Camphor, naphthalene, etc., are purified by ........ method.

Explanation

To purify camphor and naphthalene, we can use the method of sublimation. Here’s a step-by-step explanation of the process:

### Step-by-Step Solution:

1. **Understanding Volatile Solids**:
- Camphor and naphthalene are classified as volatile solids, meaning they can easily transition from a solid to a gas without passing through a liquid phase. This property is essential for the sublimation process.

2. **Preparation of the Mixture**:
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