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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
Why are alkali metals kept in kerosene oil?
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: carbonates
Name:
(a) the processes involved in
concentration :-
Name:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
Explain the following terms:
(c) slag
On which factors does the purification of metals depend?
Name the methods used for purification?
With a labelled diagram, explain the electro-refining of a particular metal.
`Ag2O`
................................
`2NaNO_3`
......................
state the reactions at the two electrodes ?
Why is flux used in the blast furnace?
How is it removed?
Which metal is used for:
making face creams
Arrange the metals in (2) in the decreasing order of reactivity.
Complete the following flow chart and answer the questions below:
i) In which method pine oil is used?
ii) Explain what method of concentration in brief.
Identify the following method of concentration of ores and explain briefly.
State the reason for the addition of caustic alkali to bauxite ore during the purification of bauxite.
Limestone is used as a flux in the extraction of ______.
Calcination is used in metallurgy for the removal of?
