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प्रश्न
Complete the following flowchart.
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उत्तर
| Separation method of metals | |||
| Wilfley table method | Hydraulic separation method | Magnetic separation method | Froth floatation method |
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संबंधित प्रश्न
Give the importance of the following for living beings:
Nitrogen
Give the importance of the following for living beings:
Hydrogen
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is a more reactive metal.
Give the effect of heat on their: nitrates
Explain the following terms:
smelting
Name the methods used for purification?
`Cu (OH)2`
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Give the ionization reactions of electrolyte used in Hall’s process. write the reaction at the cathode and the anode. Why the anode has to be replaced in this process?
what does it form with silica present in the ore?
Name a metal which forms a liquid alloy at ordinary temperature.
What is magnalium? Name the main elements present in it? Write its one use ?
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.
What do you observe when hydrogen is passed over heated copper oxide?
Write the molecular formulae of the following compound.
Stannic oxide
Distinguish between:
Froth floatation - Leaching
Observe the figure and name and explain in brief the following method:
Explain the smelting process.
Calculate the difference between heat of combustion of carbon monoxide gas at constant pressure and at constant volume at 27°C? (R = 2 cal K-1 mol-1).
Bassemerisation is used in the extraction of ______.
A process of extracting metals from aqueous solutions of their salts using suitable reducing agents is called ______
