1. Tardigrade
  2. Question
  3. Chemistry
  4. Assertion: Limestone added in the blast furnace decomposes to give CaO which forms slag in molten state and separates out from iron. Reason: The iron obtained from the blast furnace contains about 4 % carbon and many impurities like S, P, Si, Mn, etc.

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Q. Assertion : Limestone added in the blast furnace decomposes to give $CaO$ which forms slag in molten state and separates out from iron.
Reason : The iron obtained from the blast furnace contains about $4\%$ carbon and many impurities like $S$, $P$, $Si$, $Mn$, etc.

General Principles and Processes of Isolation of Elements

Solution:

Correct answer is (b) If both assertion and reason are true but reason is not the correct explanation of assertion