Which of the following is a bad conductor of electricity ?

Options

A. Tap water
B. Lemon juice
C. Vinegar
D. Sugar solution

Answer

To determine which of the following is a bad conductor of electricity among tab water, lemon juice, vinegar, and sugar solution, we can analyze each option based on their ability to conduct electricity.

### Step-by-Step Solution:

1. **Understand Conductivity**: Conductivity in liquids is primarily due to the presence of ions. Ions are charged particles that can move freely and carry electric current.

2. **Evaluate Tab Water**:
- Tab water usually contains various impurities and dissolved salts, which dissociate into ions when dissolved in water.
- Since it contains ions, tab water can conduct electricity.

3. **Evaluate Lemon Juice**:
- Lemon juice contains citric acid, which also dissociates into ions when mixed with water.
- Therefore, lemon juice can conduct electricity due to the presence of these ions.

4. **Evaluate Vinegar**:
- Vinegar contains acetic acid, which similarly dissociates into ions in solution.
- As a result, vinegar can also conduct electricity.

5. **Evaluate Sugar Solution**:
- When sugar (sucrose) is dissolved in water, it does not dissociate into ions. It remains as whole sugar molecules.
- Since there are no ions present in a sugar solution, it cannot conduct electricity effectively.

6. **Conclusion**:
- Among the options provided, the sugar solution is the only one that does not conduct electricity well. Therefore, it is the bad conductor of electricity.

### Final Answer:
**Sugar solution is a bad conductor of electricity.**