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Engineering Materials

Engineering Materials
Hematite iron ore contains iron about

0.7
0.3
0.55
0.45

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Engineering Materials
The lower critical point for all steels is

723°C
700°C
913°C
600°C

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Engineering Materials
Corrosion resistance of steel is increased by adding

Nickel and molybdenum
Tungsten and sulphur
Aluminium and zinc
Chromium and nickel

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Engineering Materials
The elastic stress strain behavior of rubber is

No fixed relationship
Nonlinear
Plastic
Linear

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Engineering Materials
Cast iron is manufactured in

Cupola
Open hearth furnace
Bessemer converter
Blast furnace

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Engineering Materials
According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

0.4 to 0.6%
0.0004
0.6 to 0.8%
0.35 to 0.45%

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