We all know from our observation that water can exist in three states of matter.
Statements:
A. Solid, as ice
B. Liquid, as petrol and
C. Gas as `O_(2)`
Which of the following statements is/are true

Options

A. Only A is true B and C are false
B. A and B are true C is false
C. All are false
D. All are true

Answer

To solve the question, we need to analyze the statements provided regarding the states of matter of water.

### Step-by-step Solution:

1. **Identify the states of water**: Water (H₂O) can exist in three states:
- Solid (Ice)
- Liquid (Water)
- Gas (Steam)

2. **Evaluate Statement A**:
- Statement A states "Solid, as ice".
- This is true because ice is indeed the solid state of water.

3. **Evaluate Statement B**:
- Statement B states "Liquid, as petrol".
- This is false because petrol is not water; it is a different liquid altogether. The liquid state of water is simply referred to as water.

4. **Evaluate Statement C**:
- Statement C states "Gas as O₂".
- This is also false because O₂ (oxygen) is not the gaseous state of water. The gaseous state of water is steam (water vapor).

5. **Conclusion**:
- From the evaluations:
- Statement A is true.
- Statements B and C are false.
- Therefore, the correct option is that only Statement A is true, while B and C are false.

### Final Answer:
The correct option is **Option 1: Only A is true; B and C are false.**

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