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प्रश्न
Write the chemical formulae of the main ore of aluminium.
Give the chemical names and formulae of the main ores of aluminium.
Write the chemical formulae of one main ore of aluminium.
उत्तर
| Name | Chemical name | Formula |
| Bauxite | Hydrated aluminium oxide | \[\ce{Al2O3.2H2O}\] |
| Cryolite | Sodium aluminium hexafluoride | \[\ce{Na3AlF6}\] |
संबंधित प्रश्न
Name an ore which is concentrated by:
forth floatation process
Give three ways in which the metal zinc differs from the non-metals carbon. At least one of the differences must be a chemical difference?
Explain
A neutral gas other than oxygen which is formed at the anode during electrolysis of fused alumina
Write the name and formula of two ores of the following: Aluminium
Give the name and formula of an ore of zinc.
Reduction of the zinc compound which is the product of above reaction.
The following question refer to the extraction of aluminium and iron from their ores :
Name the principle ore from which i. iron, and ii. Aluminium is extracted.
Write the equation for the reaction of zinc with following: Sodium hydroxide solution
Find the odd one out of the following and explain your choice : Copper, Lead, Zinc, Mercury
| X | Y | |
| Normal Electronic Configuration | 2, 8, 7 | 2, 8, 2 |
| Nature of Oxide | Dissolves in water and truns blue litmus red. | Very low solubility in water. Dissolves in hydrochloric acid. |
| Tendency for Oxidising and reducing reactions | Tends to oxidise elements and compound. | Tends to act as a reducing agent. |
| Electrical and Thermal Conductivity | Very poor electrical conductor. Poor thermal conductivity. |
Good electrical conductor. Good thermal conductor. |
| Tendency to form Alloys and Amalgams | No tendency to form alloys. | Forms alloys. |
Using the information above, complete the following:
- _________ is the metallic element.
- Metal atoms tend to have a maximum of ________ electrons in the outermost energy level.
- Non-metallic elements tend to form _________ oxides while metals tend to form _______ oxides.
- Non-metallic elements tend to be ______ conductors of heat and electricity.
- Metals tend to _______ electrons and act as ________ agents in their reactions with elements and compounds.
Name : The processes involved in Refining of ores
