Engineering Materials
Smelting is the process of

Expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns
Reducing the ore with carbon in the presence of a flux
All of these
Removing the impurities like clay, sand etc. from the iron ore by washing with water

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Engineering Materials
Pick up wrong statement about wrought iron

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

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