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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
An adequate clearance between the tray and the shell wall of a distillation column is provided to

Drain the liquid from the tray when the unit is not in operation
Allow for thermal expansion and facilitate installation
None of these
Avoid back-trapping

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Process Equipment and Plant Design
The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.

None of these
Yield point
Ultimate
Breaking

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Process Equipment and Plant Design
Baffles may be eliminated for

None of these
Low viscosity liquids (< 200 poise)
Large diameter tanks
High viscosity liquids (> 600 poise)

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Process Equipment and Plant Design
In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.

80
180
8
1

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Process Equipment and Plant Design
Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

28
38
19
16

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