Process Equipment and Plant Design
A pipe is generally made of circular cross-section, because a circular cross-section has the

None of these
Lowest surface area requirement for a given volume
Both A & B
Higher structural strength

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Process Equipment and Plant Design
Overall tray efficiency of a distillation column is the ratio of the number of

Real trays required to the number of ideal trays required
Overall gas transfer units to the number of ideal trays required
Ideal trays required to the number of real trays required
None of these

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