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Question

Which of the following statements are correct regarding metallurgy of iron?


A
Coke reduces FeO to Fe above 710C
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B
CO reduces Fe2O3 to Fe below 710C
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C
Coke reduces Fe2O3 to FeO below 710C
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D
CO reduces Fe2O3 to FeO above 710C
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Solution

The correct options are
B Coke reduces $$FeO$$ to $$Fe$$ above 710$$^{\circ}$$C
C CO reduces $$Fe_2O_3$$ to $$Fe$$ below 710$$^{\circ}$$C
Coke reduces $$FeO$$ to $$Fe$$ above 710$$^{\circ}\ C$$.
$$FeO+C \rightarrow Fe+ CO$$

In the blast furnace, it is so hot that carbon monoxide can be used to reduce the iron oxide in place of carbon at below 710$$^{\circ}\ C$$.

$$Fe_2O_3 + 3CO  \rightarrow 2Fe + 3CO_2$$

Hence options A &  B are correct.

Chemistry

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