Multiple choice

Which of the following substances is used to store lithium, potassium and sodium metal to prevent their reaction with oxygen, moisture and carbon dioxide of air?

  1. Petrol

  2. Kerosene oil

  3. Mustard oil

  4. Coconut oil

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Highly reactive alkali metals like sodium and potassium react vigorously with moisture and oxygen in the air. Kerosene oil is used to store them because it is non-reactive and prevents contact with air.