Bauxite has the composition

Options

A. `Al_(2)O_(3)`
B. `Al_(2)O_(3).H_(2)O`
C. `Al_(2)O_(3).2H_(2)O`
D. None of these

Explanation

To determine the composition of Bauxite, we need to analyze the information provided in the question and the video transcript.

### Step-by-Step Solution:

1. **Identify Bauxite**: Bauxite is known to be the primary ore of aluminum. It is important to recall that ores are naturally occurring solid materials from which a metal or valuable mineral can be extracted.

2. **Recall the Chemical Composition**: The chemical composition of Bauxite is primarily aluminum oxide combined with water. The most common form of Bauxite is represented as Al₂O₃·2H₂O.

3. **Analyze the Options**: From the options provided in the video transcript:
- 1st: Al₂O₃
- 2nd: Al₂O₃·2S₂
- 3rd: Al₂O₃·2S₂
- 4th: None of these

4. **Correct Composition**: The correct composition for Bauxite is Al₂O₃·2H₂O, which is not explicitly listed in the options. However, it seems that the closest option mentioned is Al₂O₃·2S₂, which might be a typographical error or misrepresentation of the water component.

5. **Conclusion**: Since the correct composition of Bauxite is not listed among the options, the answer would be "none of these" if we strictly adhere to the given choices.

### Final Answer:
The composition of Bauxite is Al₂O₃·2H₂O, and the correct choice from the options provided is: **4th: none of these**.