Advertisements
Advertisements
Question
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) \[\ce{CaO + SiO2 -> CaSiO3}\]
Advertisements
Solution
(i) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
(iv) \[\ce{CaO + SiO2 -> CaSiO3}\]
Explanation:
In blast furnace during extraction of iron, the following two are main reactions.
(i) Reduction of \[\ce{Fe2O3}\] with \[\ce{CO}\]
\[\ce{Fe2O3 + CO -> 2FeO + CO2}\]
\[\ce{2FeO + 2CO -> Fe + 2CO2}\]
\[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
(ii) Slag formation, \[\ce{CaO + SiO2 -> \underset{Fusible slag}{CaSiO3}}\]
APPEARS IN
RELATED QUESTIONS
The process of leaching alumina, using sodium carbonate is called
- Bayer's process
- Decomposition
- Cyanide process
- Hall's process
Silica is added to roasted copper ore during smelting process to remove _______.
(A) ferrous sulphide
(B) ferrous oxide
(C) cuprous sulphide
(D) cuprous oxide
Mention names and formulae of two ores of alumunium.
Which of the ores mentioned can be concentrated by magnetic separation method?
Differentiate between “minerals” and “ores”.
Write the names and chemical formulae of any ‘two’ minerals of aluminium.
Why does copper obtained in the extraction from copper pyrites have a blistered appearance?
What happens when a nickel rod is dipped into a copper sulphate solution? Justify your answer.
[\[\ce{E{^{\circ}_{Ni^{+2}/Ni}}}\] = − 0.25 V and \[\ce{E{^{\circ}_{Cu^{+2}/Cu}}}\] = +0.34 V]
Bauxite has the composition
Give the uses of zinc.
Metal which is found in free state is:
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.
Identify a mineral for the major source of boron from the following list?
In the electrolytic process for the extraction of aluminium the electrolyte is:-
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
Match List I with List II.
| List - I | List - II | ||
| a. | Siderite | I. | FeCO3 |
| b. | Malachite | II. | CuCO3 · Cu(OH)2 |
| c. | Sphalerite | III. | ZnS |
| d. | Calamine | IV. | ZnCO3 |
Choose the correct answer from the option given below.
Match List - I with List - II.
| List - I | List - II | ||
| (One) | (Composition) | ||
| (A) | Siderite | (I) | FeCO3 |
| (B) | Malachite | (II) | CuCO3 · Cu(OH)2 |
| (C) | Sphalerite | (III) | ZnS |
| (D) | Calamine | (IV) | ZnCO3 |
Choose the correct answer from the options given below:
The ore that contains both iron and copper is ______.
