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Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?
- a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heat
- b)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agent
- c)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to CO
- d)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by CO
Correct answer is option 'A'. Can you explain this answer?
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Roasted iron ore is mixed with coke and lime stone and smelted in blas...
CaCO3 → CaO + CO2,CaO + SiO2 (slag)
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Roasted iron ore is mixed with coke and lime stone and smelted in blas...
Reactions in the Blast Furnace
The blast furnace is a large furnace used for smelting iron ore. It operates at high temperatures and is divided into different zones, each with its own set of reactions. Let's examine the given statements and determine which one does not represent the correct reaction.
Zone of Fusion Temperature (Lower Part)
In this zone, the temperature is around 1773 K. The main reactions taking place here are:
- Coke burns to CO2: The coke (carbon) present in the furnace reacts with oxygen to produce carbon dioxide gas. This is an exothermic reaction that releases heat (97000 cal). The equation for this reaction is: C + O2 -> CO2
Zone of Heat Absorption (Middle Part)
In this zone, the temperature ranges from 1073 K to 1273 K. The main reactions occurring here are:
- Limestone decomposition: The limestone (calcium carbonate) decomposes to form carbon dioxide gas and lime (calcium oxide). The lime acts as a flux and helps remove impurities from the iron ore. The equation for this reaction is: CaCO3 -> CO2 + CaO
- Reduction of CO2 to CO: Carbon dioxide gas present in the furnace is reduced to carbon monoxide gas by the carbon present in coke. This is an endothermic reaction that absorbs heat. The equation for this reaction is: CO2 + C -> 2CO
Zone of Reduction (Top Part)
In this zone, the temperature ranges from 673 K to 973 K. The main reaction taking place here is:
- Reduction of iron oxide: The iron oxide present in the roasted iron ore is reduced to spongy iron by carbon monoxide gas. This is an exothermic reaction that releases heat. The equation for this reaction is: Fe2O3 + 3CO -> 2Fe + 3CO2
Explanation of the Incorrect Statement (Option A)
The incorrect statement is option A, which states that coke burns to CO2 in the zone of fusion temperature. However, this is not accurate. In the zone of fusion temperature, coke (carbon) reacts with oxygen to produce carbon monoxide gas (CO), not carbon dioxide (CO2). The correct equation for this reaction is: C + O2 -> 2CO. Therefore, option A does not represent the correct reaction taking place in the blast furnace.
Summary
- In the lower part, coke burns to CO2 producing heat.
- In the middle part, limestone decomposes to give CO2 and lime, and CO2 is reduced to CO.
- At the top, iron oxide is reduced to spongy iron by CO.
The blast furnace is a large furnace used for smelting iron ore. It operates at high temperatures and is divided into different zones, each with its own set of reactions. Let's examine the given statements and determine which one does not represent the correct reaction.
Zone of Fusion Temperature (Lower Part)
In this zone, the temperature is around 1773 K. The main reactions taking place here are:
- Coke burns to CO2: The coke (carbon) present in the furnace reacts with oxygen to produce carbon dioxide gas. This is an exothermic reaction that releases heat (97000 cal). The equation for this reaction is: C + O2 -> CO2
Zone of Heat Absorption (Middle Part)
In this zone, the temperature ranges from 1073 K to 1273 K. The main reactions occurring here are:
- Limestone decomposition: The limestone (calcium carbonate) decomposes to form carbon dioxide gas and lime (calcium oxide). The lime acts as a flux and helps remove impurities from the iron ore. The equation for this reaction is: CaCO3 -> CO2 + CaO
- Reduction of CO2 to CO: Carbon dioxide gas present in the furnace is reduced to carbon monoxide gas by the carbon present in coke. This is an endothermic reaction that absorbs heat. The equation for this reaction is: CO2 + C -> 2CO
Zone of Reduction (Top Part)
In this zone, the temperature ranges from 673 K to 973 K. The main reaction taking place here is:
- Reduction of iron oxide: The iron oxide present in the roasted iron ore is reduced to spongy iron by carbon monoxide gas. This is an exothermic reaction that releases heat. The equation for this reaction is: Fe2O3 + 3CO -> 2Fe + 3CO2
Explanation of the Incorrect Statement (Option A)
The incorrect statement is option A, which states that coke burns to CO2 in the zone of fusion temperature. However, this is not accurate. In the zone of fusion temperature, coke (carbon) reacts with oxygen to produce carbon monoxide gas (CO), not carbon dioxide (CO2). The correct equation for this reaction is: C + O2 -> 2CO. Therefore, option A does not represent the correct reaction taking place in the blast furnace.
Summary
- In the lower part, coke burns to CO2 producing heat.
- In the middle part, limestone decomposes to give CO2 and lime, and CO2 is reduced to CO.
- At the top, iron oxide is reduced to spongy iron by CO.
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Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer?
Question Description
Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer?.
Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Roasted iron ore is mixed with coke and lime stone and smelted in blast furnace. Which among the following does not represent the correct answer about the reactions taking place in the blast furnace?a)In the lower part, called zone of fusion temperature (1773 K) coke burns to C02 producing 97000 cal of heatb)In the middle part, lime stone decomposes to give CO2 and lime which acts as a reducing agentc)In the middle part, of the furnace called zone of heat absorption (temperaturel 073-1273 K) CO2 is reduced to COd)At the top is the zone of reduction (temperature 673-973 K). Here iron oxide is reduced to spongy iron by COCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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