Steel is the most commonly used metallic material. However, its annual loss due to corrosion is huge. Preventing metal corrosion
is a big issue in scientific research. The wrong description about metal corrosion below is A. Steel corrodes more easily in humid air than in dry air B. Steel corrosion in reality is the chemical change that takes place when steel reacts with the oxygen and water vapour in air. C. Aluminium is more active than the iron in steel. Therefore its ability to resist corrosion is weaker than steel. D. Painting on the surface of steel can prevent corrosion of the steel.
