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Process Equipment and Plant Design

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

Blue
Yellow
Red
Black

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Process Equipment and Plant Design
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by

Di, opt = 7.6 Q0.36 . ρ0.9
Di, opt = 3 Q0.36 . ρ1.86 μ0.08
Di, opt = 3.9 Q0.45 . ρ0.23
Di, opt = 3 Q0.36 ρ0.18

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Process Equipment and Plant Design
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation

Increases capacity
Increases economy
Both B & C
Does not affect the capacity

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Process Equipment and Plant Design
A pipe is generally made of circular cross-section, because a circular cross-section has the

Both A & B
None of these
Lowest surface area requirement for a given volume
Higher structural strength

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Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

Minimum and infinity
Zero and infinity
Zero and one
None of these

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Process Equipment and Plant Design
The ratio of shear stress to shear strain is called

Shear modulus
Modulus of elasticity
Bulk modulus
Modulus of rigidity

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