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Loss on ignition is determined by

  • A.comparing its colour before and after firing
  • B.counting the crystalline phases present
  • C.weighing a sample before and after firing it
  • D.measuring the gas evolved during firing

Answer: C

The difference in mass is expressed as a percentage of the original and includes water, carbon dioxide and any organic matter. It is one of the simplest and most informative tests available on an incoming raw material.

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