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Process Equipment and Plant Design

Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

80°
60°
20°
40°

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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)

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

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Process Equipment and Plant Design
What is the slope of the operating line in the stripping section of a distillation column?

< 1
> 1
?

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Process Equipment and Plant Design
__________ liquor is best handled in a long tube vertical evaporator.

Scaling
Viscous
Salting
Foamy

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Process Equipment and Plant Design
Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as

0.01
0.95
0.75
0.3

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Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

An increase in relatived volatility for rectification columns
An increase in liquid viscosity
All of these
Decrease in gas solubility for absorbers

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