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Process Equipment and Plant Design

Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

52-68
17-34
43929
88-105

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Process Equipment and Plant Design
A 'rupture disc' is provided in chemical equipments as an accessory meant for

Avoiding vortex formation
Creating turbulence
Relieving excess pressure
Enhancing mixing rate

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Process Equipment and Plant Design
Hole diameter of the seive trays in the distillation column ranges from __________ mm.

4 to 8
L to 3
3 to 12.5
12.5 to 18.5

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Process Equipment and Plant Design
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around

0.55-0.85
0.35-0.75
0.4-0.6
0.1-0.2

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Process Equipment and Plant Design
Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

1.25
1.75
3.5
2.5

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Process Equipment and Plant Design
Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about __________ percent of the total thickness.

1 to 5
40 to 50
30 to 40
10 to 20

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