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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.

17-34
43929
88-105
52-68

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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 continuous contactor
A finite stage contactor

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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.

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

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Process Equipment and Plant Design
Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

0.5 to 0.6
0.1 to 0.25
0.3 to 0.5
0.65 to 0.80

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Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 16/NRe
f = 0.22 NRe0.05
f = 25/NRe
f = 0.04/NRe0.16

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Process Equipment and Plant Design
Scale up problem in design based on the similarity concept takes into account __________ similarity.

Geometrical
Dynamic
Kinematic
All of these

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