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Names of some minerals are given below. ...

Names of some minerals are given below.
.i) Haematite
ii) bauxite
iii) Dolomite
a. Identify the mineral of Iron (Fe)
b. Name the reducing agent mainly used in the extraction of iron from its ore.
c. What is the role of powdered lime stone in the extraction process of iron?

Text Solution

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a) Aluminium has a greater affinity for oxygen. So it reduces oxides of metals easily.
b) The density of aluminium is lower than that of copper. More over aluminium is cheaper than copper. o) The melting point of alumina is very high. But cryolite melts at a lower temperature. Alumina exists in the form of `Al^3+` and `O^2+` when dissolved in cryolite.
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V PUBLICATION-PRODUCTION OF METALS-QUESTION BANK
  1. Match the following. '(##VPUTTTCHEXP01C04E05006Q05##)'

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  2. Write the reasons of followings: a) Aluminium is a very good reducing...

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  3. Names of some minerals are given below. .i) Haematite ii) bauxite ...

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  4. a) Write down the nature of gangue in iron ore. b) Reducing agent in ...

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  5. a) Which ores are for calcination and roasting? b) Give examples for...

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  6. Given below the equation for the reactions taking place inside the bla...

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  7. Alloys containing iron a given. Find out a, b, c and d. '(##VPUTTTCH...

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  8. Reactions of blast furnace are given below: 3Fe2 O3 + CO rarr 2Fe3 O...

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  9. Nature of some ores are given. Pick out the method of concentration fr...

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  10. Aluminium is prepared industrially by Hall- Heroult process. Various s...

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  11. The order of reactivity of some metais are given. Answer the following...

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  12. Complete the table. '(##VPUTTTCHEXP01C04E06007Q07##)'

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  13. Fill up the columns by choosing the appropriate one from those given b...

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  14. a) Complete the given below chart related with the concentration of al...

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  15. Complete the table given below. '(##VPUTTTCHEXP01C04E06010Q10##)'

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  16. The impurities present in the ore have high density and the ore has lo...

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  17. An aluminium alloy which is used for making magnets is.............

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  18. Low denser ore: Froth floatation. Magnetic ore: .............

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  19. Write two advantage of steel compared to iron?

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  20. Solvent is used in the concentration of bauxite.

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