Multiple choice

Why is sodium metal stored under kerosene?

  1. To prevent its reaction with oxygen

  2. To liberate hydrogen

  3. To prevent its reaction with nitrogen

  4. Because its density is higher than water

  5. To prevent its reaction with hydrogen
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A Correct answer
Explanation

Sodium metal reacts with oxygen at room temperature to form sodium oxide. Sodium also reacts violently with water. It is so active that it is normally stored under a liquid with which it does not react. Kerosene or naphtha liquids are commonly used for this purpose. Hence, sodium is stored under kerosene to prevent its reaction with oxygen, moisture and carbon dioxide.

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