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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Below point ‘A’ FeO can ______.

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प्रश्न

Below point ‘A’ \[\ce{FeO}\] can ______.

विकल्प

  • be reduced by carbon monoxide only.

  • be reduced by both carbon monoxide and carbon.

  • be reduced by carbon only.

  • not be reduced by both carbon and carbon monoxide.

MCQ
रिक्त स्थान भरें
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उत्तर

Below point ‘A’ \[\ce{FeO}\] can be reduced by carbon monoxide only.

Explanation:

Below the point A, Gibbs free energy change for the formation of \[\ce{CO2}\] from \[\ce{CO}\] has lower value than Gibb's free energy change for the formation of \[\ce{FeO}\]. \[\ce{ΔG_{(Fe, FeO)}}\].

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अध्याय 6: General Principle and Processes of Isolation of Elements - Multiple Choice Questions (Type - I) [पृष्ठ ८०]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 6 General Principle and Processes of Isolation of Elements
Multiple Choice Questions (Type - I) | Q 12 | पृष्ठ ८०

संबंधित प्रश्न

Is it true that under certain conditions, Mg can reduce SiO2 and Si can reduce MgO? What are those conditions?


Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?


Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.


State the role of silica in the metallurgy of copper.


How will you convert the following:
Zinc blende to Zinc metal


In the extraction of copper from its sulphide ore, the metal is formed by the reduction of \[\ce{Cu2O}\] with ______.


In the metallurgy of aluminium ______.


Choose the correct option of temperature at which carbon reduces \[\ce{FeO}\] to iron and produces \[\ce{CO}\].


For the reduction of \[\ce{FeO}\] at the temperature corresponding to point D, which of the following statements is correct?


For the metallurgical process of which of the ores calcined ore can be reduced by carbon?

(i) Haematite

(ii) Calamine

(iii) Iron pyrites

(iv) Sphalerite


The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace? Explain by giving reaction.


Why is sulphide ore of copper heated in a furnace after mixing with silica?


Explain the following:

Silica is added to the sulphide ore of copper in the reverberatory furnace.


A cuprous ore among the following is:-


Assertion: For the extraction of iron, haematite ore is used.

Reason: Haematite is a carbonate ore of iron.


\[\ce{Au + CN^- + H2O + O2 -> [Au(CN)2]^- + OH^-}\]

The number of CN− ions involved in the balanced equation is ______.


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