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Chemical Engineering Basics

Chemical Engineering Basics
In the Bayer's process, bauxite is digested under pressure using

HCl
NaOH
NH₃
H₂SO₄

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Chemical Engineering Basics
The stress at which a metal fails by fatigue lies

Near the fracture point of the stress-strain curve
In the elastic range
In the plastic range
None of these

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

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

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Chemical Engineering Basics
Angular displacement can be measured suitably by a

Stroboscope
Tachometer
Linear variable differential transducer (LVDT)
Shaft encoder

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Chemical Engineering Basics
The most suitable material of construction for a sewer to carry sewage under high pressure is

Steel
Asbestos cement
Stoneware
Cement concrete

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Chemical Engineering Basics
Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.

Hot rolling
Cold rolling
Forging
Casting

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