Why is the formation of sulphate in calcination sometimes advantageous?
Carbon is a cheaper reducing agent than aluminium. Why is then aluminium used for reduction in some cases?
Why does carbon reduce copper oxide but not calcium oxide?
What types of ores are roasted?
Which metal is refined by Van Arkel Method?
What are the chief ores of iron?
What is wrought iron?
What is pig iron? What is its composition?
How is the cast iron obtained?
What is composition of cast iron?
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