Heating of an ore in the presence of air to remove impurities containing sulphur is called:

Calcination

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Roasting

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Smelting

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None of these

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Solution

The correct option is B
Roasting

Roasting is a process of heating of sulfide ore to a high temperature in presence of air. During roasting, the sulfide is converted to an oxide, and sulfur is released as sulfur dioxide, a gas.

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Similar questions

Calcination or Roasting will be done for the products of the smelting process to remove impurities.

C

C O

1.

2.

Calcination or Roasting will be done for the products of the ______ process to remove impurities.

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