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Chemical Engineering Basics

Chemical Engineering Basics
Which one is neutral in character ?

N₂O₃
N₂O
N₂O₅
N₂O₄

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Chemical Engineering Basics
On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is

Creep
Toughness
Fatigue
Tensile strength

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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
Martensite formation
Relatively high sulphur content in the base metal

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Chemical Engineering Basics
Atomic __________ of an element is a whole number.

Weight
Volume
Radius
Number

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Chemical Engineering Basics
Shaft/rotor speed is most accurately measured by a

Speedometer
Frequency counter
Tachometer
Strobometer

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

Slugging
Shot peening
Lancing
Spinning

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