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Materials and Construction

Materials and Construction
A material is able to retain the deformation permanently by virtue of its

Ductility
Malleability
Plasticity
Elasticity

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Materials and Construction
A metallic alloy in which one of the constituent metal is __________ , is called an amalgam.

Lead
Tin
Mercury
Zinc

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Materials and Construction
Kel-F is a material, which is

Having elastomeric properties
Having excellent chemical & high temperature resistance (upto 200°C)
Chemically known as polychlorotrifluor-oethylene (PTFE)
All of these

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Materials and Construction
__________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working.

Strain ageing
Screw dislocation
Solid solution hardening
Twinning

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Materials and Construction
Steel balls for ball bearings are generally made of __________ steel.

Cast
Stainless
Carbon chrome
Free carbon

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Materials and Construction
Wood is corroded by

All of these
Chlorine (dry or wet)
Hydrochloric acid
SO₂ (dry or wet)

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