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Process Equipment and Plant Design

Process Equipment and Plant Design
Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

pD/6t
pD/2t
pD/3t
pD/4t

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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
Fresh water carrying pipelines in chemical industries are coloured with __________ color.

Sea green
Red
Yellow
Brown

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Process Equipment and Plant Design
Rivets are generally specified by the

Overall length
Shank diameter
Head diameter
None of these

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Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

NH₃
CO₂
SO₂
None of these

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Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

10000
3000
1000
5000

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