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Chemical Engineering Basics

Chemical Engineering Basics
The process of removal of scale formed during hot rolling of steel is termed as

Shot blasting
Descaling
Skimming
Pickling

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Chemical Engineering Basics
Which of the following will resist maxi-mum shock & vibration without cracking?

Grey cast iron
White cast iron
Graphite
Malleable iron

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

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

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Chemical Engineering Basics
Creep consideration is the most important in case of the

Cycle chains
Cast iron pipes
Blades of gas turbines
Steam engine flywheel

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Chemical Engineering Basics
Ultimate strength in tension as compared to that in shear for steel is

One third
One and half times
One fourth
Half

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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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