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JAMB Chemistry 2004 Question 39

Question 39

Metals and their Compounds

Sodium metal is always kept under oil because it

  1. A.readily reacts with water
  2. B.is reduced by atmospheric nitrogen
  3. C.reacts vigorously on exposure to air
  4. D.reacts with oxygen and carbon(IV)oxide
Show the answer and explanation

Answer: C (reacts vigorously on exposure to air)

Explanation

Sodium reacts rapidly with oxygen and moisture in air, so it is stored under paraffin oil to keep air away.