Bone charcoal contains maximum percentage of ________.

Explanation

**Step-by-Step Solution:**

1. **Understanding Bone Charcoal**: Bone charcoal, also known as bone black, is a form of carbon that is produced by charring animal bones. It is primarily used for its adsorptive properties.

2. **Composition of Bone Charcoal**: The main components of bone charcoal include carbon and various inorganic compounds. The most significant inorganic compound present in bone charcoal is calcium phosphate.

3. **Identifying the Maximum Percentage**: Among the components of bone charcoal, calcium phosphate is present in the highest percentage. This makes it a key constituent of bone charcoal.

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