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प्रश्न
In the extraction of aluminium: Why is it necessary to replace anodes time to time?
उत्तर
The anode is replaced from time to time because it gets oxidised by oxygen which evolves at it.
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संबंधित प्रश्न
The process by which sulphide ore is concentrated.
Name the gas in air which tarnishes silver articles slowly.
Name two metals which are highly resistant to corrosion.
Name the electrode at which aluminium metal is produced.
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
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(a) Ag and Hg
(b) Ag and Zn
(c) Au and Hg
(d) Au and Ag
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bauxite
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wrapping chocolates
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The process of heating a substance very strongly in such a way that it does not combine with oxygen.
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Name the following :
The Process of heating an ore to a high temperature in the presence of air.
Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.
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In the electrolytic reduction of alumina, the lining of graphite acts as an anode.
Write the molecular formulae of the following compound.
Fluorspar
Explain concept with example/explain with the help of a balanced equation.
Calcination
The poorest conductor of heat among metals is ____________.
