Potassium is kept in

Options

A. Under cold water
B. In Ammonia
C. In Alcohol
D. In Kerosene

Answer

**Step-by-Step Solution:**

1. **Understanding the Reactivity of Potassium:**
- Potassium is an alkali metal and is highly reactive, especially with water. When potassium comes into contact with water, it reacts vigorously, producing potassium hydroxide and hydrogen gas, which can ignite due to the heat of the reaction.

2. **Identifying the Need for Storage:**
- Due to its high reactivity, potassium cannot be stored in air or in water. It must be kept in a medium that prevents it from reacting with moisture or oxygen.

3. **Evaluating Storage Options:**
- Common storage options for reactive metals include oil, inert gases, or vacuum-sealed containers. Kerosene oil is often used for storing alkali metals.

4. **Choosing the Correct Storage Medium:**
- Kerosene oil is a suitable choice because it does not react with potassium and provides a barrier against moisture and air, preventing any unwanted reactions.

5. **Conclusion:**
- Therefore, potassium is kept in kerosene oil to ensure its stability and prevent reactions that could lead to fire or explosion.

**Final Answer:**
Potassium is kept in kerosene oil.

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