During the extraction of zinc metal, the ore is crushed into powder and mixed with water and oil. Air is also blown through the mixture. i) What...

      

During the extraction of zinc metal, the ore is crushed into powder and mixed with water and oil.
Air is also blown through the mixture.
i) What name is given to the process described above?

ii) The hull of a ship is made using Iron and blocks of zinc to prevent rusting. How does zinc
prevent the rusting of iron?

iii) Explain the process named in (i) above occurs.

  

Answers


gideon
(i) Froth flotation.
(ii) Zinc is more reactive than iron.Hence it is oxidized in preference to iron.
(iii) Oil and air cause zinc ore to float and impurities sink.
gideon1 answered the question on September 28, 2017 at 05:37


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