_______ is an example of trihydric alcohol and _______ is an example of dihydric alcohol.

Explanation

To answer the question, we need to identify examples of trihydric and dihydric alcohols.

### Step-by-Step Solution:

1. **Understanding Alcohols**:
- Alcohols are organic compounds that contain one or more hydroxyl (-OH) groups. The classification of alcohols is based on the number of hydroxyl groups present.

2. **Trihydric Alcohol**:
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