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प्रश्न
Write the equation for the formation of aluminium at the cathode during the electrolysis of alumina.
उत्तर
`Al_2O_3 -> 2Al^(+3) + 3O^(2-)`
Reaction of cathode : `2Al^(+3) + 6e -> 2Al`
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संबंधित प्रश्न
Choose the correct answer from the options given below:
Aluminum powder is used in thermite welding because
A. It is a strong reducing agent
B. It is a strong oxidizing agent
C. It is corrosion resistant
D. It is a good conductor of heat
Which impurities are present in bauxite?
State on what special properties the use of each of these metals depends:
aluminium
Explain
A neutral gas other than oxygen which is formed at the anode during electrolysis of fused alumina
State the use of:
cast iron
State the use of:
Mild steel,
Name the following:
Two metals which occur in nature in free state as well as in combined state.
Define the term : Ore
Arrange the metals:
calcium, iron, magnesium and sodium in order of their reactivity with water placing the most reactive first.
The following question refer to the extraction of aluminium and iron from their ores:
What is the most important chemical process in the extraction of any metal? State how this essential step is carried out in the extraction of: i. iron, and ii. Aluminium.
