Extraction and uses of metals

What is the general term for a naturally occurring rock or mineral from which a metal can be profitably extracted?

What is the name of the process used to extract highly reactive metals like potassium and sodium?

Zinc can be used to coat iron nails to prevent them from rusting. (i) What is the name of this process?

How is stainless steel made?

How is the price of metal is affected?

What gas is used to reduce iron oxide in a blast furnace?