English
Karnataka Board PUCPUC Science 2nd PUC Class 12

Below point ‘A’ FeO can ______.

Advertisements
Advertisements

Question

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

Options

  • 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
Fill in the Blanks
Advertisements

Solution

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 \[\ce{FeO}\]. \[\ce{ΔG_{(Fe, FeO)}}\].

shaalaa.com
  Is there an error in this question or solution?
Chapter 6: General Principle and Processes of Isolation of Elements - Multiple Choice Questions (Type - I) [Page 80]

APPEARS IN

NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 6 General Principle and Processes of Isolation of Elements
Multiple Choice Questions (Type - I) | Q 12 | Page 80

RELATED QUESTIONS

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?


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


State the role of silica in the metallurgy of copper.


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


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 ______.


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


Wrought iron is the purest form of iron. Write a reaction used for the preparation of wrought iron from cast iron. How can the impurities of sulphur, silicon and phosphorus be removed from cast iron?


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.


The mixture of compounds A and B is passed through a column of \[\ce{Al2O3}\] by using alcohol as eluant. Compound A is eluted in preference to compound B. Which of the compounds A or B, is more readily adsorbed on the column?


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:

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


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

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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×