Which of the following are true for electrolytic extraction of aluminium? — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Step 1: The froth floatation process is based on differential wetting characteristics. Step 2: Sulfide ore particles are hydrophobic and are preferentially wetted by oils (such as pine oil), while gangue particles are hydrophilic and are wetted by water. Step 3: Hence, the ore concentrated by wetting with oil is a sulphide ore, matching option (d).