Question

Why is powdered coke sprinkled on top of the electrolyte ? Name the electrode from which aluminium is collected.​

Answer 1

Answer:

Powdered coke is sprinkled on the top of the electrolyte because it prevents the burning of anode.

electrode → Cathode.

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Answer 2

Answer:

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Explanation:

(i) Cryolite acts as a solvent and lower the fusion temperature from 2050°C to 950°C. (ii) A layer of powdered coke is sprinkled over the surface of the electrolyte to reduce the heat loss by radiation and prevent the carbon rod from binning in air