__________is used to exract many metals from their ores, such as potassium, sodium and aluminum.

Options

A. Electrolytic cell
B. Electrolysis
C. Cathode
D. Electro-plating

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a process used to extract metals such as potassium, sodium, and aluminum from their ores.

2. **Identifying the Metals**: Potassium, sodium, and aluminum are all reactive metals. They belong to the S-block and P-block of the periodic table, indicating that they have low electrochemical potentials.

3. **Recognizing the Extraction Method**: To extract these highly reactive metals from their ores, we need a method that can break down ionic compounds. The most suitable method for this purpose is electrolysis.

4. **Defining Electrolysis**: Electrolysis is a process where an ionic compound is decomposed into its elements by passing an electric current through it. This process requires an electrolytic cell, which consists of electrodes and an electrolyte.

5. **Describing the Electrolytic Cell**: In an electrolytic cell, the anode is where oxidation occurs (loss of electrons), and the cathode is where reduction occurs (gain of electrons). The electrolyte is a solution that conducts electricity and allows ions to move.

6. **Conclusion**: Therefore, the process used to extract metals like potassium, sodium, and aluminum from their ores is called **electrolysis**.

**Final Answer**: Electrolysis is used to extract many metals from their ores, such as potassium, sodium, and aluminum.

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