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NEET levelSingle correct optionDifficulty 1 of 3mt059

In the blast furnace, which substance is added to combine with silica gangue and form a fusible slag?

  1. A
  2. B (from limestone)
  3. C
  4. D (coke)

Answer: B

Silica is an acidic gangue, so a basic flux is needed. Limestone gives which reacts as , a molten slag that separates from the iron.
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