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Engineering Materials

Engineering Materials
The bond formed by transferring electrons from one atom to another is called

Metallic bond
None of these
Ionic bond
Covalent bond

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Engineering Materials
The machinability of steel is increased by

Sulphur, graphite and aluminium
Phosphorous, lead and sulphur
Phosphorous and aluminium
Silicon and sulphur

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Engineering Materials
Chilled cast iron has

No graphite
A very high percentage of graphite
Graphite as its basic constituent of composition
A low percentage of graphite

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

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

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Engineering Materials
The hardness and tensile strength in austenitic stainless steel can be increased by

Hardening and cold working
Martempering
Full annealing
Normalizing

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Engineering Materials
Cast iron is a

Brittle material
Ductile material
Tough material
Malleable material

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