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Chemical Engineering Basics

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

NH₃
NaOH
HCl
H₂SO₄

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Chemical Engineering Basics
Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as

Gr0.25, Gr0.33
Gr0.33, Gr0.25
Gr, Gr0.25
Gr0.25, Gr

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Chemical Engineering Basics
Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

None of these
Conductor
Semi-conductor
Insulator

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Chemical Engineering Basics
A cylinderical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson's ratio of the rod is

0.33
0.44
0.25

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Chemical Engineering Basics
The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

55
75
25
35

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Chemical Engineering Basics
Which of the following metals is the most prone to work hardening?

Brass
Aluminium
Lead
Copper

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