Though tin stone is oxide of tin, yet roasting is carried out for this ore. Why ?

Explanation

To answer the question of why roasting is carried out for tin stone (SnO2), despite it being an oxide of tin, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Identify the Ore**:
- Tin stone is known as cassiterite, which is the oxide of tin (SnO2).

2. **Understand the Composition**:
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