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प्रश्न
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.
उत्तर
Reaction at cathode :
Al3+ + 3e- → Al
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संबंधित प्रश्न
Name two metals which are highly resistant to corrosion.
Fill in the following blank with suitable word:
Bronze is an alloy of copper and .........
A sulphide ore is converted into metal oxide by the process of:
(a) carbonation
(b) roasting
(c) calcination
(d) anodising
Give the principles of the froth floatation process.
Name the following:
Two metals which are found in the free or native state.
Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.
Observe the given figure of reactivity series of metals and answer the following questions:
Reactivity series of metals
- Name two metals which react with water.
- Name two moderately reactive metals.
- Name the most highly reactive metal and the most less reactive metal.
Gold and silver are active metals.
Identify who I am!
Ore of Aluminum- ______
Assertion (A): The extraction of metals from their sulphide ores cannot take place without roasting the ore.
Reason (R): Roasting converts sulphide ores directly into metals.
