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Engineering Materials

Engineering Materials
An engineer's hammer is made of

Forged steel
Mild steel
Cast iron
High carbon steel

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Engineering Materials
When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

White cast iron
Alloy cast iron
Nodular cast iron
Malleable cast iron

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Engineering Materials
Ductility of a material can be defined as

Ability to undergo large permanent deformations in compression
Ability to undergo large permanent deformations in tension
Ability to recover its original form
All of these

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Engineering Materials
Corrosion resistance of steel is increased by adding

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

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Engineering Materials
Manganese in steel increases its

Fluidity
Hardness
Tensile strength
Ductility

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Engineering Materials
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio

40 : 30 : 20 : 10
30 : 20 : 30 : 20
50 : 20 : 20 : 10
50 : 20 : 10 : 20

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