment and Plant Design
Bubble cap tray is the most commonly used tray in large distillation column, because

It eliminates the foaming and entrain-ment tendency during operation
It incurs less pressure drop as compared to any other try designed for the same duty
None of these
Of its flexibility and nearly constant efficiency under varying conditions of operation

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