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Class X Sciences

[papers from previous years]

Explain the following terms by giving one example of each.

(i) Mineral
(ii) Ore
(iii) Gangue


(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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