**Answer:**

The compound that does not conduct electricity in solution is **starch**.

**Explanation:**

Starch, vinegar, table salt, and baking soda are all compounds that can be dissolved in water to form solutions. However, not all of these compounds conduct electricity when they are in solution.

1. **Starch:** Starch is a complex carbohydrate and is composed of long chains of glucose molecules. These long chains do not contain any charged particles, such as ions or free electrons, which are necessary for the conduction of electricity. Therefore, starch does not conduct electricity in solution.

2. **Vinegar:** Vinegar is a solution of acetic acid in water. Acetic acid is a weak electrolyte, meaning it partially dissociates into ions when dissolved in water. These ions are responsible for the conduction of electricity. Therefore, vinegar can conduct electricity in solution.

3. **Table Salt:** Table salt, or sodium chloride (NaCl), is an ionic compound. When dissolved in water, it dissociates completely into sodium ions (Na+) and chloride ions (Cl-). These ions are free to move and carry electric charge, allowing table salt to conduct electricity in solution.

4. **Baking Soda:** Baking soda, or sodium bicarbonate (NaHCO3), is also an ionic compound. When dissolved in water, it dissociates into sodium ions (Na+) and bicarbonate ions (HCO3-). These ions are capable of conducting electricity, making baking soda a conductor in solution.

In summary, starch does not conduct electricity in solution because it does not contain any charged particles. On the other hand, vinegar, table salt, and baking soda can all conduct electricity in solution due to the presence of ions.

Starch... Carbon-Carbon bond hai na Isliye