6.7 Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.
At 500-800K
limestone also decomposes to calcium oxide which reverses silicate impurity of the ore as slag
At 900-1500K
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
CBSE Class 12 accountancy board exam analysis 2024 out; paper rated easy, balanced
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