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Process Equipment and Plant Design

Process Equipment and Plant Design
Vertical vessels are not supported by

Brackets
Saddles
Columns
Skirts

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Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

CO₂
NH₃
None of these
SO₂

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Process Equipment and Plant Design
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).

650
450
250
750

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Process Equipment and Plant Design
In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.

Increases
Remains same
None of these
Decreases

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Process Equipment and Plant Design
In a __________ rivetted joint, the rivets in the various rows are opposite to each other.

Diamond
None of these
Chain
Zig-zag

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Process Equipment and Plant Design
An adequate clearance between the tray and the shell wall of a distillation column is provided to

None of these
Avoid back-trapping
Allow for thermal expansion and facilitate installation
Drain the liquid from the tray when the unit is not in operation

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