What is the role of Zn metal in the extraction of silver ?

What is the role of lime stane in the extraction of iron ?

What is the role of lime stone in the extraction of iron ?

What is the role of limestone in the extraction of iron from red haematite?

Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver?

What should be the considerations during the extraction of metals by electrochemical method?

Explain The element which is used in the extraction of gold and silver by cyanide process.