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Question

Iron is extracted from hematite in the blast furnace.
The hematite contains silicon (IV) oxide (sand) as an impurity
What reacts with this impurity to remove it?


A
calcium oxide
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B
carbon
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C
carbon dioxide
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D
slag
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Solution

The correct option is B calcium oxide
$$\text{Calcium oxide is used to remove silicon impurity in iron extraction. It forms slag.}$$

Chemistry

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