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प्रश्न
Answer the following question:
Write the chemical formula of one main ore of iron and aluminium.
उत्तर
Ores of iron
|
Name |
Chemical name |
Formula |
|
Red Haematite |
Anhydrous ferric oxide |
Fe2O3 |
|
Brown Haematite |
Hydrated ferric oxide |
2Fe2O3.3H2O |
Ores of aluminum
|
Name |
Chemical name |
Formula |
|
Bauxite |
Hydrated aluminium oxide |
Al3O32H2O |
|
Cryolite |
Sodium aluminium oxide |
Na3AlF6 |
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संबंधित प्रश्न
Aluminium is said to be more reactive than iron, towards oxygen (or air) yet iron undergoes corrosion to a greater extent than aluminum. Explain.
Name the process by which the refining of aluminium is done ?
Name the constituents of Brass.
Name the following:
The chief ore of aluminium.
In the Hall's process for extraction of aluminium, Sate the location of cathode and anode and explain what occurs at each electrode.
For the substance listed below, explain its role in the extraction of aluminium: Graphite
Correct the following statement :
Haematite is the chief ore of aluminium.
Explain why it is preferably to use a number of graphite electrodes as anode instead of a single electrode, during the above electrolysis.
In Hoope's process, pure aluminium is collected at the ______ of the electrolytic cell.
State the relevant reason for the following:
Graphite anodes are continuously replaced during the electrolysis of alumina.
