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Process Equipment and Plant Design

Process Equipment and Plant Design
Fresh water carrying pipelines in chemical industries are coloured with __________ color.

Yellow
Brown
Red
Sea green

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Process Equipment and Plant Design
The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

18
6
34
12

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Process Equipment and Plant Design
Most of the storage vessels/tanks are made cylindrical, because of the fact that a cylinder

Neither A nor B
Both A & B
Is easy to fabricate
Has greater structural strength

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Process Equipment and Plant Design
Normally, the plate thickness of the bottoms and roofs of vertically cylindrical storage vessels as compared to that of the cylindrical shell is

Same
More or less depending upon the pressure & temperature inside the vessel and the nature of the fluid contained therein
More
Less

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Process Equipment and Plant Design
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)

Sa = 1.5 Aa
1.2 Aa = 1.2 Sa
Aa = 1.5 Sa
Aa = Sa

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

Back trapping
All of these
Gas blowing beneath cap skit
Maldistribution of gas

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