What is pig iron? What is its composition?

Which metal is refined by Van Arkel Method?

What are the chief ores of iron?

Why is the formation of sulphate in calcination sometimes advantageous?

What is composition of cast iron?

How is the cast iron obtained?

What types of ores are roasted?

Why does carbon reduce copper oxide but not calcium oxide?

What is wrought iron?

Carbon is a cheaper reducing agent than aluminium. Why is then aluminium used for reduction in some cases?