The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is?

Question

A block of mass 1 kg is pushed up a surface inclined to horizontal at an angle of \( 60^\circ \) by a force of 10 N parallel to the inclined surface. When the block is pushed up by 10 m along the inclined surface, the work done against frictional force is:

[Given: \( g = 10 \) m/s\( ^2 \), \( \mu_s = 0.1 \)]

Answer 1

In the context of a blast furnace used for the extraction of iron, various reactions take place at different temperature zones to facilitate the reduction of iron oxides. Let's analyze the given options to identify the reaction that does NOT occur in the specified temperature range (900 K to 1500 K).

Consider the reaction: FeO + CO → Fe + CO₂.
This reaction represents the reduction of iron(II) oxide by carbon monoxide, producing metallic iron and carbon dioxide. This is a crucial step in the reduction of iron oxides in the blast furnace, typically occurring between 900 K to 1500 K. Therefore, this reaction does take place in the specified range.
Consider the reaction: C + CO₂ → 2CO.
This is the Boudouard reaction, which involves the formation of carbon monoxide from carbon and carbon dioxide. This reaction is endothermic and proceeds significantly at high temperatures found within the blast furnace. Thus, it is likely to occur within the specified temperature range.
Consider the reaction: CaO + SiO₂ → CaSiO₃.
This reaction forms slag by the combination of calcium oxide with silicon dioxide. While essential for the removal of impurities, this reaction is more associated with the formation of the slag phase and does not depend directly on the temperature range of 900 K to 1500 K for its occurrence but is not absent within it.
Consider the reaction: Fe₂O₃ + CO → 2FeO + CO₂.
This reaction describes the reduction of iron(III) oxide to iron(II) oxide. However, this reaction typically occurs at a lower temperature range in a blast furnace. The main reduction reactions above 900 K primarily involve FeO as the starting oxide, and thus this particular reaction does not typically occur between 900 K to 1500 K.

Therefore, the reaction that does NOT take place in a blast furnace within the 900 K to 1500 K range is: Fe₂O₃ + CO → 2FeO + CO₂.

Answer 2

In the context of a blast furnace used for the extraction of iron, various reactions take place at different temperature zones to facilitate the reduction of iron oxides. Let's analyze the given options to identify the reaction that does NOT occur in the specified temperature range (900 K to 1500 K).

Consider the reaction: FeO + CO → Fe + CO₂.
This reaction represents the reduction of iron(II) oxide by carbon monoxide, producing metallic iron and carbon dioxide. This is a crucial step in the reduction of iron oxides in the blast furnace, typically occurring between 900 K to 1500 K. Therefore, this reaction does take place in the specified range.
Consider the reaction: C + CO₂ → 2CO.
This is the Boudouard reaction, which involves the formation of carbon monoxide from carbon and carbon dioxide. This reaction is endothermic and proceeds significantly at high temperatures found within the blast furnace. Thus, it is likely to occur within the specified temperature range.
Consider the reaction: CaO + SiO₂ → CaSiO₃.
This reaction forms slag by the combination of calcium oxide with silicon dioxide. While essential for the removal of impurities, this reaction is more associated with the formation of the slag phase and does not depend directly on the temperature range of 900 K to 1500 K for its occurrence but is not absent within it.
Consider the reaction: Fe₂O₃ + CO → 2FeO + CO₂.
This reaction describes the reduction of iron(III) oxide to iron(II) oxide. However, this reaction typically occurs at a lower temperature range in a blast furnace. The main reduction reactions above 900 K primarily involve FeO as the starting oxide, and thus this particular reaction does not typically occur between 900 K to 1500 K.

Therefore, the reaction that does NOT take place in a blast furnace within the 900 K to 1500 K range is: Fe₂O₃ + CO → 2FeO + CO₂.

The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is?

The Correct Option is D

Solution and Explanation

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