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प्रश्न
Which metal is extracted from bauxite ore?
उत्तर
Aluminium metal is extracted from bauxite ore. The aluminium compound present in this ore is aluminium oxide. The chemical formula of the ore is Al2O3. 2H2 O.
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संबंधित प्रश्न
Name one metal which is extracted by reduction with heat alone.
Define the following term.
Gangue
Answer the following questions based on the extraction of aluminium from alumina by Hall - Heroult’s Process :
Name the electrode, from which aluminium collected.
Complete the incomplete statement with missing word:
Non-metals form acidic oxides while metals form ______.
State the property of the metal being utilized in the following :
| Use of metal | Property |
| Zinc in Galvanization | |
| Aluminium in Thermite welding |
Usually ______ ores are subjected to ______ which is done in the absence of air.
Write the name.
The process of extraction of aluminium from alumina-
The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called ____________.
During extraction of metals, electolytic refining is used to obtain pure metals.
(a) Which material will be used as anode and cathode for refining of silver metal by this process?
(b) Suggest a suitable electrolyte also.
(c) In this electrolytic cell, where do we get pure silver after passing electric current?
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Give the reason why the above reaction is known as a thermite reaction.
