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Chemical Engineering Basics

Chemical Engineering Basics
__________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.

Slugging
Spinning
Shot peening
Lancing

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Chemical Engineering Basics
'Flare tower' used in industry is meant for

Cooling of furnace exhaust gases
Absorbing the pollutant gases from the furnace exhaust
None of these
Venting off (after burning) the excess inflammable/toxic gases at high pressure

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Chemical Engineering Basics
The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

75
25
35
55

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Chemical Engineering Basics
The stress at which a metal fails by fatigue lies

In the elastic range
None of these
In the plastic range
Near the fracture point of the stress-strain curve

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Chemical Engineering Basics
__________ test can be termed as the semi-distructive test.

Torsion
Charpy
Hardness
Impact

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Chemical Engineering Basics
Cold cracking in the heat affected zone of a high strength steel weld can take place because of the

Sufficient hydrogen present in the welding arc
Retained austenite
Relatively high sulphur content in the base metal
Martensite formation

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