Advertisements
Advertisements
प्रश्न
Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.
उत्तर
Cryolite
APPEARS IN
संबंधित प्रश्न
Answer the following questions with respect to the electrolytic process in the extraction of aluminum:
Explain why powdered coke is sprinkled over the electrolytic mixture.
For the substance given below, describe the role played in the extraction of aluminium.
Graphite
Give reason for the following:
Extraction of aluminium was very difficult in the beginning.
What is the role of cryolite (NaAlF6) in the electrolytic reduction of alumina in the Hall's process?
Why is food containing iron salts should not be cooked in aluminium utensils?
An aqueous solution of sodium chloride is not used for electrolytic reduction of sodium metal. Why?
Write the equation for the reaction that occurs at the cathode during the extraction by aluminium by electrolysis.
Explain why it is preferably to use a number of graphite electrodes as anode instead of a single electrode, during the above electrolysis.
State the relevant reason for the following:
Graphite anodes are continuously replaced during the electrolysis of alumina.
What impurities are present in aluminium ore?
