Which of the Following Statements About the Corrosion of Iron

question 44

Multiple Choice

Which of the following statements about the corrosion of iron and aluminum is correct?

• A)Aluminum reacts with oxygen to form an Al₂O₃ coating, which can flake off easily and allow more aluminum to undergo corrosion.
• B)Iron reacts with oxygen to form an Fe₂O₃ coating, which can flake off easily and allow more iron to undergo corrosion.
• C)Both aluminum and iron react with oxygen to form oxides which are hard and protect the metal from corrosion.
• D)Aluminum corrodes more rapidly than iron does because it is lighter.