Iron is commonly found in the Earth’s crust in the form of an ore, usually an iron oxide.(a) True(b) FalseThis question was addressed to me in a job interview.My question comes from Steel and Iron Work in portion Rules and Methods of Measurement of Civil Engineering Drawing

Iron is commonly found in the Earth’s crust in the form of an ore, u

1.	Iron is commonly found in the Earth’s crust in the form of an ore, usually an iron oxide.(a) True(b) FalseThis question was addressed to me in a job interview.My question comes from Steel and Iron Work in portion Rules and Methods of Measurement of Civil Engineering Drawing
Answer» Correct CHOICE is (a) True Best explanation: Iron is extracted from iron ore by removing the oxygen through its combination with a PREFERRED chemical partner such as CARBON which is then lost to the atmosphere as carbon dioxide. This process, known as SMELTING, was FIRST applied to metals with lower melting points, such as tin, which melts at about 250 °C (482 °F), and copper, which melts at about 1,100 °C (2,010 °F), and the combination, bronze, which has a melting point lower than 1,083 °C (1,981 °F).

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