Q. Define the following terms:-
(i) Mineral (ii) Ore (iii) Gangue
(i) Mineral: Most of the elements occur in nature as in combined state as minerals. The
chemical composition of minerals is fixed.
(ii) Ore: Minerals from which metals can be extracted profitably are known as ores.
(iii) Gangue: The impurities (sand, silt, soil, gravel, etc.) present in the ore are called gangue.
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