Which of the following compound form non conducting solution in water. :-

Options

A. Blue vitriol
B. Toulene
C. Chile salt petre
D. Indian salt petre

Explanation

To determine which of the given compounds forms a non-conducting solution in water, we need to analyze each compound's behavior when dissolved in water. A non-conducting solution does not contain ions, as ions are responsible for conducting electricity.

### Step-by-Step Solution:

1. **Understand the Concept of Conductivity**:
- Solutions that conduct electricity contain ions. When ionic compounds dissolve in water, they dissociate into their respective ions, allowing the solution to conduct electricity.
- Non-conducting solutions do not dissociate into ions, meaning they do not conduct electricity.

2. **Analyze Each Compound**:
- **Blue Vitriol (Copper Sulfate, CuSO4)**:
- When dissolved in water, it dissociates into Cu²⁺ and SO₄²⁻ ions.
- Since it produces ions, it is a conducting solution.

- **Toline**:
- Toline is a methyl group attached to a benzene ring (C₇H₈). It is a non-polar organic compound.
- Toline does not dissolve in water, which means it does not dissociate into ions.
- Therefore, it forms a non-conducting solution.

- **Chili Salt Petri (Sodium Nitrate, NaNO3)**:
- When dissolved in water, it dissociates into Na⁺ and NO₃⁻ ions.
- This means it is a conducting solution due to the presence of ions.

- **Indian Salt Petri (Potassium Nitrate, KNO3)**:
- When dissolved in water, it dissociates into K⁺ and NO₃⁻ ions.
- Similar to sodium nitrate, it is a conducting solution because it produces ions.

3. **Conclusion**:
- Among the given options, only toline does not produce ions when dissolved in water, making it the only non-conducting solution.

### Final Answer:
The compound that forms a non-conducting solution in water is **Toline**.