Engineering Materials
Combined carbon in iron makes the metal

Soft and gives coarse grained crystalline structure
Hard and gives a fine grained crystalline structure
Hard and gives a coarse grained crystalline structure
Soft and gives a fine grained crystalline structure

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Engineering Materials
Pick up wrong statement about wrought iron

It is made by adding suitable percentage of carbon to molten iron and subjecting the product to repeated hammering and rolling
It melts at 1535°C
It is very soft and ductile
It contains carbon of the order of 0 to 0.25%

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