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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?

Limestone
Coke
Iron ore
Sinter

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Chemical Engineering Basics
Carnot cycle is also termed as the constant __________ cycle in thermodynamics.

Heat
Pressure
Entropy
Volume

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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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Chemical Engineering Basics
__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.

Magnesia
Beryllia
Alumina
Zirconia

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Chemical Engineering Basics
In radiative heat transfer, a grey surface is the one, which has

Zero reflectivity
Equal brightness in all directions
Grey appearance to the eye
Emissivity independent of wavelength

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Chemical Engineering Basics
The best criterion for analysing an economic investment is the

Rate of return criterion
Future value method
Present value method
Salvage value

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