What is flux? in chem

CBSE Class 12
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what is flux? in chem

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Flux is the substance added during the extraction of metals.On heating it reacts with the earthly impurities(gangue) to form fusible (molten) mass known as slag. They may be acidic or basic in nature.

  • Acidic flux are is used to remove the basic impurities
    For example silica.
  • Basic fluxes are used to remove acidic impurities
    For example -Lime.