मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Write the Reactions Involved in the Zone of Reduction in Blast Furnace During Extraction of Iron.

Advertisements
Advertisements

प्रश्न

Write the reactions involved in the zone of reduction in blast furnace during extraction of iron.

एका वाक्यात उत्तर
Advertisements

उत्तर

Zone of reduction:-
Carbon monoxide reduces ferric oxide to spongy iron (porous solid) at about 900 K.
\[\ce{3Fe^2O^3 + CO -> 2Fe^3O^4 + CO^2}\]
\[\ce{Fe^3O^4 + 4CO -> 3Fe + 4CO^2}\]
\[\ce{Fe^2O^3 + CO -> 2FeO + CO^2}\]

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2014-2015 (March)

APPEARS IN

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Write the names and chemical formulae of any one ore of zinc.


Write the names and chemical formulae of any one ore of iron.


Write chemical formulae of the following ores :

(a) Calamine 

(b) Haematite                     

(c) Magnetite

(d) Corundum


Indicate the principle behind the method used for the refining of zinc.


Which form of the iron is the purest form of commercial iron?


Which among the following minerals does NOT contain aluminium?

(a) Cryolite

(b) Siderite

(c) China clay

(d) Corundum


Explain the following methods to protect metals from corrosion:

Galvanization


Explain the following methods to protect metals from corrosion:

Passivation

 


Draw a neat, well labelled diagram of electrolytic cell for extraction of aluminium


Why does copper obtained in the extraction from copper pyrites have a blistered appearance?


Copper has the face centred cubic structure. The coordination number of each ion is:


What are the differences between minerals and ores?


Metal which is found in free state is:


The main reactions occurring in blast furnace during extraction of iron from haematite are:

(i) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]

(ii) \[\ce{FeO + SiO2 -> FeSiO3}\] 

(iii) \[\ce{Fe2O3 + 3C -> 2Fe + 3CO}\]

(iv) \[\ce{CaO + SiO2 -> CaSiO3}\]


Although carbon and hydrogen are better reducing agents but they are not used to reduce metallic oxides at high temperatures. Why?


Write the chemical reactions involved in the extraction of gold by cyanide process. Also give the role of zinc in the extraction.


Identify a mineral for the major source of boron from the following list?


The important ore of iron is:-


Extraction of zinc from zinc blende is achieved by:-


When compared to ΔG° for the formation of Al2O3 ΔG° for the formation of Cr2O3 is


Native silver metal forms a water solution complex with dilute solution of Na CN in the presence of


Which of the following is not an ore of magnesiuim? 


In the extraction of iron, the slag produce is


Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?


The ore that contains both iron and copper is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×