मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Explain the magnetic separation method with a neat labelled diagram.

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प्रश्न

Observe the figure and name and explain in brief the following method:

थोडक्यात उत्तर
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उत्तर

The method shown in the figure is the magnetic separation method.

  1. The magnetic separation process is based on the differences in magnetic properties of the ore components.
  2. This method requires an electromagnetic machine which consists of a nonmagnetic conveyor belt moving over two rollers, one of which is magnetic in nature while the other is nonmagnetic.
  3. The powdered ore is dropped over the moving belt near the nonmagnetic roller. Two collector vessels are placed below the magnetic roller.
  4. The nonmagnetic particles are carried further along with the belt and fall in the collector's vessel placed away from the magnetic roller. At the same time, the magnetic portion of the ore is attracted by the magnetic roller and falls in the collector vessel near the magnetic roller.
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पाठ 8: Metallugy - Answer the following questions [पृष्ठ ५३]

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संबंधित प्रश्‍न

brown powder deposit on iron?


Name:

(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen


An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.


On which factors does the purification of metals depend?


`HgS + O_2` ..................


How is it removed?


Distinguish between electrolytic methods of reduction and refining.


Which metal is used for:

making pipes, buckets, water tanks,


Explain with reason:

Why is powdered coke sprinkled on top of the electrolyte?


The following is a sketch of an electrolytic cell used in the extraction of aluminium :

(a) What is the substance of which the electrode A and B are made?
(b) At which electrode (A or B) is aluminium formed?
(c) What are the two aluminium compounds in the electrolyte C?
(d) Why is it necessary for electrode B to be continuously replaced?


Why does iron or zinc not occur free in nature?


What do you observe when hydrogen is passed over heated copper oxide?


In Wilfley table method to separate particles of gangue _______ method is used.


Write scientific reason.

Magnetic separation method is used to separate the magnetic ingredients in the ores.


Write the molecular formulae of the following compound.

Copper pyrite


Distinguish between:

Froth floatation - Leaching


Explain concept with example/explain with the help of a balanced equation.

Minerals


Explain the smelting process.


Limestone is used as a flux in the extraction of ______.


Which of following metals occurs in native state?


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