. ...... solution does not conduct electricity.

Options

A. Sodium hydroxide
B. Calcium hydroxide
C. Glucose
D. Hydrochloric acid

Explanation

To determine which solution does not conduct electricity, we need to analyze the four options provided: Sodium Hydroxide (NaOH), Calcium Hydroxide (Ca(OH)₂), Glucose (C₆H₁₂O₆), and Hydrochloric Acid (HCl).

### Step 1: Understand the nature of each compound
- **Sodium Hydroxide (NaOH)**: This is a strong base and dissociates completely in water to form Na⁺ and OH⁻ ions. Since it produces ions, it can conduct electricity.

- **Calcium Hydroxide (Ca(OH)₂)**: This is also a strong base. It dissociates in water to form Ca²⁺ and OH⁻ ions. Similar to NaOH, it can conduct electricity due to the presence of these ions.

- **Glucose (C₆H₁₂O₆)**: This is a simple sugar and an organic compound. It does not dissociate into ions when dissolved in water. As a result, it does not have free ions to carry an electric current, making it a poor conductor of electricity.

- **Hydrochloric Acid (HCl)**: This is a strong acid that dissociates completely in water to form H⁺ and Cl⁻ ions. Like the bases, it can conduct electricity due to the presence of these ions.

### Step 2: Identify the non-conducting solution
From the analysis:
- NaOH and Ca(OH)₂ are both bases that conduct electricity.
- HCl is an acid that conducts electricity.
- Glucose does not dissociate into ions and therefore does not conduct electricity.

### Conclusion
The solution that does not conduct electricity is **Glucose (C₆H₁₂O₆)**.

### Final Answer
**Glucose (C₆H₁₂O₆)** does not conduct electricity.

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