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Question
Chemistry
What is the slag formed in the extraction of iron?
Q. What is the slag formed in the extraction of iron?
2102
197
AP EAMCET
AP EAMCET 2018
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A
C
a
O
B
C
a
S
i
O
3
C
M
g
S
i
O
3
D
S
i
O
2
Solution:
Iron ores contain acidic impurities like silica (
S
i
O
2
, silicon dioxide
)
. These impurities react with calcium carbonate to form molten slag
Calcium carbonate
C
a
C
O
3
+
Silicon dioxide (Silica)
S
i
O
2
⟶
(Slag)Calcium silicate
C
a
S
i
O
3
+
C
O
2
↑