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Process Equipment and Plant Design

Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Laminar flow
Complete back mixing
Plug flow
Eddy diffusivity = 0

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Process Equipment and Plant Design
In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms.

30
10
20
35

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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.

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

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Process Equipment and Plant Design
For turbine agitator, the impeller diameter is about

0.3 to 0.5 d
0.1 to 0.2 d
0.95 d
0.65 to 0.85 d

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Process Equipment and Plant Design
__________ of water makes it a widely used coolant in heat exchangers.

High specific heat
Low corrosiveness
Low dirt factor
Low viscosity

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

Yellow
Blue
Black
Red

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