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Chemical Engineering Basics

Chemical Engineering Basics
Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

3
5
7
1.5

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Chemical Engineering Basics
Sub zero treatment of steel is done to

Suppress martensite transformation
Reduce the retained austenite in hardened steel
Induce temper brittleness after its hardening
Enhance its working performance in sub zero atmosphere

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Chemical Engineering Basics
Lead is added to 60:40 brass primarily to improve

Strength
Machinability
Fluidity
Corrosion resistance

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Chemical Engineering Basics
Stretcher strains found in a low carbon sheet are associated with the

Texture
Thickness of the sheet
Dislocation density
Yield point phenomenon

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Chemical Engineering Basics
In the Bayer's process, bauxite is digested under pressure using

H₂SO₄
HCl
NH₃
NaOH

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

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

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