Advertisements
Advertisements
प्रश्न
Write scientific reason.
Magnetic separation method is used to separate the magnetic ingredients in the ores.
उत्तर
- The magnetic separation process is based on the differences in magnetic properties of the ore components.
- When the powdered ore is dropped over the moving belt near nonmagnetic roller, the nonmagnetic particles are carried further along with belt and fall in the collector vessel placed away from 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.
Thus, magnetic separation method is used to separate the magnetic ingredients in the ores.
APPEARS IN
संबंधित प्रश्न
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Identify A and B and give their reactions with dil HCL and dil H2SO4 ?
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Give the effect of heat on their ?
oxides
Explain the following terms:
(a) flux
What do you observe when hydrogen is passed over heated copper oxide?
An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.
With a labelled diagram, explain the electro-refining of a particular metal.
Where are the cathode and anode in the electrolytic cell? Name the material used for these?
State two properties of brass that render it more useful for some purpose than its components.
Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write three balanced equations for the purification of bauxite.
Explain the term of Metallurgy .
Explain with reason:
Why is powdered coke sprinkled on top of the electrolyte?
A compound that is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
What do you observe when hydrogen is passed over heated copper oxide?
Write the molecular formulae of the following compound.
Stannic oxide
Explain concept with example/explain with the help of a balanced equation.
Gangue
Explain concept with example/explain with the help of a balanced equation.
Minerals
The chemical name of rust is ______.
Explain the smelting process.
Zirconium is refined by ____________.
Explain the following term:
Metallurgy
