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Process Equipment and Plant Design

Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Low reflux ratio
Low gas velocity
High gas velocity
Excessive liquid gradient over the tray

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Process Equipment and Plant Design
The type of stress developed in a metallic bar on subjecting it to a change in temperature without allowing it to be deformed is __________ stress.

Compressive
Thermal
Tensile
Shear

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

Sea green
Brown
Red
Yellow

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Process Equipment and Plant Design
The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)

-q/(1-q)
-q/(q-1)
-q
None of these

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Process Equipment and Plant Design
Hold up of material in a operating rotary drier is in the range of

0.25 to 0.50
0.05 to 0.15
0.8 to 0.9
0.5 to 0.8

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Process Equipment and Plant Design
Spherical shaped pressure vessel is considered to be the most ideal, because it can

Be fabricated very easily
Withstand higher pressure for a given metallic shell thickness
Be supported very easily
Be designed without wind load considerations

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