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Question

A mineral is called ore if


A

the metal extracted is costly

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B

the metal can be extracted from it

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C

a metal can be profitably extracted from it

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D

a metal can not be extracted from it

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Solution

The correct option is C

a metal can be profitably extracted from it


Explanation:

Ore:

  • “The entire scientific and technological process used for isolation of the metal from its ores is known as metallurgy.”
  • Metals that occur naturally in the earth's crust are called minerals.
  • “Out of many minerals in which a metal may be found, only a few are viable to be used as sources of that metal. Such minerals are known as ores.”
  • A mineral is called an ore if a metal is profitably extracted from it

Hence, the correct option is (C). A mineral is called ore if a metal can be profitably extracted from it.


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