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.

Question

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. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

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

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.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

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

Q. Assertion : Limestone added in the blast furnace decomposes to give $C a O$ 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 $S$ , $P$ , $S i$ , $M n$ , etc.