Question

A mineral is called ore if

• A. the metal extracted is costly
• B. the metal can be extracted from it
• C. a metal can be profitably extracted from it
• D. a metal can not be extracted from it

Answer 1

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.