Question

The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called ...................

• A. Roasting
• B. Calcination
• C. Reduction
• D. Smelting

Answer 1

Answer:

B. Calcination

• The process of heating a carbonate ore in the absence of air to convert it into metal oxide is indeed called Calcination.

• Calcination is a thermal treatment process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide. This process involves the decomposition of the carbonate ore, releasing carbon dioxide (CO₂) and leaving behind the metal oxide.

  The general equation for calcination is:

M₂CO₃ → 2MO + CO₂

Where M is a metal, such as calcium, magnesium, or zinc.

• Calcination is an important step in the extraction of metals from their ores, as it helps to purify the ore and prepare it for further processing.