Which of the following ores is / are oxide ore (s) ?

Options

A. Tinstone
B. Bauxite
C. Cryolite
D. Carnallite

Answer

To determine which of the given ores are oxide ores, we need to analyze the chemical formulas of each ore provided in the question. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the ores and their chemical formulas
The ores listed in the question are:
1. Tin Stone
2. Bauxite
3. Cryolite
4. Carnelite

### Step 2: Write the chemical formulas of the ores
- **Tin Stone**: The chemical formula is SnO₂.
- **Bauxite**: The chemical formula is Al₂O₃·2H₂O (which is aluminum oxide).
- **Cryolite**: The chemical formula is Na₃AlF₆.
- **Carnelite**: The chemical formula is KCl·MgCl₂·6H₂O.

### Step 3: Determine if each ore is an oxide ore
- **Tin Stone (SnO₂)**: This contains oxygen and is therefore an oxide ore.
- **Bauxite (Al₂O₃·2H₂O)**: This also contains oxygen and is classified as an oxide ore.
- **Cryolite (Na₃AlF₆)**: This does not contain oxygen in the form of an oxide and is not an oxide ore.
- **Carnelite (KCl·MgCl₂·6H₂O)**: This does not contain oxygen in the form of an oxide and is also not an oxide ore.

### Step 4: Conclusion
From the analysis, the ores that are classified as oxide ores are:
- Tin Stone (SnO₂)
- Bauxite (Al₂O₃·2H₂O)

### Final Answer
The oxide ores among the given options are **Tin Stone and Bauxite**.

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