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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following phenomenon/ phenomena is/are diffusion controlled ?

Cross-slip
Recrystallisation
Dislocation climb
Twinning

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Chemical Engineering Basics
Copper is not present as an alloying constituent in

Delta metal
Nichrome
Silicon bronze
Constantan

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Chemical Engineering Basics
Presence of small quantity of sulphur in low carbon steel improves its

Formability
Hardenarality
Weldability
Machinability

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Chemical Engineering Basics
Out of the following, the dimensionless quantity is

Specific weight
Mach number
Viscosity
Density

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Chemical Engineering Basics
Frost formation on the evaporator tubes in the domestic refrigerators

Causes heat loss due to poor heat transfer
Decreased compressor power
Can be prevented by proper design
Is immaterial

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

Forging
Powder metallurgy
Casting
None of these

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