Materials and Construction
The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability?

Aluminium
Wrought iron
Copper
Lead

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Materials and Construction
Duriron is

Acid resistant, brittle and very hard
High silicon iron
All of these
Prone to breakage due to thermal expansion because of its very high co-efficient of thermal expansion

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