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Question

The principle ore from which copper is extracted is copper ___.
  1. bauxite
  2. haematite
  3. cassiterite
  4. pyrite


Solution

The correct option is D pyrite
Copper pyrite, also known as chalcopyrite - is a brass-yellow mineral with the chemical formula CuFeS2. It occurs in most sulfide mineral deposits throughout the world and has been the chieflysignificant ore of copper for thousands of years

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