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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following efficiencies can be greater than 100%?

Overall plate efficiency
Point efficiency
None of these
Murphree plate efficiency

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Process Equipment and Plant Design
1.2 to 3.8 cms is the value of the

Downcomer liquid seal in case of a balanced tray design
Skirt clearance for bubble caps
Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.)
All of these

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Process Equipment and Plant Design
Which of the following packing materials provides for maximum mass transfer?

Raschig rings
Cross-partition rings
All of these
Lessig rings

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Process Equipment and Plant Design
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

1.1 to 1.5
1.6 to 2
2.7 to 3
2.2 to 2.6

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Gas flow rate
Neither A nor B
Electrode area
Both A & B

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Process Equipment and Plant Design
Oxygen carrying pipelines in chemical industries are coloured with __________ colour.

Black
Red
Blue
Yellow

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