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Process Equipment and Plant Design

Process Equipment and Plant Design
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always

Equal to the order of reaction
1
< 1
>1

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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

0.3
0.01
0.75
0.95

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Process Equipment and Plant Design
The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm.

Equal to
One fourth
Half
Three fourth

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Process Equipment and Plant Design
The minimum baffle height should be

Twice the impeller diameter
3/4 of the tank height
Twice the tank diameter
Equal to the impeller diameter

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Process Equipment and Plant Design
Welded joint efficiency in the design of chemical process equipment is taken as

0.75
0.55
0.95
0.85

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Process Equipment and Plant Design
__________ closure is the weakest enclosure for cylindrical vessels.

Torispherical
Hemispherical
Elliptical
Conical or flat plate

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