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Process Equipment and Plant Design

Process Equipment and Plant Design
Speed of industrial paddle agitator ranges from __________ rpm.

20 to 100
500 to 750
1000 to 2000
1 to 5

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Process Equipment and Plant Design
Bubble cap plate column is

Used only for distillation, not for absorption
A differential stage contactor
A finite stage contactor
A continuous contactor

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Process Equipment and Plant Design
Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have __________ roofs.

Flat
Floating
Fixed
Conical

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Process Equipment and Plant Design
__________ shaped roof is most commonly used for cylindrical tanks.

Cone
Dome
Umbrella
Flat

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Process Equipment and Plant Design
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)

1.2 Aa = 1.2 Sa
Aa = Sa
Aa = 1.5 Sa
Sa = 1.5 Aa

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Process Equipment and Plant Design
The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the

Smaller reactor should come first
Larger reactor should come first
Equal sized reactors are the best
None of these

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