Answers

2015-04-28T14:28:01+05:30
(i)The elements or compounds of the metals which occur in nature in the earth crust are called minerals.
example:- aluminium

(ii)The minerals from which the metals are extracted without economical loss are called ore.
example:- bauxite

(iii)The impurities like clay are called gangue.
example:- sand and soil.
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