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

Below point ‘A’ FeO can ______. - Chemistry

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प्रश्न

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

पर्याय

  • 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
रिकाम्या जागा भरा
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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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पाठ 6: General Principle and Processes of Isolation of Elements - Multiple Choice Questions (Type - I) [पृष्ठ ८०]

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

संबंधित प्रश्‍न

How is ‘cast iron’ different from ‘pig iron’?


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 chemical reactions taking place in the extraction of zinc from zinc blende.


The choice of a reducing agent in a particular case depends on thermodynamic factor. How far do you agree with this statement? Support your opinion with two examples.


Write chemical reactions taking place in the extraction of copper from Cu2 S. 


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 ______.


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


How is copper extracted from low grade copper ores?


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


Explain the following:

\[\ce{CO2}\] is a better reducing agent below 710 K whereas \[\ce{CO}\] is a better reducing agent above 710 K.


Explain the following:

Generally sulphide ores are converted into oxides before reduction.


Explain the following:

Carbon and hydrogen are not used as reducing agents at high temperatures.


A cuprous ore among the following is:-


Heating of MgCl2 6H2O in absence of HCl gives ______.


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

Reason: Haematite is a carbonate ore of iron.


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