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Process Equipment and Plant Design

Process Equipment and Plant Design
Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.

20
10
5
30

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Process Equipment and Plant Design
Bubble cap plate column is

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

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Process Equipment and Plant Design
In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.

10 to 15
5 to 10
2.5 to 4.0
0.5 to 1.5

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Process Equipment and Plant Design
With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will

Remain unaffected
Increase
Decrease
Increase or decrease depending on the nature of the dust

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Process Equipment and Plant Design
The minimum baffle height should be

3/4 of the tank height
Twice the impeller diameter
Equal to the impeller diameter
Twice the tank diameter

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Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Δp = 1/G0.6
Δp = G2
Δp = G
Δp = G0.5

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