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Chromite, carbon and silicon carbide are classed as

  • A.insulating refractories
  • B.neutral refractories
  • C.acidic refractories
  • D.basic refractories

Answer: B

Being neither strongly acidic nor basic they resist attack from either kind of slag, which suits them to the boundary between an acid and a basic lining. Carbon and silicon carbide also conduct heat well, which is sometimes wanted and sometimes not.

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