1.

Explain the following terms with suitable examples. (i)Gangue(ii)Slag

Answer»

Solution :(i)Gangue: The impurities ASSOCIATED with the minerals are known as Gangue or Matrix.
(ii)Slag:A compound FORMED when gangue is combined with FLUX is called slag.
Flux+Gangue `to`Slag
For example,the oxide of iron be reduced by carbon MONOXIDE as follows:
In this extraction a basic flux,limestone is used.
Since the silica gangue present in the ORE is acidic in nature,the limestone combines with it to form Calcium silicate(Slag).
`underset("Flux")(CaCO_(3))overset(Delta)toCaO+CO_(2)``underset(Flux)(CaO)+underset(Gangue)(SiO_(2))to2Fe3CO_(2)`


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