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Chemical Engineering Basics

Chemical Engineering Basics
Oxyacetylene reducing flame is used while carrying out welding on

Grey cast iron
High carbon steel
Alloy steel
Mild steel

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

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

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Chemical Engineering Basics
The basic function of the drum in a boiler is to

Separate steam from water
Remove settling impurities from steam
Act as a storage for feed water
Act as a storage for steam

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Chemical Engineering Basics
Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of

0.042361111111111
0.044444444444444
0.084027777777778
0.043055555555556

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Chemical Engineering Basics
Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

Re0.8, Re0.5
Re0.5, Re0.8
Re-0.8, Re0.5
Re0.8, Re-0.5

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

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

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