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Question

Ores mined from the earth are usually contaminated with large amounts of impurities such as soil, sand, etc. They are called ____________.


  1. Sulphides   

  2. Minerals     

  3. Gangue     

  4. Flux


Solution

The correct option is C

Gangue     


Impurities found in ores mined from the earth are called gangue. It usually consists of large amounts of soil, sand etc.

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