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JAMB Chemistry 2011 Question 26

Question 26

Metals and their Compounds

The condition required for corrosion to take place is the presence of

  1. A.water and carbon (IV) oxide
  2. B.water, carbon (IV) oxide and oxygen
  3. C.oxygen and carbon (IV) oxide
  4. D.water and oxygen
Show the answer and explanation

Answer: D (water and oxygen)

Explanation

Iron rusts only when both water and oxygen are present.