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Chemical Engineering Basics

Chemical Engineering Basics
Friction factor for fluid flow in pipe does not depend upon the

Pipe length
Pipe roughness
Mass flow rate of fluid
Fluid density & viscosity

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Chemical Engineering Basics
Lime contains about 90% CaO. Percentage CaO present in limestone is about

50
80
25
70

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Chemical Engineering Basics
Brinell Hardness Number (BHN) for talc is approximately in the range of

100-150
1-5
20-30
200-250

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Chemical Engineering Basics
Dezincification is a form of corrosion, which specifically applies to

Brass
Babbit metal
Stainless steel
Steel

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Chemical Engineering Basics
Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as

Gr0.33, Gr0.25
Gr0.25, Gr0.33
Gr0.25, Gr
Gr, Gr0.25

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Chemical Engineering Basics
At the point of boundary layer separation in fluid flow, the

Velocity gradient is flat
Shear stress is maximum
Shear stress is zero
Density variation is maximum

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