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Engineering Materials

Engineering Materials
The defect which takes place due to imperfect packing of atoms during crystallization is known as

Surface defect
Point defect
Line defect
None of these

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Engineering Materials
The presence of hydrogen in steel causes

Improved Weldability
Embrittlement
Corrosion resistance
Reduced neutron absorption cross-section

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Engineering Materials
An engineer's hammer is made of

Cast iron
High carbon steel
Forged steel
Mild steel

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Engineering Materials
The heat treatment process used for softening hardened steel is

Annealing
Carburising
Normalizing
Tempering

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Engineering Materials
Taps dies and drills contain carbon

Below 1%
Above 1%
Above 2.2%
Below 0.5%

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Engineering Materials
Silicon when added to copper improves

Strength and ductility
Machinability
Hardness
Hardness and strength

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