Why is powdered coke sprinkled over the electrolytic mixture ?

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.

Give reasons for the following - pertaining to Hall Herault's process. A layer of powdered coke sprinkled over the lectrolytic mixture, protects the carbon electrodes.

Answer the following questions based on the ectraction of aluminium from alumina by Hall - Heroult's Process. Why is powdered coke sprinked on top of the electrolyte.

Explain why : A layer of powdered coke is sprinkled on the surface of the electrolyte during the electrolysis of molten aluminium

Extraction of aluminum can be understood by Coke powder is spreaded over the molten electrolyte due to :

A metal object is to be electroplated with silver .The electroplated with silver . The electrolyte selected is sodium argentocyanide . Why is it preferred to use silver nitrate as an electrolyte ?

Answer the question based on the extraction of aluminium from alumina by Hall Heroult's Process : What is sprinkled on top of the electrolyte ?

Why is pure water regarded as a weak electrolyte ?

A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide. Why is it preferred to silver nitrate as an electrolyte?

Why is hydrogen chloride not collected over water ?