In which of the following will the bulb glow?

Options

A.
B.
C.
D.

Explanation

To determine in which of the following solutions the bulb will glow, we need to understand the concept of electrical conductivity in solutions. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Identify the Solutions**: We have four solutions to consider:
- Aqueous solution of sodium chloride (NaCl)
- Aqueous solution of sugar
- Distilled water
- Aqueous solution of another ionic compound (not specified)

2. **Understand Conductivity**: A solution will conduct electricity if it contains ions that can move freely. This is typically the case for ionic compounds when dissolved in water.

3. **Analyze Each Solution**:
- **Sodium Chloride (NaCl)**: When NaCl is dissolved in water, it dissociates into Na⁺ and Cl⁻ ions, which can carry electric current. Therefore, the bulb will glow in this solution.
- **Sugar Solution**: Sugar (sucrose) does not dissociate into ions when dissolved in water; it remains as neutral molecules. Hence, it does not conduct electricity, and the bulb will not glow.
- **Distilled Water**: Distilled water is pure and does not contain ions. Therefore, it does not conduct electricity, and the bulb will not glow.
- **Other Ionic Compound**: If the other solution is an ionic compound (not specified), it would likely conduct electricity and cause the bulb to glow, but we cannot confirm without knowing the specific compound.

4. **Conclusion**: The bulb will glow in the sodium chloride solution because it is a conducting solution due to the presence of ions. The bulb will not glow in the sugar solution or distilled water.

### Final Answer:
The bulb will glow in the sodium chloride solution.