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  • General Awareness - 2 (Sectional Officer)
  • Ore is heated in the absence of air in the process of
Multiple choice

Ore is heated in the absence of air in the process of

  1. roasting

  2. ore dressing

  3. calcination

  4. smelting

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Calcination is the process of subjecting a substance to the action of heat, without fusion, in absence of  air.

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