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Process Equipment and Plant Design

Process Equipment and Plant Design
The thickness of segmental baffles (25 -35% cut truncated plates usually) is generally __________ the tube wall thickness.

Twice
Four times
Half
Equal to

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Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is

Tall (say 30 metres), but is full of liquid
Short (< 2 m) and housed indoor
Tall but empty
None of these

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Process Equipment and Plant Design
Theoretically calculated diameter of the stripping section of the continuous rectification column is __________ that of the enriching section.

More than
Same as
Either more or less (depending upon relative volatility)
Less than

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Process Equipment and Plant Design
Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is

More
Cither A or B; depends upon the I.D. of the pipe
Less
Same

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Process Equipment and Plant Design
Liquid redistribution should be done in a packed tower packed with raschig rings every 6 metres or __________ times the column diameter, whichever is lower.

2.5-3.0
5-7.5
15-20
10-12.5

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Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

None of these
Total cost consideration (fixed cost of the column plus the cooling water & steam cost)
Maximum permissible vapour velocity
Flooding limit of the column

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