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Engineering Materials

Engineering Materials
Iron ore is usually found in the form of

Sulphides
Oxides
All of these
Carbonates

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Engineering Materials
Shock resisting steels should have

Low hardness
Low tensile strength
Low wear resistance
Toughness

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Engineering Materials
White metal contains

Silver and chromium
88% copper and 10% tin and rest zinc
Alloy of tin, lead and cadmium
63 to 67% nickel and 30% copper

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Engineering Materials
Cast iron is characterized by minimum of following percentage of carbon

0.002
0.02
0.013
0.008

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Engineering Materials
Pig iron is the name given to

Iron in molten form in the ladles
Iron containing huge quantities of carbon
Raw material for blast furnace
Product of blast furnace made by reduction of iron ore

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Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Sulphur
Phosphorus
Silicon
Manganese

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