Question

In the Hoop’s process for refining of aluminum, the fused materials form three different layers and they remain separated during electrolysis also. This is because

• A. There is special arrangement in the cell to keep the layers separate
• B. The three layers have different densities
• C. The three layers are maintained at different temperatures.
• D. The upper layer is kept attracted by the cathode and the lower layer is kept attracted by the anode.

Answer 1

Answer: (B)

In the Hoop’s process for refining of aluminum, the fused materials form three different layers and they remain separated during electrolysis also. This is because the three layers have different densities