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Chemical Engineering Basics

Chemical Engineering Basics
If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

25/2
23
21/3
23/2

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Chemical Engineering Basics
Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are

Cobalt, chromium & nickel
Molybdenun, tungsten & chromium
Cobalt, chromium & tungsten
Cobalt, zirconium & molybdenum

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Chemical Engineering Basics
Powder metallurgy is used to produce

High precision components with complex cavities and sharp features
Components of such alloys whose constituents do not form alloys readily
Porosity free components
Components of large size

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Chemical Engineering Basics
Alloys having more than 80% copper are generally more

Machinable
Corrosion resistant
Abrasion resistant
Prone to season cracking

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Chemical Engineering Basics
Which of the following is a unit of time ?

None of these
Barn
Angstrom
Light year

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Chemical Engineering Basics
Isotropic materials have the same __________ in all directions.

Induced stresses
Density
Thermal properties
Elastic properties

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