Multiple choice

In the extraction of iron from haematite, the charge used is haematite, coke and lime stone in the following weight ratio.

  1. $1:1:1$
  2. $8:4:1$
  3. $8:1:4$
  4. $1:4:8$
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B Correct answer
Explanation

In the blast furnace extraction of iron, the typical weight ratio of haematite (ore), coke (fuel), and limestone (flux) is 8:4:1.

AI explanation

In the extraction of iron from haematite, the standard charge used in the blast furnace balances the requirements for reduction and slag formation. This requires maintaining a higher proportion of the ore followed by the reducing agent and then the flux. The ratio of the weights of haematite, coke and limestone is 8:4:1.

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