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Process Equipment and Plant Design

Process Equipment and Plant Design
In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.

750-1000
50-75
200-250
25-50

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Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

1000-1500
100-150
43835
20-40

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Process Equipment and Plant Design
Bubble cap diameter used for the distillation column having diameter ranging from 1.5 to 4.5 metres is about __________ mm.

150
10
50
100

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Process Equipment and Plant Design
Baffles may be eliminated for

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

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Process Equipment and Plant Design
In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube?

Horizontal tube evaporator
Short tube vertical evaporator
None of these
Long tube vertical evaporator

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Process Equipment and Plant Design
The thermal stress in a metallic bar does not depend upon the

Neither A nor B
Cross-sectional area
Both A & B
Changes in temperature

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