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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following packing materials provides for maximum mass transfer?

Lessig rings
Cross-partition rings
All of these
Raschig rings

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

< 0.5
1.2
1
0.85

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Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Complete back mixing
Laminar flow
Plug flow
Eddy diffusivity = 0

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Process Equipment and Plant Design
Larger depth of liquid on the trays of a distillation column

Neither A nor B
Results in higher pressure drop per tray
Both A & B
Leads to high tray efficiency

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

Sea green
Red
Yellow
Brown

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Process Equipment and Plant Design
Frame thickness in the plate and frame filter press is normally in the range of __________ inches.

0.25 to 4
1 to 12
0.25 to 8
1 to 5

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