Question

Which of the following metals is not obtained by electrolysis?

• A. Na
• B. Mg
• C. Al
• D. Fe

Hint:

Electrolysis is used to extract highly reactive metals like sodium and magnesium, while less reactive metals like iron are extracted using reduction methods.

Answer 1

The Correct Option is D

Step 1: Understand the electrolysis process.
Electrolysis is the process of using electricity to break down compounds into their components. It is commonly used for extracting metals from their ores.
Step 2: Analyze each option.
- Sodium (Na) and Magnesium (Mg) are both extracted using electrolysis. - Aluminum (Al) is also extracted by electrolysis in the Bayer process. - Iron (Fe) is typically extracted by reduction using carbon, not by electrolysis.
Step 3: Apply to the options.
Iron (Fe) is the metal that is not obtained by electrolysis, making option (D) correct.
Final Answer: \[ \boxed{\text{Fe}} \]