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Chemical Engineering Basics

Chemical Engineering Basics
The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

None of these
Full annealing
Patenting
Bright annealing

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Chemical Engineering Basics
Factor of safety is the ratio of the __________ stress to the working stress.

Bearing
Yield
Tensile
Compressive

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Chemical Engineering Basics
For hardening high alloy steel, it is to be heated slowly and uniformly to avoid

Scale formation
Local hardening
Segregation
Warpage

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

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

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Chemical Engineering Basics
Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

SiO₂
P
MnO₂
Al2O₃

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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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