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In the extraction of iron, which compound is primarily used as a flux?

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Question: In the extraction of iron, which compound is primarily used as a flux?

Options:

  1. Limestone
  2. Silica
  3. Alumina
  4. Magnesia

Correct Answer: Limestone

Solution: 

Limestone is used as a flux in the extraction of iron to remove impurities as slag.

In the extraction of iron, which compound is primarily used as a flux?

Practice Questions

Q1
In the extraction of iron, which compound is primarily used as a flux?
  1. Limestone
  2. Silica
  3. Alumina
  4. Magnesia

Questions & Step-by-Step Solutions

In the extraction of iron, which compound is primarily used as a flux?
  • Step 1: Understand what a flux is. A flux is a substance added to help remove impurities during a chemical process.
  • Step 2: Know that iron is extracted from its ore, which contains impurities.
  • Step 3: Identify the common flux used in the extraction of iron.
  • Step 4: Learn that limestone is the primary flux used in this process.
  • Step 5: Understand that limestone helps to combine with impurities to form slag, which can be easily removed.
  • Flux in Metallurgy – A flux is a substance added to a metallurgical process to promote the melting and removal of impurities.
  • Role of Limestone – Limestone (calcium carbonate) is used in the extraction of iron to react with impurities and form slag.
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