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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following is a boiler accessory i.e., not a boiler mounting ?

Feed check valve
Stop valve
Blow off cock
Feed water pump

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Chemical Engineering Basics
Materials used for making permanent magnets containing iron and nickel are made by __________ technique.

Casting
None of these
Powder metallurgy
Forging

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

Steel
Stainless steel
Brass
Babbit metal

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Chemical Engineering Basics
Scaling occurs in boiler tubes due to the fact that, the solubility of Ca(OH)₂ __________ with increasing temperature.

Shows inversion of solubility
Decreases
Increases
None of these

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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.

Spinning
Lancing
Shot peening
Slugging

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Chemical Engineering Basics
Tempering of a material does not improve its

Machinability
Softness
Internal stress level
Toughness

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