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KCET2011ChemistryGeneral Principles and Processes of Isolation of Metals

Which one of the following statements is false?

Options

  1. ADuring roasting, moisture is removed from the ore
  2. BThe ore is freed from almost all non-metallic impurities
  3. CCalcination of ore is carried out in the absence of any blast of air
  4. DThe concentrated zinc blende is subjected to calcination during its extraction by pyrometallurgy

Correct answer

D. The concentrated zinc blende is subjected to calcination during its extraction by pyrometallurgy

Step-by-step solution

In pyrometallurgy of Zn , ZnS is subjected to roasting.

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