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प्रश्न
Write the name.
The molecular formula of main ore of aluminium -
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उत्तर
Al2O3 · nH2O
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संबंधित प्रश्न
In the extraction of aluminium: Name the process of concentration of bauxite.
Name two metals which are found in nature in the free state.
Name the method by which aluminium metal is extracted.
How are the less reactive metals (which are quite low in the reactivity series) extracted? Explain with the help of an example.
Name one ore of sodium. Name the sodium compound present in this ore and write its chemical formula.
The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its ______.
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
Name the following:
The mixture of materials fed into a furnace to extract a metal.
Name the following:
Name two metals always find in combined state.
How are metals refined by the electrolytic methods?
Complete the incomplete statement with missing words:
Metals are ______ while non-metals are ______ conductors of heat.
Usually ______ ores are subjected to ______ which is done in the absence of air.
Carbon cannot reduce the oxides of sodium, magnesium, and aluminum to their respective metals. Why? Where are these metals placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.
Write the name.
Extraction of aluminium from alumina-
Mercury, silver, gold are highly reactive metals.
Right or wrong sentence?
In the electrolytic dissipation method of alumina, the lining of graphite acts as an anode.
Explain the following reaction with the balanced equation.
Ferric oxide is reacted with aluminium.
Complete flow chart given below.
An alloy is
