Naphthalene and iron filings can be separated by

Options

A. solvent extraction
B. sublimation
C. magnetic separation
D. both (b) and (c).

Explanation

To separate naphthalene and iron filings, you can follow these steps:

### Step-by-Step Solution:

1. **Understand the Properties**:
- Recognize that naphthalene is a volatile compound, meaning it can easily change from solid to gas at room temperature. Iron filings, on the other hand, are magnetic.

2. **Choose a Separation Method**:
- You can use two methods to separate naphthalene and iron filings: magnetic separation and sublimation.

3. **Magnetic Separation**:
- **Gather Materials**: Get a magnet and a container (like a beaker) where the mixture of naphthalene and iron filings is placed.
- **Apply the Magnet**: Bring the magnet close to the mixture. The iron filings will be attracted to the magnet due to their magnetic properties.
- **Separate the Components**: As the iron filings stick to the magnet, you can remove them from the mixture, leaving naphthalene behind in the container.

4. **Sublimation (Alternative Method)**:
- **Heat the Mixture**: If you choose to use sublimation, gently heat the mixture. Naphthalene will vaporize due to its volatile nature.
- **Collect the Vapors**: As naphthalene vaporizes, you can capture the vapors in a cooled container, where they will condense back into solid naphthalene.
- **Leave Iron Filings Behind**: The iron filings will remain in the original container as they do not vaporize.

5. **Final Separation**:
- After using either method, you will have successfully separated naphthalene from iron filings.