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A mineral is called an ore if (a) The metal present in the mineral is costly (b) A metal can be extracted from it

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A mineral is called an ore if

(a) The metal present in the mineral is costly

(b) A metal can be extracted from it

(c) A metal can be profitably extracted from it

(d) A metal cannot be extracted from it.

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1 Answer

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(c) A metal can be profitably extracted from it.

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