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Chemical Engineering Basics

Chemical Engineering Basics
Isotropic materials have the same __________ in all directions.

Elastic properties
Thermal properties
Density
Induced stresses

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Chemical Engineering Basics
The phenomenon of strain-ageing is generally experienced with

High manganese steel
Cast iron
Low carbon steel
High carbon steel

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

NH₃
H₂SO₄
NaOH
HCl

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

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Chemical Engineering Basics
Filler material used in welding having the lowest melting point out of the following is

Aluminium
Brazing spelter
Soft solder
Silver solder

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

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

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