Advertisements
Advertisements
प्रश्न
Write the reactions involved in the zone of reduction in blast furnace during extraction of iron.
उत्तर
Zone of reduction:-
Carbon monoxide reduces ferric oxide to spongy iron (porous solid) at about 900 K.
\[\ce{3Fe^2O^3 + CO -> 2Fe^3O^4 + CO^2}\]
\[\ce{Fe^3O^4 + 4CO -> 3Fe + 4CO^2}\]
\[\ce{Fe^2O^3 + CO -> 2FeO + CO^2}\]
APPEARS IN
संबंधित प्रश्न
Purification of aluminium by electrolytic refining is carried out by
(a)Hoope process
(b)Hall process
(c)Baeyer process
(d)Serperck process
What is the role of cryolite in the extraction of aluminium?
What is the role of limestone in the extraction of iron from its oxides?
Name the method used for refining of copper metal.
Which of the ores mentioned can be concentrated by magnetic separation method?
Which among the following minerals does NOT contain aluminium?
(a) Cryolite
(b) Siderite
(c) China clay
(d) Corundum
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 happens when a nickel rod is dipped into a copper sulphate solution? Justify your answer.
`[E_((Ni^(+2))/(Ni))^0 = -0.25"v" and E _(("Cu"^(+2))/("Cu"))^0 = +0.34"v"]`
Describe the role of the Cryolite in the extraction of aluminium from pure alumina.
Bauxite has the composition
What are the differences between minerals and ores?
Give the uses of zinc.
Metals which occur in their native state in nature:
Metal which is found in free state is:
Which among the following statement is correct?
The most abundant metal on earth is:
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.
Although carbon and hydrogen are better reducing agents but they are not used to reduce metallic oxides at high temperatures. Why?
When a strip of metallic zinc is placed in an aqueous solution of copper nitrate the blue colour of the solution disappear due to formation of
In the electrolytic process for the extraction of aluminium the electrolyte is:-
Which of the following is not ore of aluminium?
When compared to ΔG° for the formation of Al2O3 ΔG° for the formation of Cr2O3 is
Which of the following is not an ore of magnesiuim?
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.