1.

Which one of the following metal , is extraced on smelting of its ore in blast furnance ?A. ironB. SodiumC. PotassiumD. magnesium

Answer» Correct Answer - A
When smelting is done in a blast furnance the metal extracted is iron which is shown by the following reaction .
`Fe_(2)O_(3) +3C overset( gt 1123K)to 2Fe+3CO`
`Fe_(2)O_(3)+3CO overset(1123K)to 2Fe+3CO_(2)`


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